Star · M4V
2MASSW J1342236+175156
2MASSW J1342236+175156 is a main-sequence star of spectral type M4V in the constellation Boötes, 143.5 light-years from the Sun.
| Constellation | Boötes |
|---|---|
| Distance | 143.5 light-years (44.0 pc) |
| Apparent magnitude | magnitude 21.64 |
| Absolute magnitude | magnitude 18.42 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 6.71 × 10⁻⁵ L☉ |
| Radius | 0.0308 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 13h 42m 23.6s |
| Declination (J2000) | +17° 51′ 56″ |
| Space velocity (relative to the Sun) | 23.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.64. 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 1882. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.5 million years.
The Sun seen from there
From a planet around 2MASSW J1342236+175156, the Sun would look like a star of magnitude 8.05, 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):
- 2MASSW J1334062+194034 6.72 light-years
- HIP 67501 9.19 light-years
- HIP 67493 9.21 light-years
- ULAS J133502.11+150653.5 12.9 light-years
- SDSS J134203.11+134022.2 14.1 light-years
- HIP 66509 15.3 light-years
- HIP 65632 17.1 light-years
- HIP 68732 18.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.