Star · M4V
2MASSW J1439409+182637
2MASSW J1439409+182637 is a main-sequence star of spectral type M4V in the constellation Boötes, 205.5 light-years from the Sun.
| Constellation | Boötes |
|---|---|
| Distance | 205.5 light-years (63.0 pc) |
| Apparent magnitude | magnitude 21.72 |
| Absolute magnitude | magnitude 17.72 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.28 × 10⁻⁴ L☉ |
| Radius | 0.0426 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 14h 39m 40.9s |
| Declination (J2000) | +18° 26′ 37″ |
| Space velocity (relative to the Sun) | 7.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.72. Visible from the whole Northern Hemisphere and south to latitude 72° S. North of latitude 72° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1821. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
The Sun seen from there
From a planet around 2MASSW J1439409+182637, the Sun would look like a star of magnitude 8.83, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 71588 11.2 light-years
- HIP 71938 14.9 light-years
- HIP 71931 15.8 light-years
- HIP 72365 16.4 light-years
- HIP 71819 17.4 light-years
- HIP 73321 17.4 light-years
- HIP 71322 19.2 light-years
- HIP 70193 19.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.