21118+3931 ES 1992
21h 11m 47.55s +39° 30' 42.2" P.A. 203.00 sep 3.1 mag 10.90,13.40
| Coord 2000 |
21118+3931 |
|
Discov num |
ES 1992 |
|
Comp |
|
|
Coord arcsec 2000 |
21 11 47.55 +39 30 42.2 |
|
| Date first |
1922 |
|
Date last |
2016 |
|
Obs |
6 |
|
| Pa first |
205 |
|
Pa last |
202.7 |
|
P.A. Now (θ) |
202.7° |
|
| Sep first |
3.3 |
|
Sep last |
3.103 |
|
Sep. Now (ρ) |
3.103" |
|
| Mag pri |
10.90 |
|
Mag sec |
13.40 |
|
delta mag (ΔM) |
2.5 |
|
Spectral class |
|
|
| Pri motion ra |
-012 |
|
Sec motion ra |
|
|
| Pri motion dec |
-010 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3173-00202-1 |
|
Gaia DR2 |
1968133514599273088 |
|
