|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
570 million years
|
|
gptkbp:apparentMagnitude
|
2.12
-0.07
|
|
gptkbp:catalogueNumber
|
gptkb:2MASS_J03081013+4057203
gptkb:AAVSO_0257+40
gptkb:ADS_2362
gptkb:BD+40_673
gptkb:GC_3728
gptkb:GSC_02831-02187
gptkb:HD_19356
gptkb:HIP_14576
gptkb:HR_936
gptkb:SAO_38592
gptkb:TYC_2831-2187-1
gptkb:WDS_J03082+4008
gptkb:FK5_111
|
|
gptkbp:component
|
gptkb:Algol_A
gptkb:Algol_B
gptkb:Algol_C
|
|
gptkbp:culturalSignificance
|
associated with misfortune in astrology
|
|
gptkbp:declination
|
+40° 57′ 20.3284″
|
|
gptkbp:diameter
|
1.73 solar radii (Algol C)
2.73 solar radii (Algol A)
3.43 solar radii (Algol B)
|
|
gptkbp:discoveredBy
|
gptkb:John_Goodricke
|
|
gptkbp:discoveredIn
|
1782
|
|
gptkbp:distanceFromEarth
|
92.8 light years
|
|
gptkbp:eccentricity
|
0.015
|
|
gptkbp:hasExoplanet
|
no
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Algol
|
|
gptkbp:inclination
|
81.4°
|
|
gptkbp:locatedIn
|
gptkb:constellation_Perseus
|
|
gptkbp:luminosity
|
10 L☉ (Algol C)
4.5 L☉ (Algol B)
98 L☉ (Algol A)
|
|
gptkbp:mass
|
0.81 solar masses (Algol B)
1.76 solar masses (Algol C)
3.17 solar masses (Algol A)
|
|
gptkbp:metallicity
|
−0.15
|
|
gptkbp:nameOrigin
|
Arabic (al-ghūl, 'the ghoul')
|
|
gptkbp:notableFor
|
first known eclipsing binary
prototype of Algol variable stars
|
|
gptkbp:otherName
|
gptkb:Beta_Persei
|
|
gptkbp:parallax
|
35.40 mas
|
|
gptkbp:period
|
2.867 days
|
|
gptkbp:properMotionRA
|
-1.93 mas/yr
2.43 mas/yr
|
|
gptkbp:rightAscension
|
03h 08m 10.13299s
|
|
gptkbp:spectralType
|
A7m
B8V
K0IV
|
|
gptkbp:variableType
|
binary star system
|
|
gptkbp:bfsParent
|
gptkb:binary_stars
|
|
gptkbp:bfsLayer
|
5
|