Star · M9
Oph 11
Oph 11 is a main-sequence star of spectral type M9 in the constellation Scorpius, 444.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Scorpius |
|---|---|
| Distance | 444.1 light-years (136.2 pc) |
| Apparent magnitude | magnitude 19.21 |
| Absolute magnitude | magnitude 13.54 |
| Spectral type | M9 |
| Surface temperature | 2,380 K |
| Luminosity | 0.0017 L☉ |
| Radius | 0.233 R☉ |
| Mass | 0.016 M☉ |
| Age | 5.0 billion years |
| Right ascension (J2000) | 16h 22m 25.2s |
| Declination (J2000) | −24° 05′ 14″ |
| Space velocity (relative to the Sun) | 4.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 19.21. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° 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 1582. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.9 million years.
The Sun seen from there
From a planet around Oph 11, the Sun would look like a star of magnitude 10.50, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Planets
- Oph 11 b 7.30 × 10⁶-day orbit · 12.3 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.