Magnitude 4.12 Apparent magnitude (V) 4.12 | Constellation Hydra | |
People also search for Kappa Hydrae, Phi3 Hydrae, Mu Hydrae | ||
Upsilon1 Hydrae is a yellow giant star in the constellation of Hydra. The star is one of Okayama Planet Search's main target for planet search and has turned out to host a substellar companion.
Substellar companion
The Okayama Planet Search team published a paper in 2005 reporting investigations on radial velocity variations observed for a set of orange giant stars and announcing the detection of a brown dwarf companion in an eccentric orbit around Upsilon1 Hydrae. The orbital period is roughly 4.1 years.
References
Upsilon1 Hydrae Wikipedia(Text) CC BY-SA