21417+5026 HJ 1684
21h 41m 44.01s +50° 26' 18.8" P.A. 319.00 sep 10.8 mag 9.35,10.60 Sp B8
| Coord 2000 |
21417+5026 |
|
Discov num |
HJ 1684 |
|
Comp |
|
|
Coord arcsec 2000 |
21 41 44.01 +50 26 18.8 |
|
| Date first |
1828 |
|
Date last |
2015 |
|
Obs |
13 |
|
| Pa first |
320 |
|
Pa last |
318.9 |
|
P.A. Now (θ) |
318.9° |
|
| Sep first |
8.0 |
|
Sep last |
10.841 |
|
Sep. Now (ρ) |
10.841" |
|
| Mag pri |
9.35 |
|
Mag sec |
10.60 |
|
delta mag (ΔM) |
1.25 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
-008 |
|
Sec motion ra |
-009 |
|
| Pri motion dec |
-006 |
|
Sec motion dec |
-003 |
|
| Notes |
|
|
rPM=0.316
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3599-02469-1 |
|
Gaia DR2 |
1979245900676294912 |
|
