21 Arietis [SEP] constellation
21 Arietis
21 Arietis (abbreviated 21 Ari) is a binary star system in the northern constellation of Aries. "21 Arietis" is the Flamsteed designation. It has a combined apparent visual magnitude is 5.57; the brighter member is magnitude 6.40 while the fainter star is magnitude 6.48. The distance to this star system, based upon an annual parallax shift of 19.58 mas, is . The pair orbit each other with a period of 23.70 years and an eccentricity of 0.68.
The system was initially thought to be
Théophile Gautier first published in 1856
Music.
- Avatar (Swedish band), a Swedish melodic death metal band
- "Avatar" (Avatar album), the third album released by Swedish metal band Avatar
- "Avatar" (Angels and Agony album)
- "Avatar" (Comets on Fire album)
- Avatar Records, a record label
- Savatage or Avatar, an American heavy metal band
- "(Do You Wanna Date My) Avatar", a song by the