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HR 8442 is a spectroscopic binary star in the constellation Cepheus. The primary is a G type giant star while the secondary's spectral type is unknown. The spectroscopic binary nature of the star was first noticed by Jose Renan de Medeiros and Michel Mayor using radial velocity measurements from the Coravel spectrometer at Haute-Provence Observatory. Roger Griffin then placed the star on his observing program at Cambridge Observatory leading to an orbital solution being published in 2015.

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  • HR 8442 (en)
  • HD 210220 (sv)
  • 造父增二 (zh)
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  • HR 8442 is a spectroscopic binary star in the constellation Cepheus. The primary is a G type giant star while the secondary's spectral type is unknown. The spectroscopic binary nature of the star was first noticed by Jose Renan de Medeiros and Michel Mayor using radial velocity measurements from the Coravel spectrometer at Haute-Provence Observatory. Roger Griffin then placed the star on his observing program at Cambridge Observatory leading to an orbital solution being published in 2015. (en)
  • HD 210220, eller HR 8442, är en dubbelstjärna i stjärnbilden Cepheus. Huvudkomponenten är en gul jätte. Dubbelstjärnan har den kombinerade visuella magnituden +6,34 och är nätt och jämnt synlig för blotta ögat vid mycket god seeing. (sv)
  • 造父增二（HD 210220），又名BD+58 2393，SAO 34072、HR 8442，是一颗仙王座的恒星，视星等为6.32，位于銀經103.04，銀緯2.47，其B1900.0坐标为赤經22h 3m 47.3s，赤緯+58° 2.47′ 9″。 (zh)
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  • HR8442 (en)
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  • HR 8442B (en)
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  • G8.6 III (en)
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  • J2000.0 (en)
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  • days (en)
primary
  • HR 8442A (en)
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  • HR 8442 is a spectroscopic binary star in the constellation Cepheus. The primary is a G type giant star while the secondary's spectral type is unknown. The spectroscopic binary nature of the star was first noticed by Jose Renan de Medeiros and Michel Mayor using radial velocity measurements from the Coravel spectrometer at Haute-Provence Observatory. Roger Griffin then placed the star on his observing program at Cambridge Observatory leading to an orbital solution being published in 2015. (en)
  • HD 210220, eller HR 8442, är en dubbelstjärna i stjärnbilden Cepheus. Huvudkomponenten är en gul jätte. Dubbelstjärnan har den kombinerade visuella magnituden +6,34 och är nätt och jämnt synlig för blotta ögat vid mycket god seeing. (sv)
  • 造父增二（HD 210220），又名BD+58 2393，SAO 34072、HR 8442，是一颗仙王座的恒星，视星等为6.32，位于銀經103.04，銀緯2.47，其B1900.0坐标为赤經22h 3m 47.3s，赤緯+58° 2.47′ 9″。 (zh)
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