20109+3047 HDS 2876 (HD 191855)
20h 10m 54.39s +30° 47' 22.9" P.A. 67.00 sep 0.3 mag 6.99,10.03 Sp B9 dist. 606.06 pc (1976.97 l.y.)
| Coord 2000 |
20109+3047 |
|
Discov num |
HDS2876 |
|
Comp |
|
|
Coord arcsec 2000 |
20 10 54.39 +30 47 22.9 |
|
| Date first |
1991 |
|
Date last |
2010 |
|
Obs |
3 |
|
| Pa first |
72 |
|
Pa last |
66.9 |
|
P.A. Now (θ) |
66.9° |
|
| Sep first |
0.3 |
|
Sep last |
0.287 |
|
Sep. Now (ρ) |
0.287" |
|
| Mag pri |
6.99 |
|
Mag sec |
10.03 |
|
delta mag (ΔM) |
3.04 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
+006 |
|
Sec motion ra |
|
|
| Pri motion dec |
-001 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 191855 |
|
Constellation |
Cygnus |
|
SAO |
69562 |
|
HIP |
99431 |
|
| Tycho2 |
2671-01740-1 |
|
Gaia DR2 |
2029919299226305792 |
|
HD |
191855 |
|
GC |
28014 |
|
| BD |
BD+30 3929 |
|
Distance |
606.06 |
|
Distance ly |
1976.97 |
|
