Star · WD
NN Ser
NN Ser is a main-sequence star of spectral type WD in the constellation Serpens, 1,682 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Constellation | Serpens |
|---|---|
| Distance | 1,682 light-years (515.8 pc) |
| Apparent magnitude | magnitude 16.94 |
| Absolute magnitude | magnitude 8.38 |
| Spectral type | WD |
| Surface temperature | 57,000 K |
| Luminosity | 0.284 L☉ |
| Radius | 0.0377 R☉ |
| Mass | 0.535 M☉ |
| Right ascension (J2000) | 15h 52m 56.1s |
| Declination (J2000) | +12° 54′ 44″ |
| Space velocity (relative to the Sun) | 162.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.94. Visible from the whole Northern Hemisphere and south to latitude 77° S. North of latitude 77° 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 344. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 30 million years.
The Sun seen from there
From a planet around NN Ser, the Sun would look like a star of magnitude 13.39, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Planets
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.