Star · G8 III
ω Ser
ω Ser is a giant star of spectral type G8 III in the constellation Serpens, 248.9 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | ome Ser · HIP 77578 |
|---|---|
| Constellation | Serpens |
| Distance | 248.9 light-years (76.3 pc) |
| Apparent magnitude | magnitude 5.21 |
| Absolute magnitude | magnitude 0.80 |
| Spectral type | G8 III |
| Surface temperature | 4,720 K |
| Luminosity | 54.2 L☉ |
| Radius | 11 R☉ |
| Mass | 1.01 M☉ |
| Metallicity [Fe/H] | -0.12 |
| Right ascension (J2000) | 15h 50m 17.5s |
| Declination (J2000) | +2° 11′ 48″ |
| Space velocity (relative to the Sun) | 20.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.21). Visible from the whole Northern Hemisphere and south to latitude 88° S. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1777. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.4 million years.
The Sun seen from there
From a planet around ω Ser, the Sun would look like a star of magnitude 9.24, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Planets
- ome Ser b 279-day orbit · 14 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 77584 6.72 light-years
- HIP 76931 10.2 light-years
- HIP 76751 12.0 light-years
- SDSS J155252.32-003501.9 15.7 light-years
- HIP 78557 16.1 light-years
- ULAS J153608.64+030556.5 16.3 light-years
- HIP 77159 16.3 light-years
- HIP 78442 17.3 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.