21390+4940 HJ 1674
21h 38m 59.64s +49° 39' 57.4" P.A. 328.00 sep 11.1 mag 9.43,11.50 Sp A0
| Coord 2000 |
21390+4940 |
|
Discov num |
HJ 1674 |
|
Comp |
|
|
Coord arcsec 2000 |
21 38 59.64 +49 39 57.4 |
|
| Date first |
1828 |
|
Date last |
2016 |
|
Obs |
10 |
|
| Pa first |
330 |
|
Pa last |
327.6 |
|
P.A. Now (θ) |
327.6° |
|
| Sep first |
9.0 |
|
Sep last |
11.086 |
|
Sep. Now (ρ) |
11.086" |
|
| Mag pri |
9.43 |
|
Mag sec |
11.50 |
|
delta mag (ΔM) |
2.07 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
-006 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
-002 |
|
Sec motion dec |
-002 |
|
| Notes |
|
|
rPM=0.158 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3599-02935-1 |
|
Gaia DR2 |
1979096573260829440 |
|
