36 Ophiuchi C



36 Ophiuchi C

A main sequence orange-red dwarf (K5-6 Ve), Star C has only about 71 percent of Sol's mass (RECONS estimate), 72 percent of its diameter (Johnson and Wright, 1983, page 689), 8.7 percent percent of its luminosity, and 46 to 100 percent of Sol's abundance of elements heavier than hydrogen (metallicity), based on its abundance of iron (Cayrel de Strobel et al, 1991, page 301). The star orbits the AB pair from around 4,370 to 5,390 AUs away. It is a RS CVn type variable star designated V2215 Oph, according to the SIMBAD Astronomical Database. Some useful star catalogue numbers include: Gl 663 C, Gl 664, Hip 84478, HD 156026, CD-26 12036, CP(D)-26 5863, SAO 185213, LPM 634, LFT 1332, LTT 6874, and LHS 439.

Habitable Zone around Star C

The distance from Star C where an Earth-type rocky planet may have liquid water on its surface is probably between 0.4 and 0.5 AU -- between the orbital distances of Mercury and Venus in the Solar System. At that distance range from Star C, such a planet would have an orbital period of less than 154 days, less than half an Earth year