27 Lyncis
Star in the constellation Lynx
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27 Lyncis is a single[6] star in the northern constellation of Lynx. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.78.[2] This object is located around 250 light years away from the Sun, as determine from parallax measurements.[1] It is moving further from the Sun with a heliocentric radial velocity of +11 km/s.[2]
 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 08h 08m 27.44632s[1] |
| Declination | +51° 30′ 24.0055″[1] |
| Apparent magnitude (V) | 4.78[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A2 V[3] |
| B−V color index | 0.048±0.006[2] |
| Astrometry | |
| Radial velocity (Rv) | +11.0±4.2[2] km/s |
| Proper motion (μ) | RA: −60.95[1] mas/yr Dec.: −3.11[1] mas/yr |
| Parallax (π) | 13.04±0.31 mas[1] |
| Distance | 250 ± 6 ly (77 ± 2 pc) |
| Absolute magnitude (MV) | 0.36[2] |
| Details | |
| Mass | 2.24[4] M☉ |
| Luminosity | 65.41[2] L☉ |
| Surface gravity (log g) | 3.96[4] cgs |
| Temperature | 10,014±340[4] K |
| Rotational velocity (v sin i) | 183[4] km/s |
| Age | 157[4] Myr |
| Other designations | |
| 27 Lyn, BD+51°1391, FK5 307, HD 67006, HIP 39847, HR 3173, SAO 26687, WDS J08085+5130A[5] | |
| Database references | |
| SIMBAD | data |
This is an ordinary A-type main-sequence star with a stellar classification of A2 V,[3] which indicates it is generating energy through hydrogen fusion at its core. It is 157[4] million years old and is spinning with a projected rotational velocity of 183.[4] The star has 2.24[4] times the mass of the Sun and is radiating 65[2] times the Sun's luminosity from its photosphere at an effective temperature of 10,014 K.[4] X-ray emission is being detected near these coordinates, which may be coming from an undetected companion or a background source.[7]
The Upper Tanana, Gwich'in, and Ahtna indigenous people of Alaska and northern Canada (Dene) see this star as the heart of an all-sky "Traveller" constellation. The Lower Tanana instead identify 21 Lyncis as the heart.[8][9]