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gptkbp:instanceOf
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gptkb:star
|
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gptkbp:alsoKnownAs
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gptkb:61_Cygni
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gptkbp:apparentMagnitude
|
5.20
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gptkbp:catalogue
|
gptkb:Gliese_Catalogue
gptkb:Henry_Draper_Catalogue
gptkb:Hipparcos_Catalogue
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gptkbp:catalogueNumber
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gptkb:HD_201092_(61_Cygni_B)
gptkb:HIP_104214_(61_Cygni_A)
gptkb:HIP_104217_(61_Cygni_B)
Gliese 820 (A and B)
HD 201091 (61 Cygni A)
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gptkbp:component
|
gptkb:61_Cygni_A
gptkb:61_Cygni_B
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gptkbp:constellation
|
gptkb:Cygnus
|
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gptkbp:declination
|
+38° 44′ 57.9″
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gptkbp:diameter
|
0.595 R☉ (61 Cygni B)
0.665 R☉ (61 Cygni A)
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gptkbp:discoveredBy
|
gptkb:Giuseppe_Piazzi
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gptkbp:discoveredIn
|
1792
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gptkbp:distanceFromEarth
|
11.4 light years
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|
https://www.w3.org/2000/01/rdf-schema#label
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ADS 14636
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gptkbp:luminosity
|
0.085 L☉ (61 Cygni B)
0.15 L☉ (61 Cygni A)
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gptkbp:mass
|
0.63 M☉ (61 Cygni B)
0.70 M☉ (61 Cygni A)
|
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gptkbp:metallicity
|
-0.20 (61 Cygni A)
-0.27 (61 Cygni B)
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gptkbp:nearestStarSystem
|
gptkb:Ross_248
|
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gptkbp:nearestStarSystemDistance
|
3.3 light years (to Ross 248)
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gptkbp:notableFor
|
high proper motion
|
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gptkbp:orbitType
|
659 years
|
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gptkbp:parallax
|
286.82 mas
|
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gptkbp:properMotionRA
|
5.2 arcsec/year
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|
gptkbp:rightAscension
|
21h 06m 53.94s
|
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gptkbp:separates
|
about 84 AU
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|
gptkbp:spectralType
|
gptkb:K5V_(61_Cygni_A)
gptkb:K7V_(61_Cygni_B)
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gptkbp:variableType
|
BY Draconis variable (61 Cygni A)
BY Draconis variable (61 Cygni B)
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gptkbp:bfsParent
|
gptkb:Zeta_Cygni
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gptkbp:bfsLayer
|
7
|