|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:alsoKnownAs
|
gptkb:Beta_Persei
|
|
gptkbp:apparentMagnitude
|
2.12 to 3.39
|
|
gptkbp:catalogueNumber
|
gptkb:ADS_2362
gptkb:BD+40_673
gptkb:GC_3728
gptkb:HD_19356
gptkb:HIP_14576
gptkb:HR_936
gptkb:SAO_38592
gptkb:FK5_111
gptkb:WDS_J03082+4057
|
|
gptkbp:contains
|
gptkb:Algol_A
gptkb:Algol_B
gptkb:Algol_C
|
|
gptkbp:culturalSignificance
|
associated with misfortune in astrology
known as 'Demon Star'
|
|
gptkbp:declination
|
+40° 57′ 20.3280″
|
|
gptkbp:discoveredBy
|
gptkb:John_Goodricke
|
|
gptkbp:discoveredIn
|
1783
|
|
gptkbp:distanceFromEarth
|
about 90 light years
|
|
gptkbp:hasAbsoluteMagnitude
|
-0.07
|
|
gptkbp:hasTraditionalName
|
gptkb:Algol
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Algol star system
|
|
gptkbp:isEclipsingBinary
|
true
|
|
gptkbp:locatedIn
|
gptkb:Perseus_constellation
|
|
gptkbp:massOfPrimary
|
3.17 solar masses
|
|
gptkbp:massOfSecondary
|
0.81 solar masses
|
|
gptkbp:massOfTertiary
|
1.76 solar masses
|
|
gptkbp:nameOrigin
|
Arabic (al-ghūl, 'the ghoul')
|
|
gptkbp:notableFor
|
first known eclipsing binary
prototype of Algol variable stars
|
|
gptkbp:orbitalPeriodPrimarySecondary
|
2.867 days
|
|
gptkbp:orbitalPeriodTertiary
|
1.86 years
|
|
gptkbp:parallax
|
35.43 mas
|
|
gptkbp:partOf
|
gptkb:Perseus_OB2_association
|
|
gptkbp:periodOfVariability
|
2.867 days
|
|
gptkbp:properMotionRA
|
2.43 mas/yr
-1.95 mas/yr
|
|
gptkbp:radialVelocity
|
+4.0 km/s
|
|
gptkbp:rightAscension
|
03h 08m 10.13221s
|
|
gptkbp:spectralType
|
B8V + K0IV + A7m
|
|
gptkbp:variableStar
|
gptkb:Algol_variable
|
|
gptkbp:visibleToNakedEye
|
true
|
|
gptkbp:bfsParent
|
gptkb:Phantasy_Star_IV
gptkb:Phantasy_Star_II
|
|
gptkbp:bfsLayer
|
7
|