21289+3002 MLB 668
21h 28m 55.23s +30° 02' 47.3" P.A. 240.00 sep 4.8 mag 10.95,12.20
| Coord 2000 |
21289+3002 |
|
Discov num |
MLB 668 |
|
Comp |
|
|
Coord arcsec 2000 |
21 28 55.23 +30 02 47.3 |
|
| Date first |
1930 |
|
Date last |
2005 |
|
Obs |
4 |
|
| Pa first |
338 |
|
Pa last |
239.9 |
|
P.A. Now (θ) |
239.9° |
|
| Sep first |
4.4 |
|
Sep last |
4.84 |
|
Sep. Now (ρ) |
4.84" |
|
| Mag pri |
10.95 |
|
Mag sec |
12.20 |
|
delta mag (ΔM) |
1.25 |
|
Spectral class |
|
|
| Pri motion ra |
+035 |
|
Sec motion ra |
-038 |
|
| Pri motion dec |
+087 |
|
Sec motion dec |
+060 |
|
| Notes |
|
|
rPM=0.83
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
2704-02502-1 |
|
Gaia DR2 |
1850089087247733760 |
|
