21098+2915 DU 3
21h 10m 54.59s +28° 56' 10.4" P.A. 15.00 sep 6.1 mag 10.67,10.69
| Coord 2000 |
21098+2915 |
|
Discov num |
DU 3 |
|
Comp |
|
|
Coord arcsec 2000 |
21 10 54.59 +28 56 10.4 |
|
| Date first |
1873 |
|
Date last |
2016 |
|
Obs |
18 |
|
| Pa first |
18 |
|
Pa last |
14.9 |
|
P.A. Now (θ) |
14.9° |
|
| Sep first |
6.4 |
|
Sep last |
6.123 |
|
Sep. Now (ρ) |
6.123" |
|
| Mag pri |
10.67 |
|
Mag sec |
10.69 |
|
delta mag (ΔM) |
0.02 |
|
Spectral class |
|
|
| Pri motion ra |
+038 |
|
Sec motion ra |
+036 |
|
| Pri motion dec |
-015 |
|
Sec motion dec |
-013 |
|
| Notes |
N
T
(See Notes, Parallax indicates physical) |
|
rPM=0.069 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
2185-02284-1 |
|
Gaia DR2 |
1851421867140809216 |
|
