Star · M4V
2MASSW J1841086+311727
2MASSW J1841086+311727 is a main-sequence star of spectral type M4V in the constellation Lyra, 137.0 light-years from the Sun.
| Constellation | Lyra |
|---|---|
| Distance | 137.0 light-years (42.0 pc) |
| Apparent magnitude | magnitude 21.66 |
| Absolute magnitude | magnitude 18.54 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 6.01 × 10⁻⁵ L☉ |
| Radius | 0.0292 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 18h 41m 08.6s |
| Declination (J2000) | +31° 17′ 28″ |
| Space velocity (relative to the Sun) | 14.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.66. Visible from the whole Northern Hemisphere and south to latitude 59° S. North of latitude 59° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1889. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around 2MASSW J1841086+311727, the Sun would look like a star of magnitude 7.95, in the direction where our sky has the constellation Canis Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 93843 14.9 light-years
- HIP 89408 14.9 light-years
- 17 Lyr 15.0 light-years
- HIP 90190 15.5 light-years
- HD 178911 B 16.2 light-years
- HIP 92916 18.8 light-years
- HIP 94290 19.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.