24 Lyncis
Star in the constellation Lynx
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24 Lyncis is a single[8] star in the northern constellation of Lynx. It is visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 4.96.[1] The distance to this star, as determined from its parallax measurements, is around 274 light years.[1] It is moving further away from the Earth with a heliocentric radial velocity of about +9 km/s.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 07h 43m 00.41551s[1] |
| Declination | +58° 42′ 37.2950″[1] |
| Apparent magnitude (V) | 4.93[2] |
| Characteristics | |
| Spectral type | A3 IVn[3] |
| B−V color index | +0.104±0.015[2] |
| Astrometry | |
| Radial velocity (Rv) | +9.4±2.3[2] km/s |
| Proper motion (μ) | RA: −37.50[1] mas/yr Dec.: −52.29[1] mas/yr |
| Parallax (π) | 12.22±0.20 mas[1] |
| Distance | 267 ± 4 ly (82 ± 1 pc) |
| Absolute magnitude (MV) | 0.37[2] |
| Details | |
| Mass | 1.89[4] M☉ |
| Radius | 1.7[5] R☉ |
| Luminosity | 60.81[2] L☉ |
| Surface gravity (log g) | 3.25[4] cgs |
| Temperature | 8,786±299[4] K |
| Rotational velocity (v sin i) | 233[6] km/s |
| Age | 262[4] Myr |
| Other designations | |
| 24 Lyn, BD+59° 1103, FK5 292, HD 61497, HIP 37609, HR 2946, SAO 26474, WDS J07430+5843A[7] | |
| Database references | |
| SIMBAD | data |
This object has a stellar classification of A3 IVn,[3] matching an A-type star with a subgiant luminosity class. The 'n' suffix indicates "nebulous" absorption lines due to rapid rotation. The star is spinning with a projected rotational velocity of 233 km/s,[6] giving it an equatorial bulge that is 17% larger than the polar radius.[9] Zorec et al. (2012) estimate the star is actually 88% of the way through its main sequence lifetime.[6] It is 262[4] million years old with 1.89[4] times the mass of the Sun. 24 Lyncis is radiating 61[2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,786 K.[4]
There is a magnitude 11.15 visual companion at an angular separation of 55″ along a position angle of 324°, as of 2010.[10]