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|Right ascension (Epoch J2000)||16h 15m 37.30s|
|Declination (Epoch J2000)||-08° 22' 10.00"|
|Spectral type||G1-5 V-Va|
|Distance from Sol||45.7 ly|
|Other designations||CSV 101566, NSV 7577, SV ZI 1223, 18 Sco, HR 6060, Gl 616, Hip 79672, HD 146233, BD-07 4242, SAO 141066, LHS 3172, LTT 6482, LFT 1259, LPM 594.|
18 Scorpii is located about 45.7 light-years from Sol. It lies at the northern edge of the constellation Scorpius, the Scorpion -- just off its left claw.
18 Scorpii is a yellow-orange main sequence dwarf star of spectral and luminosity type G1-5 V-Va. A little bigger and brighter than Sol, the star may have a mass similar to Sol's, 1.02 to 1.03 times its diameter, and 1.05 times its luminosity. It may be 105 to to 112 percent as enriched as Sol with elements heavier than hydrogen ("metallicity"), based on its abundance of iron.
An Earth-type planet could have liquid water in a stable orbit centered around 1.02 AU from 18 Scorpii -- around the orbital distance of Earth in the Solar System. Such a planet would have an orbital period of around one Earth year.
(Data from SolStation.com)
- (Ryan et al, 2004)
- (Guinan et al, 1999)
- (Porto de Mello and da Silva, 1997)
- (Johnson and Wright, 1983, page 685)
- (Cayrel de Strobel et al, 1991, 300)