9-Alpha Cma 'Sirius'
| WDS | 06451-1643 |
| RA | 06 45 09 |
| Dec | -16 42 47 |
| Sternbild/Constellation | Cma, Canis Major / Gr. Hund / Big dog Foto/Photo  |
| Bmkg./Note | - |
| Komponenten Components |
Abstand " Separation " |
Mag 1 | Mag 2 | Positionswinkel Position angle |
| AB AD AE AF BC |
3,7 31,6 72,8 92,4 1,5 |
-0,54 -0,54 -0,54 -0,54 8,58 |
8,5 14 ? ? 11,41 |
190 183 95 78 144 |
WDS notes: AGC 1 AB: Sirius. Magnitude of A -1.58. Proper motion of A -553 -1205. P = 50.1yr., a = 7.50", motion retrograde. Bessel, in 1834, notes that the proper motion was variable and, in his letter to Humboldt, stated that "...Procyon and Sirius are genuine binary sys
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