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|Right ascension (Epoch J2000)||15h 21m 48.10s|
|Declination (Epoch J2000)||-48° 19' 03.50"|
|Spectral type||G2-5 V|
|Distance from Sol||47.5 ly|
|Other designations||Nu2 Lup, HR 5699, Gl 582, Hip 75181, HD 136352, CD-47 9919, CP(D)-47 7075, SAO 225697, LHS 395, LTT 6225, LFT 1200, LPM 565.|
Nu(2) Lupi is located about 47.5 light-years from Sol. It lies in the southern part of the constellation Lupus, the Wolf. Nu(2) Lupi is a yellow-orange main sequence dwarf star of spectral and luminosity type G2-5 V. Similar to Sol, this "Solar analogue" may have roughly the same mass, around 99 percent of its diameter, and 97 percent of its luminosity. It appears to be only around 58 percent as enriched than Sol in elements heavier than hydrogen ("metals") based on its abundance of iron
An Earth-type planet with liquid water on its surface would require a stable orbit centered around 0.98 AU from Nu2 Lupi -- just under the orbital distance of Earth in the Solar System. Such a planet would have an orbital period lasting close to an Earth year. However, given its conjectured young age, an Earth-sized planet is not likely to have developed an oxygen-rich atmosphere but is likely to be under heavy bombardment by asteroids and comets.
(Data from SolStation.com)
- (Giusa Cayrel de Strobel, 1996)
- (Pasinetti-Fracassini et al, 2001)
- (Johnson and Wright, 1983, page 683)
- (B.J. Taylor, 2003)