| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 06h46m 14.13019s[1] |
| Declination | +59° 26′ 30.0227″[1] |
| Apparent magnitude (V) | 4.86[2] (5.44 / 6.00)[3] |
| Characteristics | |
| Spectral type | A3V[2] (A1.5V + A2V)[4] |
| U−B color index | +0.08[5] |
| B−V color index | +0.084±0.012[2] |
| Astrometry | |
| Radial velocity (Rv) | −3.0±4.2[6] km/s |
| Proper motion (μ) | RA: −19.63[1] mas/yr Dec.: −7.23[1] mas/yr |
| Parallax (π) | 15.19 ± 0.78 mas[1] |
| Distance | 210 ± 10 ly (66 ± 3 pc) |
| Absolute magnitude (MV) | 0.77[2] |
| Orbit[3] | |
| Period (P) | 907.6 yr |
| Semi-major axis (a) | 2.30″ |
| Eccentricity (e) | 0.3700 |
| Inclination (i) | 134.7° |
| Longitude of the node (Ω) | 166.5° |
| Periastron epoch (T) | B 2677.4 |
| Argument of periastron (ω) (secondary) | 322.6° |
| Details | |
| 12 Lyn A | |
| Radius | 2.52[4] R☉ |
| Rotational velocity (v sin i) | 90±30[4] km/s |
| 12 Lyn B | |
| Radius | 2.44[4] R☉ |
| Rotational velocity (v sin i) | 100±30[4] km/s |
| Other designations | |
12 Lyn, BD+59°1015, GC 9850, HD 48250, HIP 32438, HR 2470, SAO 25939, WDS 06462+5927[7] | |
| Database references | |
| SIMBAD | 12 Lyn |
| 12 Lyn A | |
| 12 Lyn B | |
12 Lyncis, abbreviated 12 Lyn, is a triple star[8] system in the constellation Lynx. It is visible to the naked eye as a faint point of light with a combined apparent visual magnitude of 4.87. When seen through a telescope, it can be separated into three stars: two components with magnitudes 5.4 and 6.0 that lie at an angular separation by 1.8″ (as of 1992) and a yellow-hued star of magnitude 7.2 at a separation of 8.6″ (as of 1990).[9][10] The orbit of the two brighter stars is not known with certainty, but appears to have a period of somewhere around 700 to 900 years.[11] The pair have a projected separationof128 AU.[4] Parallax indicates the system is 210±10 light years distant from Earth.[1]
