Star · M0.5 V
GJ 720 A
GJ 720 A is a main-sequence star of spectral type M0.5 V in the constellation Lyra, 50.8 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | Gl 720A · HIP 91128 |
|---|---|
| Constellation | Lyra |
| Distance | 50.8 light-years (15.6 pc) |
| Apparent magnitude | magnitude 9.84 |
| Absolute magnitude | magnitude 8.88 |
| Spectral type | M0.5 V |
| Surface temperature | 3,840 K |
| Luminosity | 0.0607 L☉ |
| Radius | 0.56 R☉ |
| Mass | 0.57 M☉ |
| Metallicity [Fe/H] | -0.14 |
| Right ascension (J2000) | 18h 35m 18.3s |
| Declination (J2000) | +45° 44′ 39″ |
| Space velocity (relative to the Sun) | 53.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.84. Visible from the whole Northern Hemisphere and south to latitude 44° S. North of latitude 44° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 901 thousand years.
The Sun seen from there
From a planet around GJ 720 A, the Sun would look like a star of magnitude 5.79, in the direction where our sky has the constellation Puppis. It would be visible to the naked eye.
Planets
- GJ 720 A b 19.5-day orbit · 3.77 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 720B 0.03 light-years
- 2MASS J19010601+4718136 4.62 light-years
- WISEPA J190624.75+450808.2 4.87 light-years
- GJ 4073 5.97 light-years
- Gl 719 6.35 light-years
- 2MASSI J1807159+501531 6.40 light-years
- Gl 709 6.84 light-years
- GJ 4040 7.53 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.