Star · M4V
SDSS J213352.72+101841.0
SDSS J213352.72+101841.0 is a main-sequence star of spectral type M4V in the constellation Pegasus, 169.6 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 169.6 light-years (52.0 pc) |
| Apparent magnitude | magnitude 22.38 |
| Absolute magnitude | magnitude 18.80 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 4.74 × 10⁻⁵ L☉ |
| Radius | 0.0259 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 33m 52.7s |
| Declination (J2000) | +10° 18′ 40″ |
| Space velocity (relative to the Sun) | 25.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.38. Visible from the whole Northern Hemisphere and south to latitude 80° S. North of latitude 80° 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 the year 1856. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around SDSS J213352.72+101841.0, the Sun would look like a star of magnitude 8.41, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 107246 9.61 light-years
- HIP 105431 9.62 light-years
- HIP 106074 10.6 light-years
- HIP 105200 11.7 light-years
- HIP 107107 13.7 light-years
- 4 Peg 14.0 light-years
- HIP 106534 16.1 light-years
- HIP 107494 17.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.