Star · M4V
SIMP J10390264-2829293
SIMP J10390264-2829293 is a main-sequence star of spectral type M4V in the constellation Hydra, 97.8 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 97.8 light-years (30.0 pc) |
| Apparent magnitude | magnitude 24.19 |
| Absolute magnitude | magnitude 21.80 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.98 × 10⁻⁶ L☉ |
| Radius | 0.0065 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 39m 02.7s |
| Declination (J2000) | −28° 29′ 29″ |
| Space velocity (relative to the Sun) | 46.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 24.19. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1928. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around SIMP J10390264-2829293, the Sun would look like a star of magnitude 7.22, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 53114 7.82 light-years
- Macondo 9.98 light-years
- 2MASSW J1018588-290953 10.1 light-years
- HIP 53818 10.3 light-years
- HIP 53150 11.9 light-years
- PSO J160.0416-21.3281 12.2 light-years
- HIP 51443 13.1 light-years
- HIP 51928 13.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.