HD 65216
| HD 65216 | |
|---|---|
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|
| Constellation | Andromeda |
| Right ascension | 07 h 53 m 41.3 s |
| declination | −63 ° 38 ′ 50 ″ |
|
Overall apparent visual brightness |
8.0 likes |
| Known exoplanets | 1 |
| Astrometry | |
| Radial velocity | (+42.5 ± 0.3) km / s |
| parallax | (28.11 ± 0.59) mas |
| distance | (116 ± 2) ly (35.6 ± 0.7) pc |
| Angular distance | A-BC: 7 ″ BC: 0 ″, 17th |
| Proper movement : | |
| Rec. Share: | approx. −123 mas / a |
| Dec. portion: | approx. +146 mas / a |
| Individual data | |
| Spectral classes | A: G5 V B: approx. M7 to M8 C: approx. L2 to L3 |
| Crowds | A: approx. 0.9 M ☉ B: approx. 0.09 M ☉ C: approx. 0.08 M ☉ |
| Effective temperature | A: (5666 ± 31) K |
| Surface gravity acceleration |
A: log (g) = (4.53 ± 0.09) cm / s 2 |
| Metallicity | A: [Fe / H] = −0.12 |
| Designations and catalog entries | |
| CD −63 ° 359 • HD 65216 • HIP 38558 • SAO 250002 • TYC 8915-2808-1 • WDS 07537-6339 | |
HD 65216 is a star system in the Carina constellation, almost 120 light years from Earth, with an apparent visual magnitude of 8.0 mag.
The main component of the system ( HD 65216 A ) is a main sequence star of the spectral class G5, which is accompanied by a close double star system at an angular distance of 7 arc seconds (projected around 250 astronomical units). The components of the accompanying system, HD 65216 B and HD 65216 C , are two low-mass M and L dwarfs that are separated from one another by 0.17 arc seconds (approx. 6 AU).
The main component is also orbited by an extrasolar planet called HD 65216 b . The companion has an orbital period of around 600 days, has a minimum mass m · sin (i) of 1.2 Jupiter masses and moves on an eccentric orbit (e = 0.41) with a major semi-axis of 1.4 AU.