About: HD 151613

An Entity of Type: star, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

HD 151613 is a binary star system in the northern circumpolar constellation of Draco. It is visible to the naked eye with an apparent visual magnitude of 4.84. The distance to this star, as estimated from its annual parallax shift of 39.3 mas, is 83 light years. It is moving closer to the Earth with a heliocentric radial velocity of −2 km/s.

Property	Value
dbo:abstract	HD 151613 is a binary star system in the northern circumpolar constellation of Draco. It is visible to the naked eye with an apparent visual magnitude of 4.84. The distance to this star, as estimated from its annual parallax shift of 39.3 mas, is 83 light years. It is moving closer to the Earth with a heliocentric radial velocity of −2 km/s. This is a single-lined spectroscopic binary system with an orbital period of 363.57 days and an eccentricity of 0.35. The pair were resolved through speckle interferometry in 1977, showing an angular separation of 0.041″. They were later resolved in 1981 with a separation of 0.047″, but were unresolved during 20 other attempts between 1976–1991. The system is a source of X-ray emission. The visible component is an F-type main-sequence star with a stellar classification of F2 V. It is around 2.3 billion years old with a projected rotational velocity of 48 km/s. (en) HD 151613 är en dubbelstjärna i den södra delen av stjärnbilden Draken. Den har en kombinerad skenbar magnitud av ca 4,84 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 39,3 mas, beräknas den befinna sig på ett avstånd på ca 83 ljusår (ca 25 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca -2 km/s. (sv) HD 151613，又名BD+57 1702，SAO 30076、HR 6237，是一颗恒星，视星等为4.85，位于銀經85.67，銀緯39.53，其B1900.0坐标为赤經16h 43m 23.9s，赤緯+56° 39.53′ 38″。 (zh)
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dbp:absmagV	2.710000 (xsd:double)
dbp:ageGyr	2.300000 (xsd:double)
dbp:appmagV	4.840000 (xsd:double)
dbp:class	F2 V (en)
dbp:constell	dbr:Draco_(constellation)
dbp:eccentricity	0.350000 (xsd:double)
dbp:epoch	J2000 (en)
dbp:gravity	4.050000 (xsd:double)
dbp:k	6 (xsd:integer)
dbp:luminosity	6.910000 (xsd:double)
dbp:mass	1.430000 (xsd:double)
dbp:metalFe	−0.23 (en)
dbp:pError	0.318200 (xsd:double)
dbp:parallax	39.293200 (xsd:double)
dbp:periarg	80.700000 (xsd:double)
dbp:periastron	2415232.400000 (xsd:double)
dbp:periodUnitless	3.1412448E7
dbp:propMoDec	67.070000 (xsd:double)
dbp:propMoRa	24.850000 (xsd:double)
dbp:radialV	−2.0 (en)
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dbp:temperature	6630 (xsd:integer)
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rdfs:comment	HD 151613 är en dubbelstjärna i den södra delen av stjärnbilden Draken. Den har en kombinerad skenbar magnitud av ca 4,84 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 39,3 mas, beräknas den befinna sig på ett avstånd på ca 83 ljusår (ca 25 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca -2 km/s. (sv) HD 151613，又名BD+57 1702，SAO 30076、HR 6237，是一颗恒星，视星等为4.85，位于銀經85.67，銀緯39.53，其B1900.0坐标为赤經16h 43m 23.9s，赤緯+56° 39.53′ 38″。 (zh) HD 151613 is a binary star system in the northern circumpolar constellation of Draco. It is visible to the naked eye with an apparent visual magnitude of 4.84. The distance to this star, as estimated from its annual parallax shift of 39.3 mas, is 83 light years. It is moving closer to the Earth with a heliocentric radial velocity of −2 km/s. (en)
rdfs:label	HD 151613 (en) HD 151613 (sv) HD 151613 (zh)
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foaf:name	HD 151613 (en)
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