21017+2938 COU 1180 AB (HD 200289)
21h 01m 43.49s +29° 37' 48.5" P.A. 204.00 sep 3.7 mag 7.99,11.21 Sp B8 dist. 392.16 pc (1279.23 l.y.)
| Coord 2000 |
21017+2938 |
|
Discov num |
COU1180 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 01 43.49 +29 37 48.5 |
|
| Date first |
1974 |
|
Date last |
2005 |
|
Obs |
7 |
|
| Pa first |
206 |
|
Pa last |
204.3 |
|
P.A. Now (θ) |
204.3° |
|
| Sep first |
3.7 |
|
Sep last |
3.65 |
|
Sep. Now (ρ) |
3.65" |
|
| Mag pri |
7.99 |
|
Mag sec |
11.21 |
|
delta mag (ΔM) |
3.22 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
+003 |
|
Sec motion ra |
+001 |
|
| Pri motion dec |
-002 |
|
Sec motion dec |
-005 |
|
| Notes |
|
|
rPM=0.707
Nature of this double is uncertain.
21017+2938 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
89380 |
21 01 43 +29 37 48 |
RBR 51 Aa,Ab |
2005 |
1 |
181 |
0.6 |
8.00 |
13.00 |
5.00 |
|
|
| Show |
HD 200289 |
89380 |
21 01 43 +29 37 48 |
COU 1180 AB |
2005 |
7 |
204 |
3.7 |
7.99 |
11.21 |
3.22 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200289 |
|
Constellation |
Cygnus |
|
SAO |
89380 |
|
HIP |
103775 |
|
| Tycho2 |
2184-02142-1 |
|
HD |
200289 |
|
BD |
BD+29 4282 |
|
Distance |
392.16 |
|
| Distance ly |
1279.23 |
|
