HD 190647
|
Stern HD 190647 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| AladinLite | |||||||||
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|||||||||
| Constellation | Sagittarius | ||||||||
| Right ascension | 20 h 07 m 19.67 s | ||||||||
| declination | -35 ° 32 ′ 19.1 ″ | ||||||||
| Apparent brightness | 7.78 likes | ||||||||
| Typing | |||||||||
| Known exoplanets | 1 | ||||||||
| B − V color index | (+0.743 ± 0.002) | ||||||||
| Spectral class | G5 V | ||||||||
| Astrometry | |||||||||
| Radial velocity | (−40.3 ± 0.3) km / s | ||||||||
| parallax | (17.46 ± 0.81) mas | ||||||||
| distance | (187 ± 9) ly (57.3 ± 2.7) pc |
||||||||
| Visual absolute brightness M vis | +4.0 mag | ||||||||
| Proper movement | |||||||||
| Rec. Share: | (−28.38 ± 0.90) mas / a | ||||||||
| Dec. portion: | (−207.57 ± 0.83) mas / a | ||||||||
| Physical Properties | |||||||||
| Dimensions | 1.1 M ☉ | ||||||||
| Effective temperature | approx. 5600 K | ||||||||
| Metallicity [Fe / H] | 0.24 ± 0.03 | ||||||||
| Age | > 2 billion a | ||||||||
|
Other names and catalog entries |
|||||||||
|
|||||||||
| annotation | |||||||||
|
|||||||||
HD 190647 is a main sequence star of spectral class G5 in Sagittarius, about 190 light years from Earth . It has an apparent magnitude of 7.78 mag. In 2007 Dominique Naef discovered an extrasolar planet orbiting this star. This is called HD 190647 b .