21444+4611 HJ 1687
21h 44m 27.85s +46° 10' 34.8" P.A. 55.00 sep 4.9 mag 10.59,11.10
| Coord 2000 |
21444+4611 |
|
Discov num |
HJ 1687 |
|
Comp |
|
|
Coord arcsec 2000 |
21 44 27.85 +46 10 34.8 |
|
| Date first |
1828 |
|
Date last |
2015 |
|
Obs |
9 |
|
| Pa first |
59 |
|
Pa last |
54.7 |
|
P.A. Now (θ) |
54.7° |
|
| Sep first |
2.0 |
|
Sep last |
4.913 |
|
Sep. Now (ρ) |
4.913" |
|
| Mag pri |
10.59 |
|
Mag sec |
11.10 |
|
delta mag (ΔM) |
0.51 |
|
Spectral class |
|
|
| Pri motion ra |
+002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-005 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3591-01728-1 |
|
Gaia DR2 |
1974242057620607232 |
|
