HIP 100963
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Vulpecula |
| Right ascension | 20h 28m 11.81471s[1] |
| Declination | +22° 07′ 44.3723″[1] |
| Apparent magnitude (V) | +7.088[2] |
| Characteristics | |
| Spectral type | G5[3] |
| B−V color index | +0.65[2] |
| V−R color index | +0.39[2] |
| R−I color index | +0.3[2] |
| Astrometry | |
| Radial velocity (Rv) | −1.6[4] km/s |
| Proper motion (μ) | RA: −23.90[1] mas/yr Dec.: −243.96[1] mas/yr |
| Parallax (π) | 35.42 ± 0.59[1] mas |
| Distance | 92 ± 2 ly (28.2 ± 0.5 pc) |
| Details | |
| Mass | 0.998 ± 0.006[5] M☉ |
| Luminosity | 0.968 ± 0.043[5] L☉ |
| Temperature | 5,779 ± 50[5] K |
| Metallicity [Fe/H] | −0.002[5] dex |
| Rotational velocity (v sin i) | 2.39[6] km/s |
| Age | 2.01–3.80[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HIP 100963 is a star in the faint northern constellation of Vulpecula.[2] It has an apparent visual magnitude of approximately 7.1,[2] making it generally too faint to be seen with the naked eye in most circumstances. The distance to this star, as determined using parallax measurements from the Hipparcos mission, is around 92 light-years (28 parsecs).[1]
This star has a stellar classification of G5,[2] making it a G-type star with an undetermined luminosity class. It has similar mass, temperature and chemical abundance to the Sun and was called a solar twin in a 2009 study, although its lithium abundance is three to four times that of the Sun. This lithium excess suggests that the star has a younger age of between 2.01 and 3.80 billion years, compared to the previous estimate of 5.13+0.00
−2.99 Ga from a 2007 study.[5]
References
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.. See the Vizier entry for this star.
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