Sunday, March 2, 2008

Gl 183 AB

Star type
g A: K3V
g B: M? V

Distance from Earth
g 29.46 ly (alt. source says 28.8 ly)

Star Service No.
g NA

g A: NA
g B: NA

Diameter/Mass/Temp (xSol)
g A: 81%; 80%-85%; 4825 K
g B: NA

Brightness (xSol)
g A: 21%
g B: NA

g A: 105%; metal-rich system
g B: NA

Comparison to Sol
g A: NA
g B: NA

Picture of star
g A: NA
g B: NA

Star system features
g Title member of the two-billion-year-old HR 1614 stellar moving group
g Star appears to have a companion

Known planets
g A: NA
g B: NA

Habitable zone
g A: Radial velocity analysis suggests that giant planets of one tenth to 10 times the mass of Jupiter do not exist within 0.1 to four AUs of Star A. Assuming that the spectroscopic companion B does not preclude a stable inner planetary orbit, the distance from Star A where an Earth-type planet would be "comfortable" with liquid water is centered around only 0.457 AU, between the orbital distances of Mercury and Venus in the Solar System. An Earth-type in such a water-zone orbit would probably would have a period of around 123 days or a third of an Earth year. Porto de Mello lists it as one of 13 nearby astrobiologically interesting stars
g B: NA

Orbital map
g NA

View from star
g NA

Nearby stars
(Star systems with 10 light years)
g L 879-14: 4.0 ly
g L 736-49: 6.2 ly (K-M3 V)
g L 737-9: 6.7 ly
g Pi3 Orionis 2?: 6.7 ly (F6 V ?)
g BD-21 1051 AB: 7.8 ly
g Ross 41: 8.4 ly
g BD-11 916: 8.6 ly
g G 99-47: 8.6 ly
g LP 656-38: 8.7 ly
g BD+00 2989: 9.5 ly
g G 99-44: 9.5 ly
g G 160-28: 9.6 ly
g Gamma Leporis 3?: 10 ly (F6-7 V K2 V ?)
g Rana: 10 ly (K0 IVe)

Map locating star system
g NA

Location in Earth sky
g In the south central edge of Constellation Eridanus, the River, near Omega Eridani, south of Mu Eridani, west of Cursa (Beta Eridani), northwest of Rigel (Beta Orionis), and east of Keid (40 Omicron2 Eridani) and Beid (Omicron1 Eridani); the system may be visible to some without a telescope

Other names
g A: HIP 23311; HR 1614; BD-05 1123; HD 32147; SAO 131688; LHS 200; LTT 2412; LFT 382; LPM 200; BD-05 1123 A
g B: HD 32147; BD-05 1123 B

Sci-fi mentions
g NA

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