21228+4031 HO 287
21h 23m 01.74s +40° 35' 39.3" P.A. 6.00 sep 2.7 mag 11.06,11.16
| Coord 2000 |
21228+4031 |
|
Discov num |
HO 287 |
|
Comp |
|
|
Coord arcsec 2000 |
21 23 01.74 +40 35 39.3 |
|
| Date first |
1889 |
|
Date last |
2015 |
|
Obs |
10 |
|
| Pa first |
9 |
|
Pa last |
6.3 |
|
P.A. Now (θ) |
6.3° |
|
| Sep first |
1.6 |
|
Sep last |
2.669 |
|
Sep. Now (ρ) |
2.669" |
|
| Mag pri |
11.06 |
|
Mag sec |
11.16 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
|
|
| Pri motion ra |
-009 |
|
Sec motion ra |
-006 |
|
| Pri motion dec |
-012 |
|
Sec motion dec |
+017 |
|
| Notes |
|
|
rPM=1.617
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3186-01820-1 |
|
Gaia DR2 |
1965694248059078656 |
|
