21550+5442 A 1800
21h 54m 59.16s +54° 42' 31.0" P.A. 27.00 sep 1.3 mag 10.31,11.06
| Coord 2000 |
21550+5442 |
|
Discov num |
A 1800 |
|
Comp |
|
|
Coord arcsec 2000 |
21 54 59.16 +54 42 31.0 |
|
| Date first |
1907 |
|
Date last |
2017 |
|
Obs |
11 |
|
| Pa first |
32 |
|
Pa last |
27.3 |
|
P.A. Now (θ) |
27.3° |
|
| Sep first |
1.2 |
|
Sep last |
1.27 |
|
Sep. Now (ρ) |
1.27" |
|
| Mag pri |
10.31 |
|
Mag sec |
11.06 |
|
delta mag (ΔM) |
0.75 |
|
Spectral class |
|
|
| Pri motion ra |
+025 |
|
Sec motion ra |
+025 |
|
| Pri motion dec |
+031 |
|
Sec motion dec |
+031 |
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3972-00790-1 |
|
Gaia DR2 |
2173795961997703424 |
|
