Star · B4V
2MASS J19383260+4603591
2MASS J19383260+4603591 is a main-sequence star of spectral type B4V in the constellation Cygnus, 1,336 light-years from the Sun. It is orbited by 3 confirmed exoplanet(s).
| Constellation | Cygnus |
|---|---|
| Distance | 1,336 light-years (409.7 pc) |
| Apparent magnitude | magnitude 12.59 |
| Absolute magnitude | magnitude 4.53 |
| Spectral type | B4V |
| Surface temperature | 29,560 K |
| Luminosity | 28.2 L☉ |
| Radius | 0.203 R☉ |
| Mass | 0.48 M☉ |
| Metallicity [Fe/H] | -0.09 |
| Right ascension (J2000) | 19h 38m 32.6s |
| Declination (J2000) | +46° 03′ 59″ |
| Space velocity (relative to the Sun) | 13.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.59. Visible from the whole Northern Hemisphere and south to latitude 44° S. North of latitude 44° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 690. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 24 million years.
The Sun seen from there
From a planet around 2MASS J19383260+4603591, the Sun would look like a star of magnitude 12.89, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- 2MASS J19383260+4603591 b 406-day orbit · 13.4 R⊕
- Kepler-451 d 43-day orbit · 13.5 R⊕
- Kepler-451 c 1,460-day orbit · 13.5 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.