Star · G2/G3
HD 81040
HD 81040 is a main-sequence star of spectral type G2/G3 in the constellation Leo, 112.2 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 46076 |
|---|---|
| Constellation | Leo |
| Distance | 112.2 light-years (34.4 pc) |
| Apparent magnitude | magnitude 7.72 |
| Absolute magnitude | magnitude 5.04 |
| Spectral type | G2/G3 |
| Surface temperature | 5,760 K |
| Luminosity | 0.838 L☉ |
| Radius | 0.91 R☉ |
| Mass | 0.99 M☉ |
| Age | 1.8 billion years |
| Metallicity [Fe/H] | -0.04 |
| Right ascension (J2000) | 9h 23m 47.1s |
| Declination (J2000) | +20° 21′ 52″ |
| Space velocity (relative to the Sun) | 55.4 km/s |
In the sky
Too faint for the naked eye (magnitude 7.72); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 70° S. North of latitude 70° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1914. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
The Sun seen from there
From a planet around HD 81040, the Sun would look like a star of magnitude 7.51, in the direction where our sky has the constellation Capricornus. It would be invisible to the naked eye.
Planets
- HD 81040 b 1,000-day orbit · 12.6 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 46018 4.01 light-years
- HIP 46478 10.5 light-years
- HIP 44259 11.5 light-years
- SDSS J090948.13+194043.9 11.9 light-years
- HIP 47261 13.6 light-years
- HIP 44920 15.3 light-years
- 2MASSI J0856479+223518 15.6 light-years
- 2MASSW J0913032+184150 15.6 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.