About: HD 3

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

HD 3 is a single, white-hued star in the northern constellation Andromeda. With an apparent visual magnitude of 6.71, it is below the nominal brightness limit for visibility with the typical naked eye but may still be visible by some observers under ideal viewing conditions. Based upon an annual parallax shift of 6.3137±0.0826 mas, it is located roughly 517 light years away. The star is moving closer with a heliocentric radial velocity of −18 km/s, and will make perihelion in around 2.9 million years at a separation of around 351 ly (107.71 pc).

Property Value
dbo:abstract
  • Το HD 3 είναι τριπλό το οποίο απέχει 450 έτη φωτός (139 παρσέκ) από τη Γη και βρίσκεται στον αστερισμό Ανδρομέδα. Ο κύριος αστέρας του είναι φασματικού τύπου A1V και έχει φαινόμενο μέγεθος 6,71, είναι δηλαδή μετά βίας ορατός δια γυμνού οφθαλμού εφόσον επικρατούν βέλτιστες συνθήκες παρατήρησης. Οι άλλοι δύο αστέρες έχουν φαινόμενα μεγέθη 10,53 και 13,5 αντίστοιχα. (el)
  • HD 3 is a single, white-hued star in the northern constellation Andromeda. With an apparent visual magnitude of 6.71, it is below the nominal brightness limit for visibility with the typical naked eye but may still be visible by some observers under ideal viewing conditions. Based upon an annual parallax shift of 6.3137±0.0826 mas, it is located roughly 517 light years away. The star is moving closer with a heliocentric radial velocity of −18 km/s, and will make perihelion in around 2.9 million years at a separation of around 351 ly (107.71 pc). The stellar classification of this star is A1 Vn, indicating it is an A-type main-sequence star with "nebulous" lines due to rapid rotation. It is a Lambda Boötis candidate star, being classified as chemically-peculiar by Abt & Morrell (1995). Murphy et al. (2015) list the membership likelihood as uncertain. HD 3 has 2.36 times the mass of the Sun and about 1.9 times the Sun's radius. It is spinning with a projected rotational velocity of 228 km/s. The star is radiating around 43.5 times the Sun's luminosity from its photosphere at an effective temperature of about 9,057 K. HD 3 has two visual companions. Component B is a magnitude 13.70 star at an angular separation of 16″ along a position angle (PA) of 107°, as of 2016. The third star, component C, is magnitude 10.58 and lies at a separation of 21″ along a PA of 235°, also as of 2016. (en)
  • HD 3 är en vit stjärna i huvudserien i stjärnbilden Andromeda. Stjärnan har nebulösa linjer i sitt spektrum som tyder på snabb rotation. Den har visuell magnitud +6,71 och kräver fältkikare för att kunna observeras. (sv)
  • HD 3，又名BD+44 4550，SAO 36042、HR 1，是一颗位于仙女座的恒星，视星等为6.7，位于銀經114.44，銀緯-16.88，其B1900.0坐标为赤經0h 0m 1.1s，赤緯+44° -16.88′ 22″。 (zh)
dbo:wikiPageID
  • 22290627 (xsd:integer)
dbo:wikiPageLength
  • 7334 (xsd:nonNegativeInteger)
dbo:wikiPageRevisionID
  • 1124575445 (xsd:integer)
dbo:wikiPageWikiLink
dbp:absmagV
  • +1.02 (en)
dbp:appmagV
  • 6.710000 (xsd:double)
dbp:bV
  • 0.060000 (xsd:double)
dbp:class
  • A1 Vn (en)
dbp:constell
dbp:epoch
  • J2000 (en)
dbp:pError
  • 0.082600 (xsd:double)
dbp:parallax
  • 6.313700 (xsd:double)
dbp:radius
  • 1.900000 (xsd:double)
dbp:rotationalVelocity
  • 228 (xsd:integer)
dbp:type
dbp:wikiPageUsesTemplate
dct:subject
gold:hypernym
rdf:type
rdfs:comment
  • Το HD 3 είναι τριπλό το οποίο απέχει 450 έτη φωτός (139 παρσέκ) από τη Γη και βρίσκεται στον αστερισμό Ανδρομέδα. Ο κύριος αστέρας του είναι φασματικού τύπου A1V και έχει φαινόμενο μέγεθος 6,71, είναι δηλαδή μετά βίας ορατός δια γυμνού οφθαλμού εφόσον επικρατούν βέλτιστες συνθήκες παρατήρησης. Οι άλλοι δύο αστέρες έχουν φαινόμενα μεγέθη 10,53 και 13,5 αντίστοιχα. (el)
  • HD 3 är en vit stjärna i huvudserien i stjärnbilden Andromeda. Stjärnan har nebulösa linjer i sitt spektrum som tyder på snabb rotation. Den har visuell magnitud +6,71 och kräver fältkikare för att kunna observeras. (sv)
  • HD 3，又名BD+44 4550，SAO 36042、HR 1，是一颗位于仙女座的恒星，视星等为6.7，位于銀經114.44，銀緯-16.88，其B1900.0坐标为赤經0h 0m 1.1s，赤緯+44° -16.88′ 22″。 (zh)
  • HD 3 is a single, white-hued star in the northern constellation Andromeda. With an apparent visual magnitude of 6.71, it is below the nominal brightness limit for visibility with the typical naked eye but may still be visible by some observers under ideal viewing conditions. Based upon an annual parallax shift of 6.3137±0.0826 mas, it is located roughly 517 light years away. The star is moving closer with a heliocentric radial velocity of −18 km/s, and will make perihelion in around 2.9 million years at a separation of around 351 ly (107.71 pc). (en)
rdfs:label
  • HD 3 (el)
  • HD 3 (en)
  • HD 3 (sv)
  • HD 3 (zh)
owl:sameAs
prov:wasDerivedFrom
foaf:isPrimaryTopicOf
foaf:name
  • HD 3 (en)
is dbo:wikiPageRedirects of
is dbo:wikiPageWikiLink of
is foaf:primaryTopic of
Powered by OpenLink Virtuoso    This material is Open Knowledge     W3C Semantic Web Technology     This material is Open Knowledge    Valid XHTML + RDFa
This content was extracted from Wikipedia and is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License