HD 158614
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ophiuchus |
| Right ascension | 17h 30m 23.79699s[1] |
| Declination | −01° 03′ 46.4882″[1] |
| Apparent magnitude (V) | +5.31[2] |
| Characteristics | |
| Spectral type | G8 IV-V[2] |
| U−B color index | .30 |
| B−V color index | +0.72[2] |
| V−R color index | .37 |
| R−I color index | .33 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | −77.3 km/s |
| Proper motion (μ) | RA: –127.77[1] mas/yr Dec.: –168.61[1] mas/yr |
| Parallax (π) | 61.19 ± 0.68[1] mas |
| Distance | 53.3 ± 0.6 ly (16.3 ± 0.2 pc) |
| Details | |
| Mass | 1.1[2] M☉ |
| Radius | 1.7[2] R☉ |
| Luminosity | 2.5[2] L☉ |
| Surface gravity (log g) | 4.00[2] cgs |
| Temperature | 5,500 ± 150[2] K |
| Age | 5 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 158614 is a spectroscopic binary star system approximately 60 light-years away in the constellation of Ophiuchus.
This system is in the Zeta Herculis moving group, which is of low metallicity stars, 5 billion years old. Besides ζ Herculis, the group includes δ Trianguli, ζ Reticuli, 1 Hydrae, Gl 456, φ2 Pavonis, and GJ 9079.[3]
This binary was included in a search for brown dwarfs that turned up no large companions.
See also
References
- 1 2 3 4 5 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357
- 1 2 3 4 5 6 7 8 Malagnini, M. L.; Morossi, C. (November 1990), "Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars", Astronomy and Astrophysics Supplement Series 85 (3): 1015–1019, Bibcode:1990A&AS...85.1015M
- ↑ G. F. Porto de Mello, L. da Silva (1991). "On the physical existence of the Zeta HER moving group - A detailed analysis of Phi exp 2 Pavonis". Astronomical Journal 102: 1816–1825. Bibcode:1991AJ....102.1816P. doi:10.1086/116006.
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