21100+4745 A 761
21h 09m 59.14s +47° 44' 43.9" P.A. 56.00 sep 0.4 mag 9.35,10.70 Sp B8 dist. 934.58 pc (3048.6 l.y.)
| Coord 2000 |
21100+4745 |
|
Discov num |
A 761 |
|
Comp |
|
|
Coord arcsec 2000 |
21 09 59.14 +47 44 43.9 |
|
| Date first |
1904 |
|
Date last |
2016 |
|
Obs |
12 |
|
| Pa first |
60 |
|
Pa last |
56.2 |
|
P.A. Now (θ) |
56.2° |
|
| Sep first |
0.3 |
|
Sep last |
0.381 |
|
Sep. Now (ρ) |
0.381" |
|
| Mag pri |
9.35 |
|
Mag sec |
10.70 |
|
delta mag (ΔM) |
1.35 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
-005 |
|
Sec motion ra |
|
|
| Pri motion dec |
-009 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
HIP |
104485 |
|
Tycho2 |
3592-01620-1 |
|
Gaia DR2 |
2165260345840662400 |
|
| BD |
BD+47 3316 |
|
Distance |
934.58 |
|
Distance ly |
3048.6 |
|
