|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:apparentMagnitude
|
5.20
|
|
gptkbp:component
|
gptkb:61_Cygni_A
gptkb:61_Cygni_B
|
|
gptkbp:declination
|
+38° 44′ 57.9″
|
|
gptkbp:diameter
|
0.595 solar radii (B)
0.665 solar radii (A)
|
|
gptkbp:discoveredBy
|
gptkb:Giuseppe_Piazzi
|
|
gptkbp:discoveredIn
|
1792
|
|
gptkbp:distanceFromEarth
|
11.4 light years
|
|
gptkbp:locatedIn
|
gptkb:constellation_Cygnus
|
|
gptkbp:luminosity
|
0.085 solar luminosities (B)
0.15 solar luminosities (A)
|
|
gptkbp:mass
|
0.63 solar masses (B)
0.70 solar masses (A)
|
|
gptkbp:metallicity
|
-0.20 [Fe/H] (A)
-0.27 [Fe/H] (B)
|
|
gptkbp:notableFor
|
first star to have its distance measured by parallax
|
|
gptkbp:orbitType
|
659 years
|
|
gptkbp:otherName
|
gptkb:BD+38°4343
gptkb:Gliese_820
gptkb:HD_201091/201092
gptkb:HR_8083
|
|
gptkbp:parallax
|
286.82 mas
|
|
gptkbp:properMotionRA
|
5.2 arcseconds/year
|
|
gptkbp:rightAscension
|
21h 06m 53.94s
|
|
gptkbp:separates
|
84 AU
|
|
gptkbp:spectralType
|
gptkb:K5V_(61_Cygni_A)
gptkb:K7V_(61_Cygni_B)
|
|
gptkbp:variableStar
|
yes
|
|
gptkbp:variableType
|
gptkb:BY_Draconis
|
|
gptkbp:bfsParent
|
gptkb:Cygnus
gptkb:Flamsteed_designation
gptkb:Bessel's_star
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
61 Cygni
|