Star · M4V
SDSS J222000.97+121436.5
SDSS J222000.97+121436.5 is a main-sequence star of spectral type M4V in the constellation Pegasus, 290.3 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 290.3 light-years (89.0 pc) |
| Apparent magnitude | magnitude 21.94 |
| Absolute magnitude | magnitude 17.19 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.08 × 10⁻⁴ L☉ |
| Radius | 0.0543 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 20m 01.0s |
| Declination (J2000) | +12° 14′ 37″ |
| Space velocity (relative to the Sun) | 45.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.94. Visible from the whole Northern Hemisphere and south to latitude 78° S. North of latitude 78° 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 1736. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.1 million years.
The Sun seen from there
From a planet around SDSS J222000.97+121436.5, the Sun would look like a star of magnitude 9.58, 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 110120 12.2 light-years
- HIP 110901 14.7 light-years
- HIP 111282 16.7 light-years
- HIP 110365 18.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.