HD 40979
|
Stern HD 40979 |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AladinLite | |||||||||||
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|||||||||||
| Constellation | Carter | ||||||||||
| Right ascension | 06 h 04 m 29.9 s | ||||||||||
| declination | + 44 ° 15 ′ 38 ″ | ||||||||||
| Apparent brightness | 6.74 likes | ||||||||||
| Typing | |||||||||||
| Known exoplanets | 1 | ||||||||||
| B − V color index | +0.565 | ||||||||||
| Spectral class | F8 | ||||||||||
| Astrometry | |||||||||||
| Radial velocity | (+32.5 ± 0.2) km / s | ||||||||||
| parallax | (30.20 ± 0.44) mas | ||||||||||
| distance | (108 ± 2) ly (33.1 ± 0.5) pc |
||||||||||
| Proper movement | |||||||||||
| Rec. Share: | (+93.85 ± 0.47) mas / a | ||||||||||
| Dec. portion: | (−152.79 ± 0.23) mas / a | ||||||||||
| Physical Properties | |||||||||||
| Dimensions | 1.1 M ☉ | ||||||||||
| radius | 1.2 R ☉ | ||||||||||
| Luminosity |
6 L ☉ |
||||||||||
| Effective temperature | 5929 K | ||||||||||
| Metallicity [Fe / H] | +0.19 | ||||||||||
|
Other names and catalog entries |
|||||||||||
|
|||||||||||
HD 40979 is a sun-like star in the constellation Auriga , about 108 light-years away, which is orbited by an exoplanet named HD 40979 b . It has an apparent magnitude of 6.74 mag.
The companion HD 40979 b has an orbital period of around 264 days, a major semi-axis of approx. 0.9 astronomical units and a minimum mass of approx. 3.8 Jupiter masses (approx. 1200 earth masses ). The property was opened in 2002 by Fischer et al. discovered using the radial velocity method.
Web links
Individual evidence
- ↑ a b c Hipparcos catalog (ESA 1997)
- ↑ Pulkovo radial velocities for 35493 HIP stars
- ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)