Omega Serpentis

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ω Serpentis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Serpens
Right ascension 15h 50m 17.5s
Declination +02° 11' 47"
Apparent magnitude (V) +5.21
Distance 263 ± 15 ly
(81 ± 5 pc)
Spectral type G8III
Other designations
34 Serpentis, HR 5888, HD 141680, SAO 121215, HIP 77578

Omega Serpentis (ω Ser, ω Serpentis) is a star in the constellation Serpens.

Omega Serpentis is a yellow G-type giant with an apparent magnitude of +5.21. It is approximately 263 light years from Earth. It is a member of the Ursa Major Stream.

Planetary system[edit]

In April 2013, a planet was identified.[1]

The Omega Serpentis planetary system
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b 1.7 MJ 1.1 277.02 ± 0.52 0.106


  1. ^ Sato, Bun'ei; Omiya, Masashi; Harakawa, Hiroki; Liu, Yu-Juan; et al. (2013). "Planetary Companions to Three Evolved Intermediate-Mass Stars: HD 2952, HD 120084, and omega Serpentis". Publ. Astron. Soc. Japan: 1–15. arXiv:1304.4328Freely accessible.