Star · M4V
2MASS J21163374-0729200
2MASS J21163374-0729200 is a main-sequence star of spectral type M4V in the constellation Aquarius, 117.4 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 117.4 light-years (36.0 pc) |
| Apparent magnitude | magnitude 22.70 |
| Absolute magnitude | magnitude 19.92 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.69 × 10⁻⁵ L☉ |
| Radius | 0.0155 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 16m 33.7s |
| Declination (J2000) | −7° 29′ 20″ |
| Space velocity (relative to the Sun) | 24.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.70. Visible from the whole Southern Hemisphere and north to latitude 83° N. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1909. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around 2MASS J21163374-0729200, the Sun would look like a star of magnitude 7.61, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 105204 4.26 light-years
- HIP 104610 5.18 light-years
- HIP 103699 9.92 light-years
- HIP 106007 10.2 light-years
- 2MASSI J2107316-030733 13.1 light-years
- PSO J319.7576-13.0982 14.8 light-years
- HIP 106825 15.6 light-years
- HIP 103581 15.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.