Minor Planet in the Sol System – Union World – Population 22 Million – Represented at the Assembly. Civics: Elected AI – Assembly Representative – Elected Laws: Union + Local Main Settlements:  12 Mil Piazzi Town : 4 Mil Dawn City: 4 Mil McLane: 2 Mil

Ceres, is the only dwarf planet in the inner Sol System, and the largest asteroid.It is a rock–ice body 950 km (590 mi) in diameter, and though the smallest identified dwarf planet, it constitutes a third of the mass of the asteroid belt.Discovered on 1 January 1801 by Giuseppe Piazzi, it was the first asteroid to be identified, though it was classified as a planet at the time. It is named after Ceres, the Roman goddess of growing plants, the harvest, and motherly love. The Cererian surface is a mixture of water ice and various hydrated minerals such as carbonates and clays. It is differentiated into a rocky core and icy mantle  and  harbours an ocean of liquid water under its surface.

First survey expedition 2093  by United Earth Commander Buck McLane. First permanent settlement in 2118. During the early years, Ceres served as a Traffic Hub and Smelter base for the Asteroid Belt Miners  and was heavily mined for metals and Water Ice. Piazzi Town became the largest Asteroid Farmer Town and being the first United Earth Astro-Shroom production site. To this day the largest Astro Shroom Farming Corporations maintain HQ's on Ceres as well as Shroom Research Institutes and Labs. Several large Shroom Paste and Astro Shroom Products factories are still on Ceres.

Dawn City has become the destination for Motherly Love . It features a Mother Love Festival, The Mothers Day Museum and the largest Mother's Day Mail Order Company in the Galaxy. There are Spa's and Mother pampering and recreation facilities, Mother themed conferences and Symposiums. The Ceres Festivals draw many millions of visitors every year from all over the Galaxy. Many, especially men find the Motherly atmosphere as gaggingly “sweet” and “corny”but it is an enormous money maker with annual sales reaching several hundred billion credits. Mother Care Inc, Mother Wear Inc, Mother's Day Gifts Inc and a dozen others have their HQ's on Ceres.

The large sub surface ocean harbors , Non terran – Ceres native Life forms ( Ceres Tube Worms) and Piazzi Town is on the Ocean Floor. Ceres is connected to Sol Hub via TransMatter Tunnel, System Tram and has its own Class C Space Port. (mostly for freight) There is no Space Bus Connection (but Space Tram to Sol Hub, TNO Hub and Luna) Ceres has the usual Union Installations : School. Class II Medical, Xchange, Post Office, Federal Police Station.

747px-Ceres Cutaway

From Earth, the apparent magnitude of Ceres ranges from 6.7 to 9.3, and hence even at its brightest it is still too dim to be seen with the naked eye except under extremely dark skies.[15] The unmanned Dawn spacecraft, launched on 27 September 2007 by NASA, is expected to be the first to explore Ceres after its scheduled arrival there in 2015.[28] The spacecraft left asteroid 4 Vesta

Discovery [2]
Discovered by Giuseppe Piazzi
Discovery date 1 January 1801
MPC designation 1 Ceres
Pronunciation /

ˈsɪərz/ SEER-eez[3]

Named after Cerēs
Alternative names A899 OF; 1943 XB
Minor planet category dwarf planet

main belt

Adjective Cererian /sɨˈrɪəri.ən/[4]
Orbital characteristics[6]
Epoch June 18, 2009

(JD 2455000.5)

Aphelion 2.9858 AU (446,669,320 km)
Perihelion 2.5468 AU (380,995,855 km)
Semi-major axis 2.7654 AU (413,690,604 km)
Eccentricity 0.079138
Orbital period 4.60 yr

1679.67 d

Average orbital speed 17.882 km/s
Mean anomaly 113.410°
Inclination 10.587° to Ecliptic

9.20° to Invariable plane[5]

Longitude of ascending node 80.3932°
Argument of perihelion 72.5898°
Proper orbital elements[7]
Proper semi-major axis 2.7670962 AU
Proper eccentricity 0.1161977
Proper inclination 9.6474122°
Proper mean motion 78.193318 deg / yr
Proper orbital period 4.60397 yr

(1681.601 d)

Precession of perihelion 54.070272 arcsec / yr
Precession of the ascending node −59.170034 arcsec / yr
Physical characteristics
Equatorial radius 487.3 ± 1.8 km[8]
Polar radius 454.7 ± 1.6 km[8]
Surface area 2,850,000 sq km

9.43 ± 0.07×1020 kg[9]

0.00015 Earths 0.0128 Moons

Mean density 2.077 ± 0.036 g/cm3[8]
Equatorial surface gravity 0.27 m/s2

0.028 g[10]

Escape velocity 0.51 km/s[10]
Sidereal rotation period 0.3781 d

9.074170 h[11][12]

Axial tilt about 3°[8]
North pole right ascension 19 h 24 min


North pole declination 59°[8]
Albedo 0.090 ± 0.0033 (V-band geometric)[13]
Surface temp. min mean max
Kelvin ? ~168 K[17] 235 K[18]
Spectral type C[14]
Apparent magnitude 6.64[15] to 9.34[16]
Absolute magnitude (H) 3.36 ± 0.02[13]
Angular diameter 0.854" to 0.339

Ceres is the largest object in the asteroid belt between Mars and Jupiter.[14] The mass of Ceres has been determined by analysis of the influence it exerts on smaller asteroids. Results differ slightly between researchers.[57] The average of the three most precise values as of 2008 is 9.4×1020 kg.[9][57] With this mass Ceres comprises about a third of the estimated total 3.0 ± 0.2×1021 kg mass of the asteroid belt,[22] which is in turn about 4% of the mass of the Moon. The surface area is approximately equal to the land area of India or Argentina.[58] The mass of Ceres is sufficient to give it a nearly spherical shape in hydrostatic equilibrium.[8] In contrast, other large asteroids such as 2 Pallas,[59] 3 Juno,[60] and in particular 10 Hygiea[61] are known to be somewhat irregular in shape.

Ceres /ˈsɪəriːz/[16] (minor-planet designation1 Ceres) is the largest object in the main asteroid belt that lies between the orbits of Mars and Jupiter. With a diameter of 940 km (580 mi), Ceres is both the largest of the asteroids and the only unambiguous dwarf planet currently inside Neptune's orbit.[c] It is the 25th-largest body in the Solar System within the orbit of Neptune.

Ceres was the first asteroid to be discovered (by Giuseppe Piazzi at Palermo Astronomical Observatory on 1 January 1801).[18] It was originally considered a planet but was reclassified as an asteroid in the 1850s after many other objects in similar orbits were discovered.

Ceres is the only object in the asteroid belt currently known to be rounded by its own gravity,[8] although detailed analysis was required to exclude Vesta. From Earth, the apparent magnitude of Ceres ranges from 6.7 to 9.3, peaking once at opposition every 15 to 16 months, which is its synodic period.[13] Thus even at its brightest, it is too dim to be seen by the naked eye, except under extremely dark skies.

Ceres appears to be partially differentiated into a muddy (ice-rock) mantle, with a crust that is 60 percent rock and 40 percent ice[19] or less than 30 percent ice.It probably no longer has an internal ocean of liquid water, but there is the brine that can flow through the outer mantle and reach the surface. The surface is a mixture of water ice and various hydrated minerals such as carbonates and clayCryovolcanoes such as Ahuna Mons form at the rate of about one every fifty million years. In January 2014, emissions of water vapor were detected from several regions of Ceres. This was unexpected because large bodies in the asteroid belt typically do not emit vapor, a hallmark of comets. Any atmosphere, however, would be the minimal kind known as an exosphere.

The robotic NASA spacecraft Dawn entered orbit around Ceres on 6 March 2015.

Community content is available under CC-BY-SA unless otherwise noted.