| http://dbpedia.org/ontology/abstract
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狐狸座18，又名BD+26 3815，HD 191747、SAO 88295、HR 7711，是狐狸座的一颗恒星，视星等为5.52，位于銀經65.71，銀緯-3.57，其B1900.0坐标为赤經20h 6m 23s，赤緯+26° -3.57′ 28″。
, 18 Vulpeculae is a binary star system in t … 18 Vulpeculae is a binary star system in the northern constellation of Vulpecula, located about 489 light years away from the Sun. It is visible to the naked eye as a faint, white-hued star with a combined apparent visual magnitude of 5.51. The system is moving closer to the Earth with a heliocentric radial velocity of −11.7 km/s. This is a double-lined spectroscopic binary system with an orbital period of 9.3 days and a small eccentricity of 0.0116. It is a detached binary with a semimajor axis of 0.14742 ± 0.00047 AU. The system contains a Delta Scuti variable, but the temperature places it to the blue (hotter) side of the δ Scuti instability strip. The combined stellar classification of this system remains unclear, with classes of A3 III, A1 IV, A3 V, and A2 IV being given. The ultraviolet spectrum matches an A3 dwarf star. It shows no spectral peculiarities. star. It shows no spectral peculiarities.
, 18 Vulpeculae, som är stjärnans Flamsteed- … 18 Vulpeculae, som är stjärnans Flamsteed-beteckning, är en dubbelstjärna belägen i den mellersta delen av stjärnbilden Räven. Den har en högsta skenbar magnitud på ca 5,51 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 6,7 mas, beräknas den befinna sig på ett avstånd på ca 489 ljusår (ca 150 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet av ca -12 km/s.iocentrisk radialhastighet av ca -12 km/s.
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−0.05
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0.1098
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| rdfs:comment |
18 Vulpeculae is a binary star system in t … 18 Vulpeculae is a binary star system in the northern constellation of Vulpecula, located about 489 light years away from the Sun. It is visible to the naked eye as a faint, white-hued star with a combined apparent visual magnitude of 5.51. The system is moving closer to the Earth with a heliocentric radial velocity of −11.7 km/s.eliocentric radial velocity of −11.7 km/s.
, 18 Vulpeculae, som är stjärnans Flamsteed- … 18 Vulpeculae, som är stjärnans Flamsteed-beteckning, är en dubbelstjärna belägen i den mellersta delen av stjärnbilden Räven. Den har en högsta skenbar magnitud på ca 5,51 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 6,7 mas, beräknas den befinna sig på ett avstånd på ca 489 ljusår (ca 150 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet av ca -12 km/s.iocentrisk radialhastighet av ca -12 km/s.
, 狐狸座18，又名BD+26 3815，HD 191747、SAO 88295、HR 7711，是狐狸座的一颗恒星，视星等为5.52，位于銀經65.71，銀緯-3.57，其B1900.0坐标为赤經20h 6m 23s，赤緯+26° -3.57′ 28″。
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18 Vulpeculae
, 左旗增十三
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