21265+5245 BU 369 AB (HD 204401)
21h 26m 29.08s +52° 44' 52.7" P.A. 31.00 sep 16.0 mag 7.59,11.80 Sp B9.5V dist. 198.81 pc (648.52 l.y.)
| Coord 2000 |
21265+5245 |
|
Discov num |
BU 369 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 26 29.08 +52 44 52.7 |
|
| Date first |
1885 |
|
Date last |
2015 |
|
Obs |
14 |
|
| Pa first |
33 |
|
Pa last |
30.9 |
|
P.A. Now (θ) |
30.9° |
|
| Sep first |
16.0 |
|
Sep last |
15.992 |
|
Sep. Now (ρ) |
15.992" |
|
| Mag pri |
7.59 |
|
Mag sec |
11.80 |
|
delta mag (ΔM) |
4.21 |
|
Spectral class |
B9.5V (blue-white) |
|
| Pri motion ra |
+011 |
|
Sec motion ra |
+009 |
|
| Pri motion dec |
-005 |
|
Sec motion dec |
-003 |
|
| Notes |
N
(See Notes) |
|
rPM=0.234 (< 0.3, Physical double)
This double is physical.
21265+5245 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 204401 |
33431 |
21 26 29 +52 44 53 |
BU 369 AB |
2015 |
14 |
31 |
16.0 |
7.59 |
11.80 |
4.21 |
|
<=== |
| Show |
|
33431 |
21 26 29 +52 44 53 |
BU 369 AC |
2014 |
8 |
61 |
49.3 |
7.59 |
12.42 |
4.83 |
|
|
| Show |
|
33431 |
21 26 29 +52 44 53 |
BU 369 AD |
2015 |
6 |
331 |
25.8 |
7.59 |
15.10 |
7.51 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 204401 |
|
Constellation |
Cygnus |
|
SAO |
33431 |
|
HIP |
105867 |
|
| Tycho2 |
3966-00268-1 |
|
Gaia DR2 |
2172760634351847936 |
|
HD |
204401 |
|
ADS |
14989 |
|
| BD |
BD+52 2938 |
|
Distance |
198.81 |
|
Distance ly |
648.52 |
|
