Type | Star |
---|---|
Magnitude | 3.5 | Right Ascension | 18h 21' 3.4" (2000) |
Declination | 72° 43' 58" N |
Constellation | Draco |
Classification | F7V |
Andrew Cooper
Jul 21, 2023 Oregon Star Party, Ochoco Mts, OR (map)
25cm f/4.5 Newtonian, Holoholo @ 71x
Seeing: 7 Transparency: 6 Moon: 0%
Brilliant pale yellow, the 12th magnitude star visible 3' north is the B component listed in WDS
Checking WDS one finds the C companion is a close 10" double to B at magnitude 14.5. Gaia EDR3 and Hipparcos data shows none of these three to be physically related with very different parallax and proper motions. B is a background to 44 Dra, while C is background to B. 44 Dra is a very high proper motion star with 531.21 mas/yr in RA and -349.71 mas/yr in Dec. Despite B and C not being related 44 Dra is binary, having a 5.7 magnitude companion with 0.1" separation.
Andrew Cooper
Jul 20, 2023 Oregon Star Party, Ochoco Mts, OR (map)
25cm f/4.5 Newtonian, Holoholo @ 71x
Seeing: 7 Transparency: 6 Moon: 0%
Brilliant rich orange, no companion noted
NGC 6643 | NGC 6651 | |
Phi Draconis |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
A complete list of credits and sources can be found on the about page