21307+3107 J 2351
21h 30m 17.04s +31° 08' 14.5" P.A. 347.00 sep 4.7 mag 12.50,13.80
| Coord 2000 |
21307+3107 |
|
Discov num |
J 2351 |
|
Comp |
|
|
Coord arcsec 2000 |
21 30 17.04 +31 08 14.5 |
|
| Date first |
1942 |
|
Date last |
2016 |
|
Obs |
7 |
|
| Pa first |
350 |
|
Pa last |
346.9 |
|
P.A. Now (θ) |
346.9° |
|
| Sep first |
5.0 |
|
Sep last |
4.713 |
|
Sep. Now (ρ) |
4.713" |
|
| Mag pri |
12.50 |
|
Mag sec |
13.80 |
|
delta mag (ΔM) |
1.3 |
|
Spectral class |
|
|
| Pri motion ra |
+008 |
|
Sec motion ra |
-015 |
|
| Pri motion dec |
-014 |
|
Sec motion dec |
+020 |
|
| Notes |
|
|
rPM=1.642
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
1850723088841426688 |
|
