21109+4034 ES 255
21h 10m 57.86s +40° 32' 52.2" P.A. 34.00 sep 4.6 mag 10.13,12.90
| Coord 2000 |
21109+4034 |
|
Discov num |
ES 255 |
|
Comp |
|
|
Coord arcsec 2000 |
21 10 57.86 +40 32 52.2 |
|
| Date first |
1895 |
|
Date last |
2016 |
|
Obs |
8 |
|
| Pa first |
36 |
|
Pa last |
34.4 |
|
P.A. Now (θ) |
34.4° |
|
| Sep first |
4.5 |
|
Sep last |
4.6 |
|
Sep. Now (ρ) |
4.6" |
|
| Mag pri |
10.13 |
|
Mag sec |
12.90 |
|
delta mag (ΔM) |
2.77 |
|
Spectral class |
|
|
| Pri motion ra |
+000 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3173-00769-1 |
|
Gaia DR2 |
1968515079501821312 |
|
