Star · M2V
SIPS J2150-7520B
SIPS J2150-7520B is a main-sequence star of spectral type M2V in the constellation Octans, 79.0 light-years from the Sun.
| Constellation | Octans |
|---|---|
| Distance | 79.0 light-years (24.2 pc) |
| Apparent magnitude | magnitude 21.16 |
| Absolute magnitude | magnitude 19.24 |
| Spectral type | M2V |
| Surface temperature | 3,200 K |
| Luminosity | 1.82 × 10⁻⁵ L☉ |
| Radius | 0.0139 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 50m 19.5s |
| Declination (J2000) | −75° 20′ 42″ |
| Space velocity (relative to the Sun) | 107.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.16. Visible from the whole Southern Hemisphere and north to latitude 15° N. South of latitude 15° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1947. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around SIPS J2150-7520B, the Sun would look like a star of magnitude 6.75, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HD 207496 3.34 light-years
- HIP 110719 4.08 light-years
- HIP 110712 4.11 light-years
- HIP 107022 6.78 light-years
- WISEA J212510.91-730758.8 7.02 light-years
- HD 199509 9.62 light-years
- Gl 818.1B 10.6 light-years
- Gl 818.1A 10.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.