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42 Herculis is a single star located around 450 light years away from the Sun in the northern constellation of Hercules. It is visible to the naked eye as a faint, red-hued star with an apparent visual magnitude of 4.86. The star is moving closer to the Earth with a heliocentric radial velocity of −56 km/s. There is an unknown source of X-ray and far ultraviolet emission originating from a location offset by more than one arcsecond from the star. This may indicate there is an undetected main sequence companion.

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  • 42 Herculis (en)
  • 42 Геркулеса (ru)
  • 42 Herculis (sv)
  • 七公一 (zh)
rdfs:comment
  • 42 Геркулеса (лат. 42 Herculis, HD 150450) — тройная звезда в созвездии Геркулеса на расстоянии приблизительно 448 световых лет (около 137 парсек) от Солнца. (ru)
  • 42 Herculis, som är stjärnans Flamsteed-beteckning, är en ensam stjärna i den nordvästra delen av stjärnbilden Herkules. Den har en skenbar magnitud på ca 4,86 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 7,3 mas, beräknas den befinna sig på ett avstånd på ca 450 ljusår (ca 137 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -56 km/s. (sv)
  • 武仙座42,又名BD+49 2531,HD 150450、SAO 46210、HR 6200,是武仙座的一颗恒星,视星等为4.9,位于銀經75.61,銀緯41.58,其B1900.0坐标为赤經16h 36m 1.9s,赤緯+49° 41.58′ 26″。 (zh)
  • 42 Herculis is a single star located around 450 light years away from the Sun in the northern constellation of Hercules. It is visible to the naked eye as a faint, red-hued star with an apparent visual magnitude of 4.86. The star is moving closer to the Earth with a heliocentric radial velocity of −56 km/s. There is an unknown source of X-ray and far ultraviolet emission originating from a location offset by more than one arcsecond from the star. This may indicate there is an undetected main sequence companion. (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/42_Herculis.jpg
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absmag v
  • −0.65 (en)
appmag v
class
  • M2.5III (en)
constell
epoch
gravity
p error
parallax
prop mo dec
  • +27.349 (en)
prop mo ra
  • −47.768 (en)
type
  • asymptotic giant branch (en)
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