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HD 200044 (HR 8044) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.7, allowing it to be faintly seen with the naked eye. The object is located 598 light years away, but is approaching the Solar System with a heliocentric radial velocity of −15.07 km/s. There is a 10th magnitude optical companion separated 49.3″ away and at a position angle of 337° as of 2014. However, the separation is increasing due to HD 200044's high proper motion.

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  • HD 200044 (en)
  • HD 200044 (zh)
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  • HD 200044，又名BD+18 4675，SAO 106747、HR 8044，是一颗恒星，视星等为5.65，位于銀經66.23，銀緯-17.29，其B1900.0坐标为赤經20h 55m 53.4s，赤緯+18° -17.29′ 26″。 (zh)
  • HD 200044 (HR 8044) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.7, allowing it to be faintly seen with the naked eye. The object is located 598 light years away, but is approaching the Solar System with a heliocentric radial velocity of −15.07 km/s. There is a 10th magnitude optical companion separated 49.3″ away and at a position angle of 337° as of 2014. However, the separation is increasing due to HD 200044's high proper motion. (en)
foaf:name
  • HD200044 (en)
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absmag v
  • −0.33 (en)
appmag v
b-v
  • +1.61 (en)
class
  • M3 IIIab (en)
constell
epoch
  • J2000.0 (en)
gravity
luminosity
mass
p error
parallax
prop mo dec
  • −59.705 (en)
prop mo ra
  • −15.483 (en)
radial v
  • −15.07 (en)
radius
temperature
type
variable
  • suspected (en)
has abstract
  • HD 200044 (HR 8044) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.7, allowing it to be faintly seen with the naked eye. The object is located 598 light years away, but is approaching the Solar System with a heliocentric radial velocity of −15.07 km/s. HD 200044 has a spectral classification of M3 IIIab, indicating that its an ageing red giant. It is currently on the asymptotic giant branch and is fusing hydrogen and helium in shells around an inert carbon core. As a consequence, it has expanded to 58 times the radius of the Sun and is now radiating with a luminosity over 500 times greater than that of the Sun. HD 200044's large size and high luminosity yield an effective temperature of 3,707 K, giving it a red glow. HD 200044 is suspected to be a variable star with an amplitude of 0.05 magnitudes. There is a 10th magnitude optical companion separated 49.3″ away and at a position angle of 337° as of 2014. However, the separation is increasing due to HD 200044's high proper motion. (en)
  • HD 200044，又名BD+18 4675，SAO 106747、HR 8044，是一颗恒星，视星等为5.65，位于銀經66.23，銀緯-17.29，其B1900.0坐标为赤經20h 55m 53.4s，赤緯+18° -17.29′ 26″。 (zh)
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