21479+3117 HJ 1688
21h 47m 53.80s +31° 16' 04.7" P.A. 351.00 sep 16.4 mag 11.13,12.60
| Coord 2000 |
21479+3117 |
|
Discov num |
HJ 1688 |
|
Comp |
|
|
Coord arcsec 2000 |
21 47 53.80 +31 16 04.7 |
|
| Date first |
1828 |
|
Date last |
2015 |
|
Obs |
11 |
|
| Pa first |
6 |
|
Pa last |
351.4 |
|
P.A. Now (θ) |
351.4° |
|
| Sep first |
12.0 |
|
Sep last |
16.351 |
|
Sep. Now (ρ) |
16.351" |
|
| Mag pri |
11.13 |
|
Mag sec |
12.60 |
|
delta mag (ΔM) |
1.47 |
|
Spectral class |
|
|
| Pri motion ra |
-016 |
|
Sec motion ra |
-038 |
|
| Pri motion dec |
-031 |
|
Sec motion dec |
-023 |
|
| Notes |
|
|
rPM=0.527
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
2718-02202-1 |
|
Gaia DR2 |
1945729006677773568 |
|
