Ross 47 is a flare star of spectral type M4 located in the constellation Orion, 19 light-years from Earth.[1]
| Observation data Epoch J1950.0 Equinox J1950.0 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 42m 09.26772s[1] |
| Declination | +12° 29′ 21.6225″[1] |
| Apparent magnitude (V) | +11.509[2] |
| Characteristics | |
| Spectral type | M4.0Vn |
| U−B color index | +14.264 |
| B−V color index | +13.130 |
| Variable type | BY Dra[2] |
| Astrometry | |
| Radial velocity (Rv) | 105.83 ± 0.18 km/s |
| Proper motion (μ) | RA: 2000.53[1] mas/yr Dec.: −1569.63[1] mas/yr |
| Parallax (π) | 172.6762 ± 0.0286 mas[3] |
| Distance | 18.888 ± 0.003 ly (5.7912 ± 0.0010 pc) |
| Absolute magnitude (MV) | +12.75 |
| Details[4] | |
| Mass | 0.35 M☉ |
| Radius | 0.17 R☉ |
| Luminosity | 0.00069 L☉ |
| Temperature | 3026±100 K |
| Metallicity [Fe/H] | -0.19±0.17 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Ross 47 Location of Ross 47 in the constellation Orion | |
Stars of Orion | |
|---|---|
| Bayer | |
| Flamsteed | |
| Variable |
|
| HR |
|
| HD | |
| Gliese |
|
| Other |
|
This article about a red dwarf is a stub. You can help Wikipedia by expanding it. |