LP 658-2
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 55m 09.53049s |
| Declination | −04° 10′ 07.0653″ |
| Apparent magnitude (V) | 14.488 |
| Characteristics | |
| Evolutionary stage | white dwarf |
| Spectral type | DZ11.8 |
| Apparent magnitude (B) | 15.49 |
| Apparent magnitude (V) | 14.488 |
| Apparent magnitude (RKC) | 13.99 |
| Apparent magnitude (IKC) | 13.51 |
| Apparent magnitude (J) | 13.05 ± 0.03 |
| Apparent magnitude (H) | 12.86 ± 0.03 |
| Apparent magnitude (KS) | 12.78 ± 0.03 |
| B−V color index | 1.0 |
| Astrometry | |
| Proper motion (μ) | RA: 535.249 mas/yr Dec.: −2,317.011 mas/yr |
| Parallax (π) | 155.2373±0.0175 mas |
| Distance | 21.010 ± 0.002 ly (6.4418 ± 0.0007 pc) |
| Absolute magnitude (MV) | 15.44 ± 0.03 |
| Details | |
| From Holberg etal. (2008) | |
| Mass | 0.45±0.01 M☉ |
| Radius | 0.014 R☉ |
| Surface gravity (log g) | 7.80±0.02 cgs |
| Temperature | 4,270±70, K |
| Age | 6.42 Gyr |
| Details | |
| From Subasavage etal. (2009) | |
| Mass | 0.80±0.01 M☉ |
| Radius | 0.010 R☉ |
| Surface gravity (log g) | 8.35±0.01 cgs |
| Temperature | 5,180±70 K |
| Age | 6.82±0.02 Gyr |
| Other designations | |
| HL 4, GJ 223.2, GJ 9193, EGGR 45, G 99-44, G 106-12, LHS 32, LP 658-2, NLTT 15811, WD 0552-041 | |
| Database references | |
| SIMBAD | data |
LP 658-2 is a degenerate (white dwarf) star in the constellation of Orion, the single known object in its system. It has an apparent visual magnitude of approximately 14.488.