Star · K9V
2MASS J18392735+4424484
2MASS J18392735+4424484 is a main-sequence star of spectral type K9V in the constellation Lyra, 120.3 light-years from the Sun.
| Constellation | Lyra |
|---|---|
| Distance | 120.3 light-years (36.9 pc) |
| Apparent magnitude | magnitude 21.42 |
| Absolute magnitude | magnitude 18.59 |
| Spectral type | K9V |
| Surface temperature | 3,760 K |
| Luminosity | 1.21 × 10⁻⁵ L☉ |
| Radius | 0.00821 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 18h 39m 27.4s |
| Declination (J2000) | +44° 24′ 51″ |
| Space velocity (relative to the Sun) | 30.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.42. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° 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 1906. 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 J18392735+4424484, the Sun would look like a star of magnitude 7.66, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 90586 4.04 light-years
- HIP 91905 4.06 light-years
- 16 Lyr 11.7 light-years
- HIP 93350 12.0 light-years
- HIP 92122 13.5 light-years
- HIP 89282 13.6 light-years
- PSO J284.7214+39.3189 14.2 light-years
- HIP 90061 15.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.