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66 d'Andròmeda (66 Andromedae) és una estrella de la constel·lació d'Andròmeda. Té una magnitud aparent de 6,16.
, 66 Andromedae è una stella nana bianco-gialla nella sequenza principale di magnitudine 6,17 situata nella costellazione di Andromeda. Dista 173 anni luce dal sistema solare.
, 66 Андромеды (лат. 66 Andromedae, HD 15138 … 66 Андромеды (лат. 66 Andromedae, HD 15138) — двойная звезда в созвездии Андромеды на расстоянии приблизительно 178 световых лет (около 55 парсеков) от Солнца. Видимая звёздная величина звезды — +6,205m. Возраст звезды определён как около 1,273 млрд лет. Орбитальный период — около 10,99 суток.т. Орбитальный период — около 10,99 суток.
, 66 Andromedae is a binary star system in t … 66 Andromedae is a binary star system in the northern constellation of Andromeda, near the northern border with Perseus. The designation is from the star catalogue of English astronomer John Flamsteed, first published in 1712. It has a combined apparent magnitude of 6.16, which is near the lower limit of stars that are visible to the naked eye under good seeing conditions. An annual parallax shift of 18.3 mas provides a distance estimate of 178 light years. The net radial velocity of the system is poorly constrained, but the pair appear to be moving closer to the Earth with a heliocentric radial velocity of around −5 km/s. The variable velocity of this system was reported by Reynold K. Young from the David Dunlap Observatory in 1945. This is a double-lined spectroscopic binary system with an orbital period of 11 days and an eccentricity of 0.19. The two components are similar stars, each of 7th magnitude, with a combined stellar classification of F4 V, matching that of an F-type main sequence star. The system is around 1.3 billion years old and both stars are spinning slowly with a projected rotational velocity of around 4–5 km/s.ed rotational velocity of around 4–5 km/s.
, 66 Andromedae (66 And), som är stjärnans F … 66 Andromedae (66 And), som är stjärnans Flamsteedbeteckning, är en dubbelstjärna belägen i den nordvästra delen av stjärnbilden Andromeda. Den har en kombinerad skenbar magnitud på ca 6,16 och ligger nära gränsen för att vara svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 18,3 mas, beräknas den befinna sig på ett avstånd på ca 178 ljusår (ca 55 parsek) från solen. Även om stjärnans radiella hastighet är bristfälligt observerad beräknas den röra sig närmare solen med en heliocentrisk radiell hastighet av ca -5 km/s.ocentrisk radiell hastighet av ca -5 km/s.
, 仙女座66，又名BD+49 666，HD 15138、SAO 23353、HR 709，是仙女座的一颗恒星，视星等为6.12，位于銀經138.18，銀緯-9.42，其B1900.0坐标为赤經2h 21m 9s，赤緯+50° -9.42′ 22″。
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66 d'Andròmeda (66 Andromedae) és una estrella de la constel·lació d'Andròmeda. Té una magnitud aparent de 6,16.
, 66 Andromedae is a binary star system in t … 66 Andromedae is a binary star system in the northern constellation of Andromeda, near the northern border with Perseus. The designation is from the star catalogue of English astronomer John Flamsteed, first published in 1712. It has a combined apparent magnitude of 6.16, which is near the lower limit of stars that are visible to the naked eye under good seeing conditions. An annual parallax shift of 18.3 mas provides a distance estimate of 178 light years. The net radial velocity of the system is poorly constrained, but the pair appear to be moving closer to the Earth with a heliocentric radial velocity of around −5 km/s.centric radial velocity of around −5 km/s.
, 66 Андромеды (лат. 66 Andromedae, HD 15138 … 66 Андромеды (лат. 66 Andromedae, HD 15138) — двойная звезда в созвездии Андромеды на расстоянии приблизительно 178 световых лет (около 55 парсеков) от Солнца. Видимая звёздная величина звезды — +6,205m. Возраст звезды определён как около 1,273 млрд лет. Орбитальный период — около 10,99 суток.т. Орбитальный период — около 10,99 суток.
, 66 Andromedae è una stella nana bianco-gialla nella sequenza principale di magnitudine 6,17 situata nella costellazione di Andromeda. Dista 173 anni luce dal sistema solare.
, 66 Andromedae (66 And), som är stjärnans F … 66 Andromedae (66 And), som är stjärnans Flamsteedbeteckning, är en dubbelstjärna belägen i den nordvästra delen av stjärnbilden Andromeda. Den har en kombinerad skenbar magnitud på ca 6,16 och ligger nära gränsen för att vara svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 18,3 mas, beräknas den befinna sig på ett avstånd på ca 178 ljusår (ca 55 parsek) från solen. Även om stjärnans radiella hastighet är bristfälligt observerad beräknas den röra sig närmare solen med en heliocentrisk radiell hastighet av ca -5 km/s.ocentrisk radiell hastighet av ca -5 km/s.
, 仙女座66，又名BD+49 666，HD 15138、SAO 23353、HR 709，是仙女座的一颗恒星，视星等为6.12，位于銀經138.18，銀緯-9.42，其B1900.0坐标为赤經2h 21m 9s，赤緯+50° -9.42′ 22″。
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66 Андромеды
, 66 Andromedae
, 大陵增十
, 66 d'Andròmeda
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