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- HR 7955 is a binary star system in the northern circumpolar constellation of Cepheus, near the constellation border with Cygnus. It has a yellow-white hue and is faintly visible to the naked eye with a combined apparent visual magnitude of 4.51. The system is located at a distance of 89 light-years (27.3 parsecs) from the Sun, based on parallax. It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.243 arc seconds per annum, and is drifting closer to the Sun with a radial velocity of -33 km/s. The double-lined nature of this spectroscopic binary system was not announced until 1972. It has an orbital period of 1.35 years and an eccentricity of 0.551. Both components appear to be slightly evolved stars that are leaving the main sequence and becoming subgiant stars, with stellar classifications of F8IV-V and F9IV-V. They each have slightly greater mass than the Sun: 107% and 105%, respectively. The system is about 2.25 billion years old. (en)
- HD 198084, eller HR 7955, är en dubbelstjärna i stjärnbilden Cepheus. Den består av två gulvita stjärnor i huvudserien med en osäker klassificering och kan också vara underjättar. Dubbelstjärnan har den kombinerade visuella magnituden +4,63 och är synlig för blotta ögat vid normal seeing. (sv)
- HD 198084，又名BD+57 2240，SAO 32862、HR 7955，是一颗恒星，视星等为4.51，位于銀經94.43，銀緯9.06，其B1900.0坐标为赤經20h 42m 52.1s，赤緯+57° 9.06′ 15″。 (zh)
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- HR 7955 A (en)
- HR 7955 B (en)
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- HD 198084, eller HR 7955, är en dubbelstjärna i stjärnbilden Cepheus. Den består av två gulvita stjärnor i huvudserien med en osäker klassificering och kan också vara underjättar. Dubbelstjärnan har den kombinerade visuella magnituden +4,63 och är synlig för blotta ögat vid normal seeing. (sv)
- HD 198084，又名BD+57 2240，SAO 32862、HR 7955，是一颗恒星，视星等为4.51，位于銀經94.43，銀緯9.06，其B1900.0坐标为赤經20h 42m 52.1s，赤緯+57° 9.06′ 15″。 (zh)
- HR 7955 is a binary star system in the northern circumpolar constellation of Cepheus, near the constellation border with Cygnus. It has a yellow-white hue and is faintly visible to the naked eye with a combined apparent visual magnitude of 4.51. The system is located at a distance of 89 light-years (27.3 parsecs) from the Sun, based on parallax. It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.243 arc seconds per annum, and is drifting closer to the Sun with a radial velocity of -33 km/s. (en)
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- HR 7955 (en)
- HD 198084 (sv)
- HD 198084 (zh)
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