Statements (31)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:star
|
| gptkbp:alsoKnownAs |
gptkb:Alpha_Centauri_B
|
| gptkbp:apparentMagnitude |
1.33
6.03 |
| gptkbp:catalogueNumber |
gptkb:Gliese_559_B
gptkb:HD_128621 gptkb:HIP_71681 gptkb:HR_5460 |
| gptkbp:constellation |
gptkb:Centaurus
|
| gptkbp:containsPlanet |
no confirmed planets
|
| gptkbp:declination |
-60° 50′ 02″
|
| gptkbp:diameter |
0.863 solar radii
|
| gptkbp:discoveredIn |
1839
|
| gptkbp:distanceFromEarth |
4.37 light years
|
| gptkbp:eccentricity |
0.5179
|
| gptkbp:hasCompanion |
gptkb:HD_128620_(Alpha_Centauri_A)
Proxima Centauri (Alpha Centauri C) |
| gptkbp:luminosity |
0.445 solar luminosities
|
| gptkbp:mass |
0.907 solar masses
|
| gptkbp:metallicity |
[Fe/H] = +0.23
|
| gptkbp:orbitType |
79.91 years
|
| gptkbp:parallax |
747.17 mas
|
| gptkbp:partOf |
gptkb:Alpha_Centauri_system
|
| gptkbp:properMotionRA |
+481.84 mas/yr
-3678.19 mas/yr |
| gptkbp:rightAscension |
14h 39m 36.5s
|
| gptkbp:spectralType |
K1V
|
| gptkbp:temperature |
5230 K
|
| gptkbp:bfsParent |
gptkb:Alpha_Centauri
|
| gptkbp:bfsLayer |
6
|
| http://www.w3.org/2000/01/rdf-schema#label |
HD 128621 (B)
|