HD 158614

HD 158614 is a spectroscopic binary star system approximately 60 light-years away in the constellation of Ophiuchus.

HD 158614

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Ophiuchus
Right ascension	17^h 30^m 23.79699^s[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
BD-00 3300, Gliese 678, HIP 85667, HR 6516, SAO 141702.
Database references
SIMBAD	data

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

• Zeta Herculis

References

1. 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
2. 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
3. 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.