Star · sdBV
V0391 Peg
V0391 Peg is a main-sequence star of spectral type sdBV in the constellation Pegasus, 3,901 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Pegasus |
|---|---|
| Distance | 3,901 light-years (1,196 pc) |
| Apparent magnitude | magnitude 14.77 |
| Absolute magnitude | magnitude 4.38 |
| Spectral type | sdBV |
| Surface temperature | 29,300 K |
| Luminosity | 27.1 L☉ |
| Radius | 0.23 R☉ |
| Mass | 0.5 M☉ |
| Age | 10.0 billion years |
| Right ascension (J2000) | 22h 04m 12.1s |
| Declination (J2000) | +26° 25′ 08″ |
| Space velocity (relative to the Sun) | 34.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.77. Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1876 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 69 million years.
The Sun seen from there
From a planet around V0391 Peg, the Sun would look like a star of magnitude 15.22, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Planets
- V0391 Peg b 1,170-day orbit · 13.1 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.