HIP 100963

HIP 100963
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Vulpecula
Right ascension 20h 28m 11.8155s[1]
Declination +22° 07′ 44.371″[1]
Apparent magnitude (V) +7.088[2]
Characteristics
Spectral type G5[3]
B−V color index +0.65[4]
V−R color index +0.39[4]
R−I color index +0.3[4]
Astrometry
Radial velocity (Rv)−1.6[5] km/s
Proper motion (μ) RA: −22.644(18) mas/yr[1]
Dec.: −244.007(20) mas/yr[1]
Parallax (π)35.5219 ± 0.0244 mas[1]
Distance91.82 ± 0.06 ly
(28.15 ± 0.02 pc)
Details
Mass0.998 ± 0.006[6] M☉
Luminosity0.968 ± 0.043[6] L☉
Temperature5,779 ± 50[6] K
Metallicity [Fe/H]−0.002[6] dex
Rotational velocity (v sin i)2.39[7] km/s
Age2.01–3.80[6] Gyr
Other designations
BD+21 4221, HD 195034, LTT 15980, NLTT 49310, PPM 111203, SAO 88711.[4]
Database references
SIMBADdata

HIP 100963 is a G-type star in the faint northern constellation of Vulpecula[4] resembling the Sun. It has an apparent visual magnitude of approximately 7.1,[4] 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 Gaia spacecraft, is around 92 light-years (28 parsecs).[1]

This star has a stellar classification of G5,[4] 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 and it is much younger. 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 Gyr from a 2007 study.[6]

  1. ^ a b c d e Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
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  3. ^ Cite error: The named reference aj133_6_2524 was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference sb0 was invoked but never defined (see the help page).
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  6. ^ a b c d e f Cite error: The named reference aaa501_2 was invoked but never defined (see the help page).
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