Star · K0
BD+15 2940
BD+15 2940 is a giant star of spectral type K0 in the constellation Serpens, 1,329 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 78407 |
|---|---|
| Constellation | Serpens |
| Distance | 1,329 light-years (407.3 pc) |
| Apparent magnitude | magnitude 9.01 |
| Absolute magnitude | magnitude 0.96 |
| Spectral type | K0 |
| Surface temperature | 4,800 K |
| Luminosity | 102 L☉ |
| Radius | 14.7 R☉ |
| Mass | 1.1 M☉ |
| Age | 7.1 billion years |
| Metallicity [Fe/H] | 0.28 |
| Right ascension (J2000) | 16h 00m 22.9s |
| Declination (J2000) | +15° 32′ 49″ |
| Space velocity (relative to the Sun) | 93.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.01. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 697. 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 BD+15 2940, the Sun would look like a star of magnitude 12.88, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Planets
- BD+15 2940 b 137-day orbit · 13.7 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.