21258+3329 GYL 56 (HD 204154)
21h 25m 47.80s +33° 28' 55.9" P.A. 3.00 sep 16.3 mag 8.33,12.10 Sp B9 dist. 304.88 pc (994.52 l.y.)
Coord 2000 |
21258+3329 |
|
Discov num |
GYL 56 |
|
Comp |
|
|
Coord arcsec 2000 |
21 25 47.80 +33 28 55.9 |
|
Date first |
1934 |
|
Date last |
2015 |
|
Obs |
11 |
|
Pa first |
4 |
|
Pa last |
2.5 |
|
P.A. Now (θ) |
2.5° |
|
Sep first |
13.1 |
|
Sep last |
16.34 |
|
Sep. Now (ρ) |
16.34" |
|
Mag pri |
8.33 |
|
Mag sec |
12.10 |
|
delta mag (ΔM) |
3.77 |
|
Spectral class |
B9 (blue-white) |
|
Pri motion ra |
-013 |
|
Sec motion ra |
-012 |
|
Pri motion dec |
-011 |
|
Sec motion dec |
-008 |
|
Notes |
N
(See Notes) |
|
rPM=0.186 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 204154 |
|
Constellation |
Cygnus |
|
SAO |
71326 |
|
HIP |
105813 |
|
Tycho2 |
2707-00239-1 |
|
Gaia DR2 |
1854309390838340992 |
|
HD |
204154 |
|
BD |
BD+32 4156 |
|
Distance |
304.88 |
|
Distance ly |
994.52 |
|