21164+4110 ES 1689
21h 16m 26.25s +41° 09' 36.7" P.A. 136.00 sep 3.3 mag 11.30,11.50
| Coord 2000 |
21164+4110 |
|
Discov num |
ES 1689 |
|
Comp |
|
|
Coord arcsec 2000 |
21 16 26.25 +41 09 36.7 |
|
| Date first |
1895 |
|
Date last |
2016 |
|
Obs |
8 |
|
| Pa first |
137 |
|
Pa last |
135.9 |
|
P.A. Now (θ) |
135.9° |
|
| Sep first |
2.8 |
|
Sep last |
3.317 |
|
Sep. Now (ρ) |
3.317" |
|
| Mag pri |
11.30 |
|
Mag sec |
11.50 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
|
|
| Pri motion ra |
-021 |
|
Sec motion ra |
-011 |
|
| Pri motion dec |
-025 |
|
Sec motion dec |
-038 |
|
| Notes |
|
|
rPM=0.415
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3173-00944-1 |
|
Gaia DR2 |
1968746213155020928 |
|
ADS |
14810 |
|
