Gliese 250
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Monoceros |
| Right ascension | 06h 52m 18.05s |
| Declination | -05° 10′ 25.4″ |
| Apparent magnitude (V) | 6.57/10.08 |
| Characteristics | |
| Spectral type | K3 V/M2.5 V |
| U-B color index | 0.95/1.21 |
| B-V color index | 1.06/1.47 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -10.3 km/s |
| Proper motion (μ) | RA: -544.42 mas/yr Dec.: -3.30 mas/yr |
| Parallax (π) | 114.94 ± 0.86 mas |
| Distance | 28.4 ± 0.2 ly (8.7 ± 0.07 pc) |
| Absolute magnitude (MV) | 6.88 |
| Details | |
| Mass | 0.80/0.50 M☉ |
| Radius | 0.67/0.10 R☉ |
| Luminosity | 0.15/0.00058 L☉ |
| Temperature | 4.400/2.900 K |
| Metallicity | ? % Sun |
| Rotation | ? |
| Age | ? years |
| Other designations | |
Gliese 250 or GJ 250 is a binary star system with a relatively high proper motion. The primary star is a main sequence orange-red dwarf star, while the companion is smaller a red dwarf. The two stars are separated by 58 arcsecs, which, at the estimated distance, is equivalent to about 500 AUs.
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