Star · M0.5
GJ 9689
GJ 9689 is a main-sequence star of spectral type M0.5 in the constellation Aquila, 100.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 99699 |
|---|---|
| Constellation | Aquila |
| Distance | 100.1 light-years (30.7 pc) |
| Apparent magnitude | magnitude 11.30 |
| Absolute magnitude | magnitude 8.87 |
| Spectral type | M0.5 |
| Surface temperature | 3,840 K |
| Luminosity | 0.0631 L☉ |
| Radius | 0.57 R☉ |
| Mass | 0.59 M☉ |
| Age | 8.9 billion years |
| Metallicity [Fe/H] | 0.05 |
| Right ascension (J2000) | 20h 13m 51.8s |
| Declination (J2000) | +13° 23′ 19″ |
| Space velocity (relative to the Sun) | 91.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.30. 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 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 1926. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around GJ 9689, the Sun would look like a star of magnitude 7.26, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- GJ 9689 b 18.3-day orbit · 3.07 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Rotanev 10.3 light-years
- TOI-5799 10.6 light-years
- κ Del 12.3 light-years
- HIP 101932 12.4 light-years
- HIP 120148 12.6 light-years
- HIP 99205 13.1 light-years
- 2MASS J20343769+0827009 14.5 light-years
- HIP 97779 15.1 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.