727 B
727 B
| name | constellation | created_by | created_date | updated_by | updated_date |
|---|---|---|---|---|---|
| 70 Oph | Oph | 8mag | 2022-01-21 17:00:00 | skybber | 2022-02-10 16:54:01.341332 |
a binary star consisting of two stars of brightness 4.2mag and 6mag with a mutual orbital period of 87 years. The orbit has such a spatial position that the apparent angular separation of the two stars changes significantly during the orbital period. The smallest separation (1.5") was reached by the two stars in 1989 and 1990. By the turn of the millennium, their separation had increased to 3.9", which was enough for a telescope with a 5 cm diameter lens. In 2005, the distance was increased to 5". The two stars will reach their greatest ever separation of 6.8" in 2024.