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. |