Star · K9V
SR 12 AB
SR 12 AB is a main-sequence star of spectral type K9V in the constellation Ophiuchus, 366.3 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Ophiuchus |
|---|---|
| Distance | 366.3 light-years (112.3 pc) |
| Apparent magnitude | magnitude 13.36 |
| Absolute magnitude | magnitude 8.11 |
| Spectral type | K9V |
| Surface temperature | 3,830 K |
| Luminosity | 0.236 L☉ |
| Radius | 1.1 R☉ |
| Mass | 0.644 M☉ |
| Age | 0.0 billion years |
| Right ascension (J2000) | 16h 27m 19.5s |
| Declination (J2000) | −24° 41′ 41″ |
| Space velocity (relative to the Sun) | 14.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.36. Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° S 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 1660. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.5 million years.
The Sun seen from there
From a planet around SR 12 AB, the Sun would look like a star of magnitude 10.08, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Planets
- SR 12 AB c 12.3 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.