21502+5131 COU 2655
21h 50m 11.45s +51° 30' 21.2" P.A. 250.00 sep 0.3 mag 10.80,11.30 Sp F2
Coord 2000 |
21502+5131 |
|
Discov num |
COU2655 |
|
Comp |
|
|
Coord arcsec 2000 |
21 50 11.45 +51 30 21.2 |
|
Date first |
1989 |
|
Date last |
2009 |
|
Obs |
3 |
|
Pa first |
254 |
|
Pa last |
249.7 |
|
P.A. Now (θ) |
249.7° |
|
Sep first |
0.3 |
|
Sep last |
0.289 |
|
Sep. Now (ρ) |
0.289" |
|
Mag pri |
10.80 |
|
Mag sec |
11.30 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
F2 (yellow-white) |
|
Pri motion ra |
-014 |
|
Sec motion ra |
|
|
Pri motion dec |
-013 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Tycho2 |
3616-00387-1 |
|