V1149 Orionis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 41m 26.78779s |
| Declination | +03° 46′ 40.9348″ |
| Apparent magnitude (V) | 6.59 |
| Characteristics | |
| Spectral type | K0III or K1III + late-F or G |
| B−V color index | +1.14 |
| J−H color index | +0.721 |
| J−K color index | +0.875 |
| Variable type | RS CVn |
| Astrometry | |
| Radial velocity (Rv) | 26.90 ± 0.3 km/s |
| Proper motion (μ) | RA: 34.517 mas/yr Dec.: 4.825 mas/yr |
| Parallax (π) | 6.6357±0.0581 mas |
| Distance | 492 ± 4 ly (151 ± 1 pc) |
| Absolute magnitude (MV) | 0.68±0.37 |
| Orbit | |
| Primary | HD 37824 A |
| Companion | HD 37824 B |
| Period (P) | 53.57465±0.00072 d |
| Semi-major axis (a) | 19.518±0.083×106 km (minimum) |
| Eccentricity (e) | 0.0 (adopted) |
| Periastron epoch (T) | 2448625.022±0.037 |
| Details | |
| HD 37824 A | |
| Mass | 1.5–2.5 M☉ |
| Radius | 12.6±2.2 R☉ |
| Luminosity | 67±23 L☉ |
| Metallicity [Fe/H] | 0.0 dex |
| Rotation | 54.1 |
| Rotational velocity (v sin i) | 14.9±1.0 km/s |
| Other designations | |
| V1149 Ori, AG+03° 687, BD+03° 1007, Gaia DR3 3224222985512259072, HD 37824, HIP 26795, SAO 113040, PPM 149320, TIC 199890794, TYC 123-713-1, GSC 00123-00713, 2MASS J05412678+0346410 | |
| Database references | |
| SIMBAD | HD 37824 |
HD 37824 is a spectroscopic binary star system in the constellation of Orion. It has the variable-star designation V1149 Orionis (abbreviated to V1149 Ori). With an apparent magnitude of 6.59, it is near the limit for naked eye observation from Earth, faintly visible as an orange-hued dot of light under dark skies. It is located approximately 492 light-years (151 parsecs) distant according to Gaia DR3 parallax measurements, and is moving further away at a heliocentric radial velocity of 26.90 km/s.