HD 158614 [SEP] constellation
HD 158614
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, φ Pavonis, and GJ 9079.
This binary was included in a search for brown dwarfs that turned up no large companions.
See also.
- Zeta Herculis
estimated the group velocity at 74.5 km/s. In 1970, Richard Woolley refined the list to ten stars, including φ Pavonis and ζ/ζ Reticuli as members of this cluster.
The parallel motion of the stars in this group implies a common origin, and hence a similar age and composition. The membership of ζ Herculis and HD 158614 came into question because their composition appeared to show they were much younger than other members of the group. The average age was estimated as , while ζ Herculis was estimated