21401+4824 HJ 1681 AB
21h 40m 03.50s +48° 24' 24.5" P.A. 107.00 sep 7.5 mag 9.49,10.19
| Coord 2000 |
21401+4824 |
|
Discov num |
HJ 1681 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 40 03.50 +48 24 24.5 |
|
| Date first |
1828 |
|
Date last |
2016 |
|
Obs |
25 |
|
| Pa first |
114 |
|
Pa last |
107.2 |
|
P.A. Now (θ) |
107.2° |
|
| Sep first |
5.0 |
|
Sep last |
7.53 |
|
Sep. Now (ρ) |
7.53" |
|
| Mag pri |
9.49 |
|
Mag sec |
10.19 |
|
delta mag (ΔM) |
0.7 |
|
Spectral class |
|
|
| Pri motion ra |
-002 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
-011 |
|
Sec motion dec |
-005 |
|
| Notes |
W
|
|
rPM=0.537
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3595-01186-1 |
|
