Star · M1V
SDSS J233129.35+155222.5
SDSS J233129.35+155222.5 is a main-sequence star of spectral type M1V in the constellation Pegasus, 131.1 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 131.1 light-years (40.2 pc) |
| Apparent magnitude | magnitude 21.47 |
| Absolute magnitude | magnitude 18.45 |
| Spectral type | M1V |
| Surface temperature | 3,370 K |
| Luminosity | 2.60 × 10⁻⁵ L☉ |
| Radius | 0.0149 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 23h 31m 29.2s |
| Declination (J2000) | +15° 52′ 21″ |
| Space velocity (relative to the Sun) | 32.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.47. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1895. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around SDSS J233129.35+155222.5, the Sun would look like a star of magnitude 7.85, in the direction where our sky has the constellation Crater. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J23322678+1234530 8.37 light-years
- HIP 116976 10.7 light-years
- HIP 117336 10.8 light-years
- PSO J353.6355+13.2209 11.3 light-years
- HIP 116907 11.9 light-years
- HIP 115417 12.3 light-years
- GJ 4356A 12.6 light-years
- SIMP J23225888+1300322 12.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.