HD 211415
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Grus |
| Right ascension | 22h 18m 15.61403s |
| Declination | –53° 37′ 37.4640″ |
| Apparent magnitude (V) | 5.33/9.9 |
| Characteristics | |
| Spectral type | G0V + MV |
| U−B color index | +0.06 |
| B−V color index | +0.61 |
| Astrometry | |
| Radial velocity (Rv) | −12.68±0.17 km/s |
| Proper motion (μ) | RA: +438.75 mas/yr Dec.: –632.46 mas/yr |
| Parallax (π) | 72.54±0.36 mas |
| Distance | 45.0 ± 0.2 ly (13.79 ± 0.07 pc) |
| Absolute magnitude (MV) | 4.69 |
| Details | |
| HD 211415 A | |
| Mass | 0.941±0.016 M☉ |
| Surface gravity (log g) | 4.42±0.03 cgs |
| Temperature | 5,864±18 K |
| Metallicity [Fe/H] | −0.21±0.01 dex |
| Rotational velocity (v sin i) | 0.32 km/s |
| Age | 2.6–4.1 Gyr |
| HD 211415 B | |
| Mass | 0.59 M☉ |
| Other designations | |
| CD -54°9222, GCTP 5395.00, GJ 853 A, HD 211415, HIP 110109, HR 8501, LHS 3790, LFT 1702, LTT 8943, SAO 247400. | |
| Database references | |
| SIMBAD | data |
HD 211415 is a double star in the constellation Grus. With an apparent visual magnitude of 5.33, it is visible to the naked eye. The annual parallax shift is 72.54 mas, which yields a distance estimate of 45 light years. It has a relatively high proper motion, traversing the celestial sphere at the rate of 93.4 mas per year, and is moving closer to the Sun with a radial velocity of −13 km/s.
As of 1994, the two members of this system have an angular separation of 2.884″ along a position angle of 34.935°. Their projected separation is 39.8 AU. The pair are most likely gravitationally-bound with an orbit is probably being viewed nearly edge-on and a semimajor axis of around 100 AU.
HD 211415 was identified in September 2003 by astrobiologist Margaret Turnbull from the University of Arizona in Tucson as one of the most promising nearby candidates for hosting life based on her analysis of the HabCat list of stars. It is a G-type main-sequence star with a stellar classification of G0 V.