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Ross 154
From Wikipedia, the free encyclopedia
| Observation data Equinox J2000 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 49m 49.4s |
| Declination | -23° 50' 10" |
| Apparent magnitude (V) | 10.44 |
| Characteristics | |
| Spectral type | M3.5V |
| U-B color index | ~1.3 |
| B-V color index | 1.76 |
| Variable type | Flare star |
| Astrometry | |
| Radial velocity (Rv) | -6.9 km/s |
| Proper motion (μ) | RA: 637.55 mas/yr Dec.: -192.47 mas/yr |
| Parallax (π) | 336.90 ± 1.78 mas |
| Distance | 9.68 ± 0.05 ly (2.97 ± 0.02 pc) |
| Absolute magnitude (MV) | 13.08 |
| Details | |
| Mass | 0.17 M☉ |
| Radius | 0.24 R☉ |
| Luminosity | 0.0005 L☉ |
| Temperature | 2,700 K |
| Metallicity | |
| Rotation | |
| Age | years |
| Other designations | |
Ross 154 is a red dwarf star approximately 3.0 pc or 9.68 light years from the Sun. Its closest neighbour is Barnard's star, 1.66 pc or 5.41 ly away.
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