|
gptkbp:instanceOf
|
gptkb:star
binary star system
|
|
gptkbp:apparentMagnitude
|
3.28
-2.4
|
|
gptkbp:BayerDesignation
|
gptkb:η_Geminorum
|
|
gptkbp:catalogueNumber
|
gptkb:HD_47105
gptkb:HR_2216
gptkb:HIP_31681
ADS 4112
BD+23 1299
SAO 78998
WDS J06149+2230
|
|
gptkbp:colorIndexB-V
|
+1.60
+1.97
|
|
gptkbp:companionMagnitude
|
6.2
|
|
gptkbp:component
|
Eta Geminorum A
|
|
gptkbp:constellation
|
gptkb:Gemini
|
|
gptkbp:declination
|
+22° 30′ 24″
|
|
gptkbp:diameter
|
about 100 solar radii
|
|
gptkbp:discoveredBy
|
gptkb:John_Flamsteed
|
|
gptkbp:distanceFromEarth
|
350 light years
|
|
gptkbp:eclipticLatitude
|
+1.1°
93.2°
|
|
gptkbp:evolutionaryStage
|
asymptotic giant branch
|
|
gptkbp:hasCompanion
|
gptkb:Eta_Geminorum_B
|
|
gptkbp:hasOpticalCompanion
|
gptkb:Eta_Geminorum_B
|
|
gptkbp:hasTraditionalName
|
gptkb:Propus
Tejat Prior
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Eta Geminorum
|
|
gptkbp:isDoubleStar
|
true
|
|
gptkbp:isRedGiant
|
true
|
|
gptkbp:luminosity
|
about 1550 times Sun
|
|
gptkbp:mass
|
2.5 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] ≈ 0.0
|
|
gptkbp:otherName
|
gptkb:Propus
Tejat Prior
|
|
gptkbp:parallax
|
9.29 mas
|
|
gptkbp:partOf
|
gptkb:Gemini_constellation
|
|
gptkbp:properMotionRA
|
-13.37 mas/yr
-8.34 mas/yr
|
|
gptkbp:radialVelocity
|
+4.0 km/s
|
|
gptkbp:rightAscension
|
06h 14m 52.7s
|
|
gptkbp:separationFromCompanion
|
1.6 arcseconds
|
|
gptkbp:spectralType
|
M3III
|
|
gptkbp:temperature
|
3,500 K
|
|
gptkbp:variabilityPeriod
|
234 days
|
|
gptkbp:variableStar
|
true
|
|
gptkbp:variableType
|
semiregular variable
|
|
gptkbp:visibleToNakedEye
|
true
|
|
gptkbp:bfsParent
|
gptkb:Propus
|
|
gptkbp:bfsLayer
|
7
|