21495+4716 HJ 1698
21h 49m 30.29s +47° 16' 32.8" P.A. 321.00 sep 7.7 mag 9.86,12.80
| Coord 2000 |
21495+4716 |
|
Discov num |
HJ 1698 |
|
Comp |
|
|
Coord arcsec 2000 |
21 49 30.29 +47 16 32.8 |
|
| Date first |
1828 |
|
Date last |
2015 |
|
Obs |
9 |
|
| Pa first |
336 |
|
Pa last |
321.1 |
|
P.A. Now (θ) |
321.1° |
|
| Sep first |
6.0 |
|
Sep last |
7.654 |
|
Sep. Now (ρ) |
7.654" |
|
| Mag pri |
9.86 |
|
Mag sec |
12.80 |
|
delta mag (ΔM) |
2.94 |
|
Spectral class |
|
|
| Pri motion ra |
+002 |
|
Sec motion ra |
-011 |
|
| Pri motion dec |
+008 |
|
Sec motion dec |
+019 |
|
| Notes |
|
|
rPM=0.776
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3608-01745-1 |
|
Gaia DR2 |
1974768414443509376 |
|
