HD 170469
|
Star HD 170469 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| AladinLite | |||||||||
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|||||||||
| Constellation | Snake bearer | ||||||||
| Right ascension | 18 h 29 m 10.98 s | ||||||||
| declination | + 11 ° 41 ′ 43.8 ″ | ||||||||
| Apparent brightness | 8.21 likes | ||||||||
| Typing | |||||||||
| Known exoplanets | 1 | ||||||||
| Spectral class | G5 | ||||||||
| Astrometry | |||||||||
| Radial velocity | (−59.6 ± 0.2) km / s | ||||||||
| parallax | (15.94 ± 1.03) mas | ||||||||
| distance | (205 ± 13) ly (62.7 ± 4.1) pc |
||||||||
| Visual absolute brightness M vis | approx. +4.2 mag | ||||||||
| Proper movement | |||||||||
| Rec. Share: | (−48.14 ± 0.97) mas / a | ||||||||
| Dec. portion: | (−18.32 ± 0.82) mas / a | ||||||||
| Physical Properties | |||||||||
| Dimensions | 1.14 M ☉ | ||||||||
| radius | (1.22 ± 0.07) R ☉ | ||||||||
| Effective temperature | 5810 K | ||||||||
| Metallicity [Fe / H] | 0.3 | ||||||||
| Age | approx. 7 billion a | ||||||||
|
Other names and catalog entries |
|||||||||
|
|||||||||
HD 170469 is a yellow subgiant in the constellation Ophiuchus, about 212 light years away . It has an apparent magnitude of 8.2 mag. The star is accompanied by an exoplanet with the systematic name HD 170469 b with a period of 1087 days, the major semiaxis of the orbit measuring approx. 2 astronomical units . The discovery of the extrasolar planet was made using the radial velocity method and was made in 2007 by Fischer et al. published.