Star · M1.0 V
GJ 740
GJ 740 is a main-sequence star of spectral type M1.0 V in the constellation Serpens, 36.2 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | Gl 740 · HIP 93101 |
|---|---|
| Constellation | Serpens |
| Distance | 36.2 light-years (11.1 pc) |
| Apparent magnitude | magnitude 9.22 |
| Absolute magnitude | magnitude 8.99 |
| Spectral type | M1.0 V |
| Surface temperature | 3,910 K |
| Luminosity | 0.0622 L☉ |
| Radius | 0.56 R☉ |
| Mass | 0.58 M☉ |
| Metallicity [Fe/H] | 0.08 |
| Right ascension (J2000) | 18h 58m 00.2s |
| Declination (J2000) | +5° 54′ 29″ |
| Space velocity (relative to the Sun) | 65.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.22. Visible from the whole Northern Hemisphere and south to latitude 84° S. 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 1990. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 643 thousand years.
The Sun seen from there
From a planet around GJ 740, the Sun would look like a star of magnitude 5.06, in the direction where our sky has the constellation Monoceros. It would be visible to the naked eye.
Planets
- GJ 740 b 2.38-day orbit · 1.53 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 735 1.63 light-years
- GJ 1236 4.08 light-years
- 2MASS J19251275+0700362 4.37 light-years
- GJ 4071 5.57 light-years
- Gl 748 6.17 light-years
- GJ 4065 6.85 light-years
- GJ 1232 7.83 light-years
- 2MASS J18212815+1414010 9.13 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.