Star · M0V
2MASSW J0030438+313932
2MASSW J0030438+313932 is a main-sequence star of spectral type M0V in the constellation Andromeda, 147.1 light-years from the Sun.
| Constellation | Andromeda |
|---|---|
| Distance | 147.1 light-years (45.1 pc) |
| Apparent magnitude | magnitude 21.76 |
| Absolute magnitude | magnitude 18.49 |
| Spectral type | M0V |
| Surface temperature | 3,610 K |
| Luminosity | 1.66 × 10⁻⁵ L☉ |
| Radius | 0.0105 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 0h 30m 43.8s |
| Declination (J2000) | +31° 39′ 31″ |
| Space velocity (relative to the Sun) | 19.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.76. Visible from the whole Northern Hemisphere and south to latitude 58° S. North of latitude 58° 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 1879. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around 2MASSW J0030438+313932, the Sun would look like a star of magnitude 8.10, 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 2102 4.38 light-years
- HIP 3256 11.0 light-years
- σ And 15.9 light-years
- 2MASS J00150673+3006004 16.2 light-years
- HIP 118213 18.9 light-years
- HIP 1294 18.9 light-years
- HIP 4103 19.1 light-years
- HIP 2824 19.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.