Omega 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 | |
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
In April 2013, a planet was identified.[1]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.7 MJ | 1.1 | 277.02 ± 0.52 | 0.106 | — | — |
- ↑ 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.
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