|
gptkbp:instanceOf
|
gptkb:star
gptkb:variable_star
|
|
gptkbp:apparentMagnitude
|
3.48
-3.47
|
|
gptkbp:constellation
|
gptkb:Cepheus
|
|
gptkbp:declination
|
+58° 24′ 54.7″
|
|
gptkbp:diameter
|
44.5 solar radii
|
|
gptkbp:discoveredBy
|
gptkb:John_Goodricke
|
|
gptkbp:discoveredIn
|
1784
|
|
gptkbp:distanceFromEarth
|
887 light years
|
|
gptkbp:eponymOf
|
gptkb:Cepheid_variable_stars
|
|
gptkbp:hasCompanion
|
gptkb:Delta_Cephei_B
|
|
gptkbp:luminosity
|
2000 times solar luminosity
|
|
gptkbp:mass
|
4.5 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = -0.07
|
|
gptkbp:notableFor
|
prototype of Cepheid variable stars
|
|
gptkbp:otherName
|
gptkb:BD+57_2569
gptkb:HD_213306
gptkb:HIP_110991
gptkb:HR_8571
gptkb:SAO_34508
δ Cephei
|
|
gptkbp:parallax
|
3.68 mas
|
|
gptkbp:period
|
5.366 days
|
|
gptkbp:properMotionRA
|
16.41 mas/yr
3.55 mas/yr
|
|
gptkbp:radialVelocity
|
-16.8 km/s
|
|
gptkbp:rightAscension
|
22h 29m 10.27s
|
|
gptkbp:spectralType
|
F5Ib – G1Ib
|
|
gptkbp:temperature
|
5,500–6,800 K
|
|
gptkbp:variableRange
|
3.48–4.37
|
|
gptkbp:variableType
|
gptkb:Classical_Cepheid
|
|
gptkbp:bfsParent
|
gptkb:Classical_Cepheid
|
|
gptkbp:bfsLayer
|
8
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Delta Cepheid
|