41 Aurigae
Binary star system in the constellation Auriga
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41 Aurigae is a binary star[12] system located around 310–316 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a dim, white-hued star with a combined apparent visual magnitude of 5.83.[12] This system is moving further from the Earth with a heliocentric radial velocity of 31 km/s.[1] It is a probable member of the Hyades Supercluster.[13]
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Auriga[1] |
| 41 Aur A | |
| Right ascension | 06h 11m 36.59170s[2] |
| Declination | +48° 42′ 39.5571″[2] |
| Apparent magnitude (V) | 6.15[3] |
| 41 Aur B | |
| Right ascension | 06h 11m 36.55276s[4] |
| Declination | +48° 42′ 47.0365″[4] |
| Apparent magnitude (V) | 6.84[3] |
| Characteristics | |
| 41 Aur A | |
| Evolutionary stage | Main sequence[2] |
| Spectral type | A2Va+[5] |
| B−V color index | 0.06[3] |
| 41 Aur B | |
| Evolutionary stage | main sequence[6] |
| Spectral type | kA5hA5mF0(IV-V)[5] |
| B−V color index | 0.15[3] |
| Astrometry | |
| 41 Aur A | |
| Radial velocity (Rv) | 31[7] km/s |
| Proper motion (μ) | RA: +14.994[2] mas/yr Dec.: −55.704[2] mas/yr |
| Parallax (π) | 10.6629±0.0539 mas[2] |
| Distance | 306 ± 2 ly (93.8 ± 0.5 pc) |
| 41 Aur B | |
| Radial velocity (Rv) | 29[7] km/s |
| Proper motion (μ) | RA: +19.171[4] mas/yr Dec.: −52.460[4] mas/yr |
| Parallax (π) | 10.5899±0.0969 mas[4] |
| Distance | 308 ± 3 ly (94.4 ± 0.9 pc) |
| Details | |
| 41 Aur A | |
| Mass | 2.31[8] M☉ |
| Radius | 2.08[8] R☉ |
| Luminosity | 27[8] L☉ |
| Surface gravity (log g) | 4.17[8] cgs |
| Temperature | 9,114[8] K |
| Rotational velocity (v sin i) | 138[9] km/s |
| 41 Aur B | |
| Mass | 1.76[8] M☉ |
| Radius | 1.91[8] R☉ |
| Luminosity | 11[8] L☉ |
| Surface gravity (log g) | 4.13[8] cgs |
| Temperature | 7,586[8] K |
| Rotational velocity (v sin i) | 133[6] km/s |
| Other designations | |
| 41 Aur, BD+48°1352, HIP 29388, ADS 4773, WDS J06116+4843 | |
| 41 Aur A: GC 7853, HD 42127, HR 2176, SAO 40925[10] | |
| 41 Aur B: GC 7851, HD 42126, HR 2175, SAO 40924[11] | |
| Database references | |
| SIMBAD | 41 Aur A |
| 41 Aur B | |
As of 2012, the pair had an angular separation of 7.39″ along a position angle of 357.7°.[14] The primary component is an A-type main-sequence star with a stellar classification of A2Va+[5] and a visual magnitude of 6.15.[3] The magnitude 6.84[3] secondary companion is a possible Am star[15] with a stellar classification of kA5hA5mF0(IV-V),[5] showing the calcium K line and hydrogen lines of an A5 star and the metal lines of an F0 star.