21253+2928 COU 940 (HD 204051)
21h 25m 19.98s +29° 27' 42.1" P.A. 263.00 sep 0.3 mag 7.71,8.85 Sp A0 dist. 261.1 pc (851.71 l.y.)
| Coord 2000 |
21253+2928 |
|
Discov num |
COU 940 |
|
Comp |
|
|
Coord arcsec 2000 |
21 25 19.98 +29 27 42.1 |
|
| Date first |
1972 |
|
Date last |
2014 |
|
Obs |
20 |
|
| Pa first |
285 |
|
Pa last |
262.7 |
|
P.A. Now (θ) |
262.7° |
|
| Sep first |
0.4 |
|
Sep last |
0.329 |
|
Sep. Now (ρ) |
0.329" |
|
| Mag pri |
7.71 |
|
Mag sec |
8.85 |
|
delta mag (ΔM) |
1.14 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+011 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 204051 |
|
Constellation |
Cygnus |
|
SAO |
89697 |
|
HIP |
105770 |
|
| Tycho2 |
2199-00210-1 |
|
Gaia DR2 |
1850137122161686528 |
|
HD |
204051 |
|
BD |
BD+28 4085 |
|
| Distance |
261.1 |
|
Distance ly |
851.71 |
|
