HD 81040
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo |
| Right ascension | 09h 23m 47.0873s |
| Declination | +20° 21′ 52.034″ |
| Apparent magnitude (V) | +7.74 |
| Distance | 106.2 ly (32.56 pc) |
| Spectral type | G2/G3 |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 81040 is a star in the constellation of Leo. It is G-type yellow dwarf like our Sun.
The Sun dwarfs HD 81040 in terms of physical characteristics. The age of the star is not precisely known; the ELODIE spectrograph suggested 0.8 Gyr and found it to have a young dust disk. Later measurements by modelling chromosperic activity suggested an age of 4.18 Gyr.
Planetary system
On November 24, 2005, a superjovian planet was announced by Sozzetti.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >6.86 ± 0.71 MJ | 1.94 | 1001.7 ± 7.0 | 0.526 ± 0.042 | — | — |
See also
- List of extrasolar planets
References
- ↑ Sozzetti, A. et al. (2006). "A massive planet to the young disc star HD 81040". Astronomy and Astrophysics 449 (1): 417–424. arXiv:astro-ph/0511679. Bibcode:2006A&A...449..417S. doi:10.1051/0004-6361:20054303.
External links
Coordinates: 
09h 23m 47.0873s, +20° 21′ 52.034″
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