HD 128621 (B)

URI: https://gptkb.org/entity/HD_128621_(B)
GPTKB entity
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
https://www.w3.org/2000/01/rdf-schema#label HD 128621 (B)