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Statements

Subject Item
dbr:Chinese_star_names
dbo:wikiPageWikiLink
dbr:20_Persei
Subject Item
dbr:20_Persei
rdf:type
yago:Star109444100 owl:Thing dbo:Star dbo:Place schema:Place yago:Object100002684 dbo:Location dbo:CelestialBody yago:WikicatFlamsteedObjects yago:PhysicalEntity100001930 yago:Whole100003553 yago:WikicatF-typeMain-sequenceStars yago:CelestialBody109239740 yago:NaturalObject100019128
rdfs:label
20 Persei 大陵增十五 20 Persei
rdfs:comment
英仙座20，又名BD+37 655，HD 17904、SAO 55975、HR 855，是英仙座的一颗恒星，视星等为5.33，位于銀經147.81，銀緯-18.55，其B1900.0坐标为赤經2h 47m 23.7s，赤緯+37° -18.55′ 48″。 20 Persei is a visual binary star in the northern constellation of Perseus, a few degrees from Pi Persei. It is visible to the naked eye as a dim, yellow-white hued point of light with a combined apparent visual magnitude of 5.343. The system is located around 230 light-years (71 pc) away from the Sun, based on its parallax. It is receding from the Earth with a heliocentric radial velocity of +6 km/s. 20 Persei, som är stjärnans Flamsteed-beteckning, är en visuell dubbelstjärna belägen i den södra delen av stjärnbilden Perseus. Den har en högsta skenbar magnitud på ca 5,34 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 14,2 mas, beräknas den befinna sig på ett avstånd på ca 230 ljusår (ca 71 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet av ca 6 km/s.
foaf:name
20 Persei
dcterms:subject
dbc:F-type_main-sequence_stars dbc:Henry_Draper_Catalogue_objects dbc:Perseus_(constellation) dbc:Hipparcos_objects dbc:Flamsteed_objects dbc:Binary_stars dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects
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41506957
dbo:wikiPageRevisionID
1079512059
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dbp:appmagV
5.343
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0.2224
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+0.42
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F6V
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20
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dbr:Perseus_(constellation)
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0.756
dbp:epoch
dbr:J2000
dbp:inclination
120.48
dbp:mass
1.5
dbp:node
26.62
dbp:pError
0.72
dbp:parallax
14.15
dbp:periarg
265.54
dbp:periastron
2450255.5
dbp:propMoDec
-78.90000000000001
dbp:propMoRa
46.79
dbp:radialV
5.8
dbp:uB
+0.03
dbo:abstract
英仙座20，又名BD+37 655，HD 17904、SAO 55975、HR 855，是英仙座的一颗恒星，视星等为5.33，位于銀經147.81，銀緯-18.55，其B1900.0坐标为赤經2h 47m 23.7s，赤緯+37° -18.55′ 48″。 20 Persei is a visual binary star in the northern constellation of Perseus, a few degrees from Pi Persei. It is visible to the naked eye as a dim, yellow-white hued point of light with a combined apparent visual magnitude of 5.343. The system is located around 230 light-years (71 pc) away from the Sun, based on its parallax. It is receding from the Earth with a heliocentric radial velocity of +6 km/s. The orbit of the two stars has been calculated from the secondary changing its position relative to the primary. The two orbit each other every 31.6 years with an angular semimajor axis of 0.22 arcseconds and an eccentricity of 0.7560. The combined spectrum of 20 Persei matches that of an F-type main-sequence star, and the two stars are thought to have equal masses, 1.5 times that of the Sun. A ninth-magnitude star, designated 20 Persei C, may be associated with the pair. 20 Persei, som är stjärnans Flamsteed-beteckning, är en visuell dubbelstjärna belägen i den södra delen av stjärnbilden Perseus. Den har en högsta skenbar magnitud på ca 5,34 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 14,2 mas, beräknas den befinna sig på ett avstånd på ca 230 ljusår (ca 71 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet av ca 6 km/s.
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dbr:List_of_stars_in_Perseus
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dbr:Perseus_in_Chinese_astronomy
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