21308+4752 A 769 (HD 204977)
21h 30m 46.22s +47° 51' 43.8" P.A. 296.00 sep 0.7 mag 9.17,9.23 Sp A2
| Coord 2000 |
21308+4752 |
|
Discov num |
A 769 |
|
Comp |
|
|
Coord arcsec 2000 |
21 30 46.22 +47 51 43.8 |
|
| Date first |
1904 |
|
Date last |
2015 |
|
Obs |
20 |
|
| Pa first |
284 |
|
Pa last |
295.8 |
|
P.A. Now (θ) |
295.8° |
|
| Sep first |
0.7 |
|
Sep last |
0.72 |
|
Sep. Now (ρ) |
0.72" |
|
| Mag pri |
9.17 |
|
Mag sec |
9.23 |
|
delta mag (ΔM) |
0.06 |
|
Spectral class |
A2 (white) |
|
| Pri motion ra |
+004 |
|
Sec motion ra |
+004 |
|
| Pri motion dec |
-001 |
|
Sec motion dec |
-001 |
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 204977 |
|
Constellation |
Cygnus |
|
SAO |
50959 |
|
Tycho2 |
3594-01810-1 |
|
| HD |
204977 |
|
