HD 125072
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Centaurus |
| Right ascension | 14h 19m 04.8348s[1] |
| Declination | −59° 22′ 44.533″[1] |
| Apparent magnitude (V) | 6.66[1] |
| Characteristics | |
| Spectral type | K3 IV[1] |
| U-B color index | +0.905[1] |
| B-V color index | +1.025[1] |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | −14.9 km/s |
| Proper motion (μ) | RA: −454.53 mas/yr Dec.: −810.00 mas/yr |
| Parallax (π) | 84.50 ± 0.79[1] mas |
| Distance | 38.6 ± 0.4 ly (11.8 ± 0.1 pc) |
| Details | |
| Surface gravity (log g) | 4.5[2] |
| Temperature | 4,965[2] K |
| Metallicity | [Fe/H] = -0.70[3] |
| Age | 9.98×109[3] years |
| Other designations | |
HD 125072 (Gleise 542) is K3-IV class star in the constellation Centaurus. The components of the space velocity for this star are U=−18.5, V=−6.9 and W=−26.9 km/s. Based on the composition and kinematics of this star, it has an estimated age of about 10 billion years.[3]
[edit] References
- ^ a b c d e f g h SIMBAD query result: LHS 2892 -- High proper-motion Star. Centre de Données astronomiques de Strasbourg. Retrieved on 2008-04-09.
- ^ a b Perrin, M.-N.; Cayrel de Strobel, G.; Dennefeld, M. (1988). "High S/N detailed spectral analysis of four G and K dwarfs within 10 PC of the sun". Astronomy and Astrophysics 191 (2): 237-247.
- ^ a b c Lachaume, R.; Dominik, C.; Lanz, T.; Habing, H. J. (1999). "Age determinations of main-sequence stars: combining different methods". Astronomy and Astrophysics 348: 897-909.
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