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|Right ascension (Epoch J2000)||06h 55m 18.70s|
|Declination (Epoch J2000)||+25° 22' 32.50"|
|Spectral type||G0 V|
|Distance from Sol||56.3 ly|
|Other designations||37 Gem, HR 2569, Gl 252, HIP 33277, HD 50692, BD+25 1496, SAO 78866.|
37 Geminorum is located about 56.3 light-years from Sol. It lies in the northwest part of the constellation Gemini, the Twins. The star is a yellow-orange main sequence dwarf star of spectral and luminosity type G0 V. A little bigger and brighter than Sol, the star may have 1.1 times Sol's mass, 1.03 times its diameter, and 1.25 times its luminosity. Similarly middle-aged, however, 37 Gem appears to be around 5.5 billion years old -- somewhat older than Sol's 4.6 billion years -- and so may be old enought to have developed oxygen-generating life as happened on Earth after two billion years.
Past 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 37 Gem. If so, then conditions would be more favorable for the existence of stable orbit for an Earth-like planet (with liquid water) centered around 1.12 AU from around 37 Gem -- between the orbital distances of Earth and Mars in the Solar System. Such a planet would have an orbital period of around 1.3 years.
(Data from SolStation.com)
- (Johnson and Wright, 1983, page 661)
- (Cummings et al, 1999)