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Objects sol

Body

Image

Mean radius (km)

Mean radius (R⊕)

Volume (109 km3)

Volume (V⊕)

Mass ×1021 kg
(Yg)

Mass (M⊕)

Density [note 1] g/cm3

Surface gravity
(m/s2)

Surface gravity
()

Type of object

Shape

Sun

[1]

696000[9]

109

1,412,000,000

1,304,000

1,989,000,000

333,000

1.409

274.0

28.02

Star

regular

Jupiter

[2]

69911±6

10.97

1,431,280

1,321

1,898,600

317.83

1.33

24.79

2.535

Planet (gas giant)

regular

Saturn

[3]

58232±6
(w/o rings)

9.14

827,130

764

568,460

95.159

0.70

10.445

1.06

Planet (gas giant)

regular

Uranus

[4]

25362±7

3.98

68,340

63.1

86,832

14.536

1.30

8.87

0.90

Planet (gas giant)

regular

Neptune

[5]

24622±19

3.86

62,540

57.7

102,430

17.147

1.76

11.15

1.140

Planet (gas giant)

regular

Earth

[6]

6371

1

1,083.21

1

5,973.6

1

5.515

9.78033

0.99732

Planet (terrestrial)

regular

Venus

[7]

6052±1
(w/o gas)

0.950

928.43

0.857

4,868.5

0.815

5.24

8.872

0.905

Planet (terrestrial)

regular

Mars

[8]

3389.5±0.2

0.532

163.18

0.151

641.85

0.107

3.94

3.7

0.38

Planet (terrestrial)

regular

Ganymede† Jupiter III

[9]

2634.1±0.3

0.413

76.30

0.0704

148.2

0.0248

1.936

1.428

0.15

Satellite of Jupiter

regular

Titan† Saturn VI

[10]

2576±2
(w/o gas)

0.404

71.52

0.0660

134.5

0.0225

1.88

1.354

0.14

Satellite of Saturn

regular

Mercury

[11]

2440±1

0.383

60.83

0.0562

330.2

0.0553

5.43

3.7

0.38

Planet (terrestrial)

regular

Callisto† Jupiter IV

[12]

2410±2

0.378

58.65

0.0541

107.6

0.018

1.83

1.23603

0.126

Satellite of Jupiter

regular

Io† Jupiter I

[13]

1821.6±0.5

0.286

25.32

0.0234

89.3

0.015

3.528

1.797

0.183

Satellite of Jupiter

regular

Moon Earth I

[14]

1737.1

0.273

21.958

0.0203

73.5

0.0123

3.3464

1.625

0.166

Satellite of Earth

regular

Europa† Jupiter II

[15]

1560.8±0.5

0.245

15.93

0.0147

48

0.00803

3.01

1.316

0.134

Satellite of Jupiter

regular

Triton† Neptune I

[16]

1353.4±0.9

0.212

10.38

0.0096

21.5

0.00359

2.061

0.782

0.0797

Satellite of Neptune

regular

PlutoR 134340

[17]

1184±10[10]

0.185

7

0.0066

13.105

0.0022

2.0

0.61

0.062

Dwarf planetKBO

regular

ErisR 136199

[18]

1163±6[11]

0.182

7

0.007

16.7[12]

0.0027

2.5

0.662

0.0677

Dwarf planetSDObinary

regular

Titania‡ Uranus III

[19]

788.4±0.6

0.124

2.06

0.0019

3.526

0.00059

1.72

0.378

0.0385

Satellite of Uranus

regular

Rhea‡ Saturn V

[20]

764±1

0.12

1.87

0.0017

2.3166

0.00039

1.23

0.26

0.027

Satellite of Saturn

regular

Oberon† Uranus IV

[21]

761±3

0.12

1.85

0.0017

3.014

0.0005

1.63

0.347

0.035

Satellite of Uranus

regular

Iapetus† Saturn VIII

[22]

735±3

0.113

1.55

0.0014

1.9739

0.00033

1.08

0.223

0.0227

Satellite of Saturn

regular

MakemakeRA 136472

[23]

715±7

1.7

3

0.00067

1.7[13]

0.4

Dwarf planetKBO

regular

HaumeaR 136108

ca. 715[14]

0.117

1.3–1.6

0.001

4.006

0.00069

2.55[15]

0.44

0.045

Dwarf planetKBOtrinary

regular (scaleneellipsoid)

2007 OR10 225088

640±100[16]

0.1

1.0981

0.00101

SDO

unknown

Charon† Pluto I

[24]

604±2

0.095

0.87

0.0008

1.52

0.00025

1.65

0.279

0.028

Satellite of Pluto

regular

Umbriel† Uranus II

[25]

585±3

0.092

0.84

0.0008

1.2

0.00020

1.4

0.234

0.024

Satellite of Uranus

regular

Ariel ‡ Uranus I

[26]

578.9±0.6

0.091

0.81

0.0008

1.35

0.00022

1.67

0.269

0.027

Satellite of Uranus

regular

Dione† Saturn IV

[27]

561.4±0.4

0.088

0.73

0.0007

1.096

0.000183

1.48

0.232

0.0236

Satellite of Saturn

regular

Quaoar 50000

[28]

555±3

1.6[17]

0.0003

2.0[18]

0.125

KBOcubewanobinary

unknown

Tethys‡ Saturn III

[29]

531.1±0.6

0.083

0.624

0.0006

0.6173

0.000103

0.984[19]

0.145

0.015

Satellite of Saturn

regular

SednaRA 90377

[30]

500±80

0.08

TNOdetached object[20]

unknown

Ceres‡ 1

[31]

476.2[21]

0.076

0.437

0.0004

0.95

0.000159

2.08

0.27

0.0275

Dwarf planetasteroid

regular

2002 MS4 307261

470±30

0.07

KBO[20]

unknown

OrcusRA 90482

[32]

460±10

0.06

0.23

0.0002

2.47[22]

KBOplutinobinary

unknown

Salacia 120347

430±20

0.07

0.45

1.16[23]

0.147

KBObinary

unknown

Objects between ≈400 and ≈200 km in radius[edit]Edit

Most objects in this size range are expected to be round. All the satellites except Proteus are round. The asteroid 10 Hygiea is not, and 2 Pallasand 4 Vesta are borderline. Like the satellites, TNOs in this size range are expected to be round (assuming the estimated size is correct).

Body

Image

Mean radius (km)

Mean radius (R⊕)

Volume (109km3)

Volume (V⊕)

Mass ×1021 kg
(Yg)

Mass (M⊕)

Density g/cm3

Surface gravity
(m/s2)

Surface gravity
(⊕)

Type of object

Shape

2002 AW197R 55565

[33]

380±20

0.06

0.207

0.00019

0.414P

0.000069

0.206

0.0211

KBO[20]

unknown

Varuna* 20000

250-500

0.049

0.125

0.000115

0.37

6.2E-5

0.992[15]

0.258

0.028

KBO

unknown

2003 AZ84R 208996

360±30

0.06

KBOPlutinobinary

unknown

2004 GV9R 90568

340±40

0.0531

0.162

0.00015

0.325P

0.0000534

0.19

0.0194

KBO

unknown

Varda9 174567

350±40

0.06

0.22

0.0002

0.616P

0.0001

0.228

0.02

KBObinary

unknown

2005 UQ5139 202421

250±40

0.06

0.22

0.0002

0.886P

0.0001

0.278

0.0284

KBOCubewano

unknown

Dysnomia Eris I

340±30

Satellite of Eris

unknown

2005 RN439 145452

340±40

0.0573

0.2036

0.00019

0.407P

0.000068

0.205

0.02096

KBO[20]

unknown

2002 UX25R 55637

[34]

350±10

0.82[24]

KBObinary

unknown

IxionRA 28978

320±120

KBOPlutino

unknown

2006 QH1819

200–500

0.06

0.233

0.000215

0.467P

0.00008

0.214

0.022

SDO

unknown

2007 JJ43 278361

ca. 300

TNO[20]

unknown

Chaos 19521

300±70

0.0585

0.216

0.0002

0.4328P

0.00007

0.209

0.021

KBOCubewano

unknown

2007 UK1269 229762

300±40

SDO

unknown

2010 KZ39

200–500

TNODetached object[25] orCubewano[26]

unknown

2004 XA192 230965

170±60

0.055

0.177

0.00016

0.354P

0.000059

0.195

0.02

TNO[20]

unknown

2010 RF43

ca. 300

SDO

unknown

2002 TC302 84522

290±50

2:5 resonance

unknown

2005 RM439 145451

ca. 300

0.0455

0.102

0.00009

0.2P

0.000034

0.159

0.016

KBO

unknown

2004 XR190

200–400

0.059

0.221

0.0002

0.4416P

0.00007

0.21

0.0215

SDO[20]

unknown

2004 NT33

210±40

0.043

0.089

0.000082

0.178P

0.000029

0.155

0.0158

KBOCubewano[20]

unknown

2001 UR1639 42301

ca. 300

0.05

0.134

0.00012

0.269P

0.000045

0.178

0.018

SDO[20]

unknown

2003 UZ4139

200–400

0.048

0.116

0.00012

0.33P

0.000055

0.241

0.0246

KBOPlutino

unknown

2004 TY364* 120348

ca. 300[citation needed]

0.043

0.089

0.000082

0.178P

0.000029

0.155

0.0158

KBO[20]

unknown

2010 VK201

ca. 300[citation needed]

Cubewano[20]

unknown

2008 ST291

200–400

SDO

unknown

2010 RE64

200–400

KBO

unknown

2010 FX86

120–300

KBOCubewano

unknown

2002 XV93

280±10

KBOPlutino[20]

unknown

Pallas$ 2

[35]

270±10

0.211

0.0000353

2.8[27]

0.19

0.02

Asteroid

irregular

Vesta$ 4

[36]

262.7±0.1[28]

0.259076

3.456[28]

0.252

Asteroid

regular?

2003 VS2 84922

[37]

260±20

KBOPlutino[20]

unknown

2012 VP113

225–330

TNODetached object

unknown

2003 QX113

ca. 250

0.036

0.051

0.00005

0.102P

0.000017

0.129

0.013

SDO[20]

unknown

Enceladus‡ Saturn II

[38]

252.1±0.2

0.039

0.067

0.00006

0.108

0.0000181

1.61

0.111

0.0113

Satellite of Saturn

regular

2004 PF115 175113

200±50

KBOPlutino

unknown

2010 TY53

unknown

TNO — centaur[20]

unknown

2011 GM27

unknown

SDO

unknown

2006 HH123

unknown

0.031

0.0335

0.000011

0.067P

0.000011

0.112

0.011

Centaur[20]

unknown

2010 TJ

unknown

SDO[20]

unknown

2010 VZ98

unknown

SDO[20]

unknown

2011 FW62

unknown

Classical

unknown

Miranda‡ Uranus V

[39]

235.8±0.7

0.037

0.055

0.00005

0.0659

0.000011

1.20

0.0791

0.00806

Satellite of Uranus

regular

2010 EK139

240±70

SDO

unknown

2005 TB190 145480

230±30

TNODetached object[20]

unknown

1999 DE9 26375

230±20

0.036

0.051

0.000047

0.1026P

0.000017

0.129

0.013

KBO

unknown

2003 FY128 120132

230±10

SDO[20]

unknown

1998 SN165* 35671

200±20

0.036

0.05

0.000046

0.1P

0.000017

0.128

0.013

KBO

unknown

2002 KX149 119951

unknown

KBO

unknown

2000 YW134* 82075

ca. 200

0.039

0.065

0.00006

0.13P

0.000022

0.139

0.014

SDO[20]

unknown

2002 VR128 84719

[40]

220±20

KBOPlutino[20]

unknown

2002 WC19 119979

unknown

0.0315

0.034

0.00003

0.0675P

0.000011

0.113

0.0115

KBObinary

unknown

HuyaR 38628

229±5

KBOPlutino

unknown

10 Hygiea$

215±4

Asteroid

irregular

1999 CD158

ca. 210

0.0345

0.0446

0.00004

0.089P

0.000014

0.123

0.0126

KBO

unknown

Proteus ‡A Neptune VIII (8)

[41]

210±7

0.033

0.038

0.000035

0.050

0.00000844

1.3[29]

0.0666

0.00678

Satellite of Neptune

irregular

2005 QU1829 303775

210±40

SDO[20]

unknown

2001 QF298

200±20

KBOPlutino[20]

unknown

1996 GQ21* 26181

ca. 200

0.031

0.0335

0.000011

0.067P

0.000011

0.112

0.011

SDO[20]

unknown

Selected objects between 200 and 100 km in radius[edit]Edit

Satellites of Saturn

Satellites of Neptune

Objects between 200 and 100 km in radius (400 and 200 km in diameter). The largest of these may lie above the boundary for hydrostatic equilibrium, but most are irregular. Most of the trans-Neptunian objects listed with a radius smaller than 200 km have "assumed sizes based on a generic albedo of 0.09" since they are too far away to directly measure their sizes with existing instruments. Values relative to Earth are not included beyond this point. Mass switches from 1021 kg to 1018 kg (Zg). Main-belt asteroids have orbital elements constrained by (2.0 AU < a < 3.2 AU; q > 1.666 AU) according to JPL Solar System Dynamics (JPLSSD).[30] This is not complete, missing many poorly known TNOs.[20]


Body

Image

Mean radius (km)

Mass ×1018 kg
(Zg)

Type of object

Shape

Mimas‡ Saturn I

[42]

198.2±0.4

37.49

Satellite of Saturn

regular (smallest known body in currentHE)

Hiʻiaka Haumea I

ca. 200

20

Satellite of Haumea

irregular

Vanth Orcus I

perhaps140±10

Satellite of Orcus

irregular

Interamnia M 704

163±1

37

Main-belt asteroidF-type

irregular

Nereid A Neptune II

[43]

170±30

31

Satellite of Neptune

irregular

Altjira 9 148780

60–100

Trans-Neptunian objectcubewano

irregular

Davida$ 511

145±10

43.8

Main-belt asteroidC-type

irregular

Actaea Salacia I

140±10

Satellite of 120347 Salacia

irregular

Europa$ 52

[44]

158±4

16.5

Main-belt asteroidC-type

irregular[31]

Eunomia$ 15

134±7

31.2

Main-belt asteroidS-type

irregular[31]

Sylvia$ 87

[45]

143±5

14.78

Outer main-belt asteroidX-typetrinary

irregular[31]

Cybele$ 65

136±6

17.8

Outer main-belt asteroidC-type

irregular

Juno$ 3

[46]

135.7[32]

26.7

Main-belt asteroidS-type

irregular[31]

Hyperion Saturn VII

[47]

135±4

5.58

Satellite of Saturn

irregular

Camilla$ 107

129±7

11.2

Outer main-belt asteroidC-typebinary

irregular[33]

EuphrosyneM 31

128±3

6.23

Main-belt asteroidC-type

irregular

Chariklo 10199

124±9

Centaur

irregular

S/2007 (148780) 1 Altjira I

50–90

Secondary of 148780 Altjira

irregular

Sila9 79360

perhaps120±50

11

Kuiper belt objectbinary (Nunam)

irregular

BambergaM 324

117±4

10

Main-belt asteroidC-type

Thisbe $ 88

113±6

10.5 M

Main-belt asteroidB-type

irregular[33]

Nunam 79360

perhaps110±50

Satellite of Sila

irregular

Patientia 451

117±5

Main-belt asteroid

irregular

Fortuna $ 19

104±6

12.7

Main-belt asteroidG-type

irregular

Herculina 532

111±2

Main-belt asteroidS-type

irregular[31]

Doris 48

111±4

17A

Main-belt asteroid

irregular

Chiron*A 2060 95P/Chiron

116±7

10

Centaur

irregular

Ursula 375

[48]

96±2

Main-belt asteroid

irregular

Phoebe $ Saturn IX

[49]

106.5±0.7

8.29±0.01

Satellite of Saturn

formerly
regular[34]

Amphitrite$ 29

106±3

11.8

Main-belt asteroidS-type

irregular[31]

Deucalion 53311

ca. 105

Trans-Neptunian objectcubewano

irregular

Themis M 24

100±10

11.3

Main-belt asteroidC-typeThemis

DiotimaA 423

104±3

16

Main-belt asteroidC-type

irregular[35]

EgeriaM 13

104±4

16.3

Main-belt asteroidG-type

irregular

Bienor 54598

105±15

Centaur

irregular

Aurora 94

102±2

Main-belt asteroid

irregular[36]

HektorA 624

[50]

113±8

14

AsteroidJupiter Trojanbinary

irregular

Rhadamanthus 38083

40–140

Kuiper belt object

irregular

Selected objects between 100 and 50 km in radius[edit]Edit

Satellites of Jupiter

Satellites of Saturn

Satellites of Uranus

Satellites of Neptune

Objects 100 and 50 km in radius (200 km to 100 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the gas giants in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following reference.[20Asteroid spectral types are mostly Tholen, but some might be SMASS.


Body

Image

Mean radius (km)

Mass ×1018 kg
(Zg)

Type of object/Notes

7 Iris$

[51]

100±5

13.6

Main-belt asteroidS-type

702 Alauda

[52]

97±2

6.05

Main-belt asteroidC-typebinary

LarissaA Neptune VII (7)

[53]

97±3

4.2

Satellite of Neptune

121 HermioneM

[54]

95 km[37]

5.38

Outer main-belt asteroidC-typebinary

41 Daphne

[55]

100±5

Main-belt asteroid

372 Palma

96±2

Main-belt asteroid

9 Metis$

95 ± ??

11.3

Main-belt asteroid

128 Nemesis

92±3

7

Main-belt asteroidC-type

16 Psyche$

127±2

21.9

Main-belt asteroidM-type

6 Hebe $

93 ± ??

12.8

Main-belt asteroidS-type

5145 Pholus

92±8

6.6

Centaur

154 Bertha

93±1

Main-belt asteroidC-type

76 Freia

92±2

6.5

Outer main-belt asteroidCybele

130 ElektraM

91±6

6.6

AsteroidG-typebinary

Janus$ Saturn X (10)

[56]

89.5±1.4

1.912

Satellite of Saturn

259 Aletheia

95±3

5.97

Main-belt asteroid

Galatea Neptune VI (6)

[57]

88±4

2.12

Satellite of Neptune

88611 Teharonhiawako

80 ± ??

Trans-Neptunian objectcubewanobinary

42355 Typhon

81±4

Trans-Neptunian objectbinary

120 Lachesis

87 ± ??

5.5

Main-belt asteroid

65489 Ceto

112±10

5.4[38]

CentaurTNObinary

747 Winchester

85±3

Asteroid

153 Hilda

85 ± ??

5.2

Main-belt asteroidHildas

Himalia M Jupiter VI (6)

[58]

85 ± ??

4.19 [39]

Satellite of JupiterHimalia group

Namaka Haumea II

assumed ca. 85

2

Satellite of Haumea

Puck Uranus XV (15)

[59]

81±2[40]

2.9A

Satellite of Uranus

96 Aegle

84 ± 3

5.1

Main-belt asteroid

241 Germania

89 ± 4

5.05

Main-belt asteroidC-type

194 Prokne

85 ± 3

5

Main-belt asteroidC-type

566 Stereoskopia

84[41]

Outer main-belt asteroidCybele

Amalthea Jupiter V (5)

[60]

84±2

2.08 ± 0.15

Satellite of Jupiter$

911 Agamemnon

83 ± ??

AsteroidJupiter Trojan

22 Kalliope

90 ± 2

8.09M

Main-belt asteroidM-typebinary

66652 Borasisi

70–90?[citation needed]

Trans-Neptunian objectcubewanobinary

386 Siegena

85 ± 4

Main-belt asteroidC-type

59 Elpis

82 ± 3

Main-belt asteroid

1437 Diomedes

82 ± 2

4.6

AsteroidJupiter Trojan

444 GyptisM

82 ± 5

12.5

Main-belt asteroidC-type

409 Aspasia

88 ± 2

4.42

Main-belt asteroidC-type

20461 Dioretsa

unknown

Centaur[42]—Damocloid

209 Dido

70 ± 5

4.28

Main-belt asteroidC-type

334 Chicago

84 ± 4

Main-belt asteroidC-type

804 Hispania

74 ± 2

9.95

Main-belt asteroidP-type

185 Eunike

80 ± 3

4.09

Main-belt asteroid

EugeniaM 45

107 ± 2

5.69

Main-belt asteroidF-typetrinary(irregular)[31]

139 Juewa

81 ± 4

4

Main-belt asteroid

85 Io

80 ± ??

3.4

Main-belt asteroid

165 Loreley

82 ± 4

3.91

Main-belt asteroidC-type

790 Pretoria

80.49[43]

Outer main-belt asteroidCybele

173 Ino

80 ± 3

Main-belt asteroidC-type

354 Eleonora

77 ± 3

Main-belt asteroidS-type

39 Laetitia

76.9[43]

3.5

Asteroid

14 Irene

76 ± ??

8.2

Main-belt asteroid

89 Julia

74 ± 4

3.6

Main-belt asteroidS-type

536 Merapi

76 ± 2

Main-belt asteroid

776 Berbericia

76 ± 2

Main-belt asteroid

145 Adeona

75 ± 3

3.6

Main-belt asteroidAdena

150 Nuwa

73 ± 5

3.62

Main-belt asteroidC-type

DespinaA Neptune V (5)

[61]

75±3

2.1

Satellite of Neptune

Sycorax Uranus XVII (17)

75 (assumed)

2.3

Satellite of Uranus

49 Pales M

74.9[44]

2.69

Main-belt asteroidC-type

117 Lomia

ca. 70

3.4

Main-belt asteroidC-type

238 Hypatia

ca. 70

Main-belt asteroidC-type

168 Sibylla

ca. 70

3.42

Main-belt asteroidC-type

283 EmmaM

ca. 70

1.38

Asteroidbinary

51 Nemausa

ca. 70

Asteroid

106 Dione

ca. 70

Main-belt asteroidG-type

137 Meliboea

ca. 70

3.2

Main-belt asteroid

20 Massalia$

ca. 70

5.67

Asteroid

211 Isolda

ca. 70

3.07

Main-belt asteroidC-type

1172 Äneas

ca. 70

AsteroidJupiter Trojan

144 Vibilia

ca. 70

3

Main-belt asteroid

508 Princetonia

ca. 70

Main-belt asteroid

895 Helio

ca. 70

Main-belt asteroidB-type

361 Bononia

ca. 70

Main-belt asteroidD-type

420 Bertholda

ca. 70

Main-belt asteroidP-type

93 Minerva

ca. 70

2.9

Main-belt asteroidC-typetrinary

617 Patroclus

ca. 70

AsteroidJupiter Trojanbinary

308 Polyxo

ca. 70

Main-belt asteroidT-type

18 Melpomene

ca. 70

3

Main-belt asteroid

268 Adorea

ca. 70

Main-belt asteroid

349 Dembowska

ca. 70

Main-belt asteroidR-type

489 Comacina

ca. 70

Main-belt asteroid

69 Hesperia

ca. 70

2.76

Main-belt asteroidM-type

54 Alexandra

ca. 70

Main-belt asteroid

762 Pulcova

ca. 70

Main-belt asteroidC-typebinary

Pabu Borasisi I

ca. 70

Secondary of 66652 Borasisi

196 Philomela

ca. 70

Main-belt asteroidS-type

212 Medea

ca. 70

2.64[45]

Main-belt asteroid

95 Arethusa

ca. 70

2.6

Main-belt asteroid

Portia Uranus XII (12)

68±4

1.7

Satellite of Uranus

588 Achilles

ca. 70

AsteroidJupiter Trojan

690 Wratislavia

[62]

ca. 70

Asteroid

111 Ate

ca. 70

Main-belt asteroidC-type

247 Eukrate

ca. 70

Main-belt asteroidC-type

705 Erminia

ca. 70

Main-belt asteroid

471 Papagena

ca. 70

Main-belt asteroidC-type

Phorcys Ceto I

86±5

1.67[38]

Satellite of 65489 Ceto

147 Protogeneia

ca. 70

2.5

Main-belt asteroid

Menoetius Patroclus I

ca. 70

Secondary of 617 Patroclus

344 Desiderata

ca. 70

Main-belt asteroidC-type

146 Lucina

ca. 70

2.4

Main-belt asteroid

141 Lumen

ca. 70

1.6

Main-belt asteroidC-type

356 Liguria

ca. 70

Main-belt asteroid

11 Parthenope

ca. 70

6.15M

Main-belt asteroid

187 Lamberta

ca. 70

2.37

Main-belt asteroidC-type

419 Aurelia

ca. 60

Main-belt asteroidF-type

200 Dynamene

ca. 60

Main-belt asteroid

8 Flora

[63]

ca. 60

8.47

Main-belt asteroidS-typeFlora

712 Boliviana

ca. 60

Main-belt asteroidX-type

654 Zelinda

ca. 60

Main-belt asteroid

426 Hippo

ca. 60

Main-belt asteroid

47 Aglaja

pic

ca. 60

Main-belt asteroidC-type

279 Thule

ca. 60

Main-belt asteroidD-type

92 Undina

ca. 60

2.1

Main-belt asteroidM-type

1173 Anchises

ca. 60

AsteroidJupiter Trojan

1143 Odysseus

ca. 60

AsteroidJupiter Trojan (L4)

469 Argentina

ca. 60

Main-belt asteroidCybele

159 Aemilia

ca. 60

1.4

Asteroid

405 Thia

ca. 60

Main-belt asteroidC-type

602 Marianna

ca. 60

Main-belt asteroid

46 Hestia

ca. 60

3.5[46]–21[47]

Main-belt asteroid

216 Kleopatra

[64]

ca. 60

Main-belt asteroidM-typetrinary

104 Klymene

ca. 60

2

Main-belt asteroid

410 Chloris

ca. 60

Main-belt asteroidC-type

134 Sophrosyne

ca. 60

2

Main-belt asteroid

328 Gudrun

ca. 60

1.94

Main-belt asteroidS-type

1867 Deiphobus

ca. 60

AsteroidJupiter Trojan

68 Leto

ca. 60

Main-belt asteroidS-type

70 Panopaea

ca. 60

Main-belt asteroidC-type

Sawiskera Teharonhiawako I

ca. 60

Secondary of 88611 Teharonhiawako

127 Johanna

ca. 60

Main-belt asteroid

276 Adelheid

ca. 60

Main-belt asteroid

176 Iduna

ca. 60

Main-belt asteroidG-type

156 Xanthippe

ca. 60

Main-belt asteroidS-type

28 Bellona

ca. 60

Main-belt asteroidC-type

86 Semele

ca. 60

Main-belt asteroidC-type

78 Diana

ca. 60

Main-belt asteroidC-type

381 Myrrha

ca. 60

Main-belt asteroidC-type

225 Henrietta

ca. 60

1.83

Main-belt asteroidC-typeCybele

618 Elfriede

ca. 60

Main-belt asteroidC-type

105 Artemis

ca. 60

1.8

Main-belt asteroidC-type

81 Terpsichore

ca. 60

Main-belt asteroidC-type

5 Astraea

ca. 60

2.9

Main-belt asteroid

74 Galatea

ca. 60

1.8

Main-belt asteroidC-type

350 Ornamenta

ca. 60

Main-belt asteroidC-type

772 Tanete

ca. 60

Main-belt asteroidC-type

476 Hedwig

ca. 60

Main-belt asteroid

1093 Freda

ca. 60

Main-belt asteroid

171 Ophelia

ca. 60

Main-belt asteroidC-typeThemis

909 Ulla

ca. 60

Asteroid

3317 Paris

ca. 60

AsteroidJupiter Trojan

203 Pompeja

ca. 60

Main-belt asteroid

3063 Makhaon

ca. 60

1.6

AsteroidJupiter Trojan

2006 SQ372 308933

ca. 60

TNO

38 Leda

ca. 60

1.6

Asteroid

360 Carlova

ca. 60

Main-belt asteroid

521 Brixia

ca. 60

Main-belt asteroid

490 Veritas

ca. 60

Main-belt asteroid—Veritas

466 Tisiphone

ca. 60

Main-belt asteroidC-type

53 Kalypso

ca. 60

Asteroid

2241 Alcathous

ca. 60

AsteroidJupiter Trojan

388 Charybdis

ca. 60

Main-belt asteroidC-type

34 Circe

ca. 60

1.5

Main-belt asteroidC-type

Epimetheus Saturn XI (11)

[65]

58±2

0.5304[48]

Satellite of Saturn$

596 Scheila

ca. 60

Main-belt asteroid

56 Melete

ca. 60

1.5

Asteroid

129 Antigone

ca. 60

2

Main-belt asteroid—nickel-iron

12 Victoria

ca. 60

Main-belt asteroidS-type

57 Mnemosyne

ca. 60

Asteroid

545 Messalina

ca. 60

Asteroid

2797 Teucer

ca. 60

AsteroidJupiter Trojan(L4)

2920 Automedon

ca. 60

AsteroidJupiter Trojan(L4)

91 Aegina

ca. 50

1.4

Main-belt asteroidC-type

140 Siwa

ca. 50

1.4

Main-belt asteroid

814 Tauris

ca. 50

Main-belt asteroid

595 Polyxena

ca. 50

Main-belt asteroid

230 Athamantis

ca. 50

Main-belt asteroidS-type

659 Nestor

ca. 50

AsteroidJupiter Trojan

37 Fides

ca. 50

1.3

Main-belt asteroidS-type

514 Armida

ca. 50

Main-belt asteroid

23 Thalia

ca. 50

1.3

Main-belt asteroidS-type

739 Mandeville

ca. 50

Main-belt asteroidX-type

40 Harmonia

ca. 50

1.3

Main-belt asteroidS-type

181 Eucharis

ca. 50

1.2

Main-belt asteroidK-type

346 Hermentaria

ca. 50

Main-belt asteroidS-type

357 Ninina

ca. 50

Main-belt asteroid

506 Marion

ca. 50

Main-belt asteroidC-type

365 Corduba

ca. 50

Main-belt asteroidC-type

36 Atalante

ca. 50

Asteroid

713 Luscinia

ca. 50

Main-belt asteroidC-type

1269 Rollandia

ca. 50

Main-belt asteroid

164 Eva

ca. 50

Main-belt asteroidC-type

98 Ianthe

ca. 50

1.2

Main-belt asteroidC-type

240 Vanadis

ca. 50

Main-belt asteroidC-type

221 Eos

ca. 50

Main-belt asteroidK-type

788 Hohensteina

ca. 50

Main-belt asteroid

791 Ani

ca. 50

Main-belt asteroid

1208 Troilus

ca. 50

AsteroidJupiter Trojan

192 Nausikaa

ca. 50

Main-belt asteroidS-type

63 Ausonia

ca. 50

1.1

Main-belt asteroidS-type

35 Leukothea

ca. 50

1.1

Main-belt asteroidC-type

570 Kythera

ca. 50

Main belt asteroid

233 Asterope

ca. 50

Main belt asteroidT-type

4063 Euforbo

ca. 50

AsteroidJupiter Trojan

1583 Antilochus

ca. 50

AsteroidJupiter Trojan

1390 Abastumani

ca. 50

Main-belt asteroid

522 Helga

ca. 50

Main-belt asteroidCybele

175 Andromache

ca. 50

Main-belt asteroidC-type

191 Kolga

ca. 50

1.08

Main-belt asteroidC-type

663 Gerlinde

ca. 50

Asteroid

626 Notburga

ca. 50

Asteroid

387 Aquitania

ca. 50

Main-belt asteroidS-type

42 Isis

ca. 50

Main-belt asteroidS-type

30 Urania

ca. 50

Main-belt asteroidS-type

Examples of objects between 50 km and 20 km in radius[edit]Edit

There are easily tens of thousands of objects 50 km in radius or smaller[clarification needed], but only a fraction have been explored. The number of digits is not an endorsement of significant figures. The table switches from ×1018 kg to ×1015 kg (Eg), and many of these mass values are assumed. (See also: List of minor planets.)

Satellites of Jupiter

Satellites of Saturn

Satellites of Uranus

Satellites of Neptune

Satellites of Pluto

Body

Image

Mean radius (km)

Mass ×1015 kg
(Eg)

Type of object

50 VirginiaA

ca. 50

1000

Asteroid

114 Kassandra

ca. 50

1000

Main-belt asteroidT-type

1021 Flammario

ca. 50

Asteroid

162 Laurentia

ca. 50

Main-belt asteroid

401 Ottilia

ca. 50

Main-belt asteroid

ThebeA Jupiter XIV (14)

[66]

ca. 50

430

Satellite of Jupiter

148 Gallia

ca. 50

980

Main-belt asteroidR-type

404 Arsinoe

ca. 50

Main-belt asteroidC-type

27 EuterpeA

ca. 50

930

Main-belt asteroidS-type

773 Irmintraud

ca. 50

AsteroidD-type

21 Lutetia

ca. 50

1700 [49]

Main-belt asteroidM-type

62 Erato

ca. 50

910

Main-belt asteroidThemis

26 Proserpina

ca. 45

900

Asteroid

345 Tercidina

ca. 45

Main-belt asteroidC-type

JulietA Uranus XI

ca. 45

560

Satellite of Uranus

58 Concordia

ca. 45

850

Asteroid

229 Adelinda

ca. 45

Main-belt asteroidC-type

379 Huenna

ca. 45

480

Main-belt asteroidC-type

Nix Pluto II

ca. 45

70

Satellite of Pluto

103 Hera

ca. 45

790

Asteroid

17 Thetis

[67]

ca. 45

1200

Asteroid

143 Adria

ca. 45

760

Main-belt asteroid

109 Felicitas

ca. 45

750

Asteroid

100 Hekate

ca. 45

1000

Asteroid

90 Antiope A

ca. 45

410

AsteroidC-typebinary

227 Philosophia

ca. 45

Main-belt asteroid

Prometheus $ Saturn XVI (16)

[68]

ca. 45

156.6

Satellite of Saturn

110 Lydia

ca. 45

670

Asteroid

ElaraA Jupiter VII

ca. 45

870

Satellite of JupiterHimalia group

72 Feronia

ca. 45

670

Asteroid

60558 Echeclus/
174P/Echeclus

ca. 40

Centaur[50]

S/2000 (90) 1

ca. 40

Asteroid moon of 90 Antiope

71 Niobe

ca. 40

610

Asteroid

102 Miriam

ca. 40

Asteroid

97 Klotho

ca. 40

590

Asteroid

61 Danae

ca. 40

Asteroid

ThalassaA Neptune IV

ca. 40

350

Satellite of Neptune

122 Gerda

ca. 40

570

Main-belt asteroidS-type

Pandora$ Saturn XVII (17)

[69]

ca. 40

135.6

Satellite of Saturn

83 Beatrix

ca. 40

560

Main-belt asteroidX-type

32 PomonaA

ca. 40

550

Asteroid

BelindaA Uranus XIV (14)

[70]

ca. 40

360

Satellite of Uranus

115 Thyra

ca. 40

Asteroid

Cressida Uranus IX

ca. 40

340A

Satellite of Uranus

135 Hertha

ca. 40

Asteroid

84 Klio

ca. 40

520

Asteroid

80 Sappho

ca. 40

Asteroid

Echidna Typhon I

44±3

Satellite of 42355 Typhon

1001 Gaussia

ca. 40

Asteroid

58534 Logos

ca. 40

270

Kuiper belt objectcubewanobinary

124 Alkeste

ca. 40

470

Main-belt asteroidS-type

55576 Amycus

ca. 40

Centaur

25 Phocaea

ca. 40

Asteroid

Weywot Quaoar I

ca. 35

Satellite of Quaoar

8405 Asbolus

ca. 35

Centaur

112 Iphigenia

ca. 35

Asteroid

Hydra Pluto III

ca. 35

391P

Satellite of Pluto

Rosalind* Uranus XIII (13)

ca. 35

250

Satellite of Uranus

Caliban Uranus XVI (16)

ca. 35

Satellite of Uranus

99 Dike

ca. 35

390

Asteroid

66 Maja

ca. 35

Asteroid

116 Sirona

ca. 35

Main-belt asteroid

44 Nysa

ca. 35

370

Main-belt asteroidE-type

10370 Hylonome

ca. 35

Centaur

77 Frigga

ca. 35

350

Asteroid

55 Pandora

ca. 35

Asteroid

133 Cyrene

ca. 35

310

Main-belt asteroidS-type

79 Eurynome

ca. 35

Asteroid

Zoe Logos I

ca. 35

Satellite of 58534 Logos

Naiad Neptune III

[71]

ca. 35

190A

Satellite of Neptune

43 Ariadne

ca. 35

Asteroid

101 Helena

ca. 35

300

Asteroid

108 Hecuba

ca. 30

390

Asteroid

DesdemonaA Uranus X

ca. 30

180

Satellite of Uranus

Halimede* Neptune IX

ca. 30

Satellite of Neptune

52975 Cyllarus

ca. 30

Centaur

82 Alkmene

ca. 30

Asteroid

60 Echo

ca. 30

Asteroid

Crantor 83982

ca. 30

Centaur

Comet Hale–Bopp C/1995 O1

[72]

ca. 30

Comet

Pasiphae*A Jupiter VIII

ca. 30

300

Satellite of Jupiter

7066 Nessus

ca. 30

Centaur

Neso Neptune XIII (13)

ca. 30

Satellite of Neptune

64 Angelina

ca. 30

Main-belt asteroidE-type

67 Asia

ca. 30

Asteroid

119 Althaea

ca. 30

200

Main-belt asteroidS-type

75 Eurydike

ca. 30

180

Main-belt asteroidM-type

142 Polana

ca. 30

180

Main-belt asteroidF-type

253 Mathilde$

[73]

26.4

103.3

Main-belt asteroidC-type

52872 Okyrhoe

ca. 25

Centaur

Bianca Uranus VIII

ca. 25

92

Satellite of Uranus

Prospero Uranus XVIII (18)

ca. 25

85

Satellite of Uranus

Setebos Uranus XIX (19)

ca. 25

75

Satellite of Uranus

123 Brunhild

ca. 25

Main-belt asteroid

4348 Poulydamas

ca. 25

AsteroidJupiter Trojan

1000 Piazzia

ca. 25

Main-belt asteroid

113 Amalthea

ca. 25

100

Main-belt asteroid

Carme* Jupiter XI

ca. 25

130

Satellite of JupiterCarme group

138 Tolosa

ca. 25

99

Main-belt asteroidS-type

126 Velleda

ca. 20

94

Main-belt asteroid

73 Klytia

ca. 20

92

Asteroid

Sao Neptune XI (11)

ca. 20

Satellite of Neptune

125 Liberatrix

ca. 20

87

Main-belt asteroidM-type

Metis Jupiter XVI (16)

[74]

ca. 20

36

Satellite of Jupiter

132 Aethra

ca. 20

82

Main-belt asteroidM-type

Ophelia* Uranus VII

ca. 20

53

Satellite of Uranus

Laomedeia Neptune XII (12)

ca. 20

Satellite of Neptune

118 Peitho

ca. 20

76

Main-belt asteroid

208 Lacrimosa

ca. 20

73.9

Main-belt asteroidKoronisS-type

136 Austria

ca. 20

68

Main-belt asteroidM-type

131 Vala

ca. 20

69

Main-belt asteroid

Cordelia* Uranus VI

ca. 20

44

Satellite of Uranus

Siarnaq Saturn XXIX (29)

ca. 20

Satellite of Saturn

Examples of objects between 20 km and 1 km in radius[edit]Edit

Satellites of Mars

Satellites of Jupiter

Satellites of Saturn

Satellites of Uranus

Satellites of Neptune

Satellites of Pluto

Body

Image

Mean
radius (km)

Mass ×1015 kg
(Eg)

Type of object

167 Urda

ca. 20

66.7

Main-belt asteroidKoronisS-type

Hidalgo 944

ca. 20

Centaur

Sinope* Jupiter IX

ca. 20

76

Satellite of Jupiter

Psamathe* Neptune X

ca. 20

37

Satellite of Neptune

29P/Schwassmann–
Wachmann

[75]

ca. 20

Comet — centaur

Lysithea* Jupiter X

ca. 20

63

Satellite of JupiterHimalia group

158 Koronis

ca. 20

Main-belt asteroidKoronisS-type

Helene Saturn XII (12) Dione B

[76]

17.6±0.4 km [51]

25

Satellite of Saturn — Dione trojan

226 Weringia

ca. 15

Main-belt asteroidS-type

433 Eros$

[77]

ca. 15

66.9

Near-Earth asteroidAmor

Stephano Uranus XX (20)

ca. 15

22

Satellite of Uranus

Albiorix Saturn XXVI (26)

ca. 15

Satellite of Saturn

1036 Ganymed

ca. 15

33

Near-Earth asteroid

1815 Beethoven

ca. 15

Main-belt asteroid

243 Ida

[78]

15.7[52]

42

Main-belt asteroidKoronisS-typebinary

Atlas$ Saturn XV (15)

[79]

15.1±0.9 km [51]

66

Satellite of Saturn

31824 Elatus

ca. 15

Centaur

Perdita Uranus XXV (25)

ca. 15

13

Satellite of Uranus

Pan$ Saturn XVIII (18)

[80]

14.1±1.3 km[53]

4.95[54]

Satellite of Saturn

Linus Kalliope I

ca. 15

60[55]

Asteroid moon of 22 Kalliope

Ananke Jupiter XII (12)

ca. 15

38.2

Satellite of Jupiter

Telesto Saturn XIII (13) or Tethys B

[81]

ca. 10

Satellite of SaturnTethys trojan

Phobos$ Mars I

[82]

11.267

10.7

Satellite of Mars

Paaliaq Saturn XX (20)

ca. 10

8.2

Satellite of Saturn

Francisco Uranus XXII (22)

ca. 10

7.2

Satellite of Uranus

Calypso Saturn XIV (14) or Tethys C

[83]

ca. 10

Satellite of SaturnTethys trojan

Leda Jupiter XIII (13)

ca. 10

11

Satellite of JupiterHimalia group

Ferdinand Uranus XXIV (24)

ca. 10

5.4

Satellite of Uranus

Margaret Uranus XXIII (23)

ca. 10

5.4

Satellite of Uranus

149 Medusa

ca. 10

8

Main-belt asteroid

Romulus Sylvia I

ca. 10

4

Asteroid moon of 87 Sylvia

Ymir Saturn XIX (19)

ca. 10

Satellite of Saturn

Trinculo Uranus XXI (21)

ca. 10

3.9

Satellite of Uranus

Cupid Uranus XXVII (27)

ca. 10

3.8

Satellite of Uranus

S/2004 N 1

ca. 10

Satellite of Neptune

2002 Euler

ca. 10

5.5

Asteroid

Adrastea Jupiter XV (15)

[84]

ca. 10

2

Satellite of Jupiter

Kiviuq Saturn XXIV (24)

ca. 10

Satellite of Saturn

2000 Herschel

ca. 10

Main-belt asteroid[56]

Tarvos Saturn XXI (21)

[85]

ca. 10

Satellite of Saturn

S/2006 (624) 1 Hektor I

ca. 10

Asteroid moon of 624 Hektor

2685 Masursky

[86]

ca. 10

5–11

Asteroid

(65407) 2002 RP120

ca. 5

3.1

Damocloid (retrograde) & possible ejected SDO

Bestla Saturn XXXIX (39)

ca. 5

Satellite of Saturn

Kerberos Pluto IV

ca. 10

Satellite of Pluto

Petit-Prince Eugenia I

ca. 5

1.2

Asteroid moon of 45 Eugenia

Deimos$ Mars II

[87]

ca. 5

1.48

Satellite of Mars

951 Gaspra

[88]

6.1 ± 0.4 [57]

2–3

Asteroid

Ijiraq Saturn XXII (22)

ca. 5

Satellite of Saturn

S/2002 (121) 1 Hermione I

ca. 5

1.6

Asteroid moon of 121 Hermione

1P/Halley

[89]

ca. 5

0.03[58]

Comet (75.3 year period)

S/2001 (107) 1 Camilla I

ca. 5

1.5

Asteroid moon of 107 Camilla

Styx Pluto V

ca. 10

Satellite of Pluto

Mab Uranus XXVI (26)

ca. 5

Satellite of Uranus

Erriapus Saturn XXVIII (28)

ca. 5

Satellite of Saturn

26858 Misterrogers

ca. 5

Asteroid

Callirrhoe Jupiter XVII (17)

ca. 5

Satellite of Jupiter

Themisto Jupiter XVIII (18)

ca. 5

0.69

Satellite of Jupiter

Daphnis Saturn XXXV (35)

[90]

3.9±0.8

0.084[54]

Satellite of Saturn

Remus Sylvia II

ca. 5

0.2

Asteroid moon of 87 Sylvia

S/2003 (379) 1 Huenna I

ca. 5

Asteroid moon of 379 Huenna

9P/Tempel

[91]

2.8[59]

0.075

Comet

S/2003 (130) 1 Elektra I

ca. 5

0.4

Asteroid moon of 130 Elektra

S/2004 (45) 1 Eugenia II

ca. 5

Asteroid moon of 45 Eugenia

118401 LINEAR

ca. 5

0.23

Main-belt comet

4179 Toutatis

[92]

ca. 5

0.05

Near-Earth asteroid

2867 Šteins

[93]

2.65 km[60]

AsteroidE-type

3200 Phaethon

ca. 5

0.14

AsteroidApolloB-type

3753 Cruithne

< 5

.13

Asteroid & quasi-satellite of Earth

5535 Annefrank

[94]

< 5

Asteroid

19P/Borrelly

[95]

2.4[61]

Comet (6.85 year period) (Jupiter family)

2P/Encke

[96]

< 5

Comet (3.3 year period)

C/1996 B2 Comet Hyakutake

[97]

< 5

Comet[62]

81P/Wild Wild 2

[98]

< 5

Comet

Pallene Saturn XXXIII (33)

[99]

< 5

0.043

Satellite of Saturn

Polydeuces Saturn XXXIV (34) Dione C

[100]

< 5

0.03

Satellite of Saturn — Dione trojan

17P/Holmes

[101]

< 5

Comet

(53319) 1999 JM8

[102]

1.75[63]

Asteroid

Methone Saturn XXXII (32)

[103]

1.6 ± 0.6

0.019

Satellite of Saturn

(285263) 1998 QE2

[104]

< 5

Near-Earth asteroid—Binary

4055 Magellan

[105]

< 5

AsteroidAmorV-type

9969 Braille

[106]

< 5

Asteroid

132524 APL

[107]

< 5

Asteroid

(6178) 1986 DA

< 5

0.002

AsteroidAmorM-type

Examples of objects below 1 km (1000 m) in radius[edit]Edit

Satellites of Jupiter

Satellites of Saturn

Satellites of Uranus

Satellites of Neptune

In the asteroid belt alone there are estimated to be between 1.1 and 1.9 million objects with a radius above 0.5 km,[64]many of which are in the range 0.5–1.0 km. Countless more have a radius below 0.5 km.



Very few objects in this size range have been explored or even imaged. The exceptions are objects that have been visited by a probe, or have passed close enough to Earth to be imaged. Radius is by mean geometric radius. Number of digits not an endorsement of significant figures. Mass scale shifts from × 1015 to 1012 kg, which is 1015 grams (Petagram - Pg).

Body

Image

Mean
radius (m)

Mass ×1012 kg

Type of object

1620 Geographos

[108]

885[65]

4

Near-Earth asteroidApollo

1862 Apollo

850

5.1

Near-Earth asteroidApolloQ-type

(214869) 2007 PA8

≈800[66]

Near-Earth asteroidApollo

100000 Astronautica

≈800[67]

Inner main-belt asteroid[68]

Dactyl Ida I

[109]

700

Asteroid moon of 243 Ida

1566 Icarus

700

2.9

Near-Earth asteroidApolloU-type

4769 Castalia

700[69]

1.3[70]

Near-Earth asteroidApollo

(137108) 1999 AN10

650

Near-Earth asteroidApollo

(29075) 1950 DA

[110]

600

3[note 2]

Near-Earth asteroidApollo

(66391) 1999 KW4

[111]

600

2.33

Mercury-crosser asteroidAten

46P/Wirtanen

600

Comet

103P/Hartley Hartley 2

[112]

570±80

0.3[71]

Comet (6.46-year period)

3908 Nyx

520

5

Near-Earth asteroidAmorV-type

14827 Hypnos

450[72]

Comet (dormant)[73]

2062 Aten

450[74]

0.76[75]

Near-Earth asteroidAten

2007 CA19

432

1.2

Near-Earth asteroidApollo

6489 Golevka

350[76]

Near-Earth asteroidApollo

25143 Itokawa

346

0.0358

Near-Earth asteroidApollo

2004 XP14

300

Near-Earth asteroidApollo

(144898) 2004 VD17

290

3[77]

Near-Earth asteroidApollo

Aegaeon Saturn LIII (53)

[113]

250

Satellite of Saturn

2005 YU55[78] 308635

[114]

180[79]

Near-Earth asteroidApolloPHO[80]

4660 Nereus

[115]

165[81]

Near-Earth asteroidApollo

99942 Apophis

[116]

162.5[82]

0.05[77]

Near-Earth asteroidAtenPHO

S/2009 S 1

[117]

150

Satellite of Saturn

2010 TK7

150

Earth trojanApollo

2007 TU24

[118]

125[83]

Near-Earth asteroidApolloPHO

2002 JE9

100

NEAApolloPHO

2010 XC15

100

NEAApolloPHO

1994 WR12

65[84]

0.002[77]

Near-Earth asteroidAten

2009 FD

65[85]

0.0028[85]

Near-Earth asteroidApollo

2008 HJ

[

18 [86]

0.000005 [86]

Near-Earth asteroid & fast rotator (42 s)[86]

367943 Duende 2012 DA14

[119]

15

Near-Earth asteroid

1998 KY26

[120]

15[87]

Near-Earth asteroid & fast rotator (10 m)

Currently most of the objects of mass between 109 kg to 1012 kg (less than 1000 teragrams (Tg)) listed here are near-Earth asteroids. (See also: List of NEAs by distance from Sun.) 1994 WR12 possesses less mass than the Great Pyramid of Giza, 5.9 × 109 kg.

For more about very small objects in the Solar System, see MeteoroidMicrometeoroid, and Interplanetary dust cloud. (See also Visited/imagedbodies.)

Surface gravity[edit]Edit

The surface gravity at the equator of a body can in most cases be accurately calculated using Newton's law of universal gravitation andcentrifugal force.

The gravitational acceleration at the equator is given by Newton's law of universal gravitation. The formula that follows from this law is:

where

ag is the magnitude of the gravitational acceleration
G is the gravitational constant
m is the mass of the celestial body
r is the equatorial radius of the celestial body (if this varies significantly, the mean equatorial radius is used)

The magnitude of the outward acceleration due to centrifugal force is given by

where

T is the rotation peri



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