21017+2938 RBR 51 Aa,Ab
21h 01m 43.49s +29° 37' 48.5" P.A. 181.00 sep 0.6 mag 8.00,13.00 Sp B8 dist. 392.16 pc (1279.23 l.y.)
| Coord 2000 |
21017+2938 |
|
Discov num |
RBR 51 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
21 01 43.49 +29 37 48.5 |
|
| Date first |
2005 |
|
Date last |
2005 |
|
Obs |
1 |
|
| Pa first |
181 |
|
Pa last |
180.8 |
|
P.A. Now (θ) |
180.8° |
|
| Sep first |
0.6 |
|
Sep last |
0.6 |
|
Sep. Now (ρ) |
0.6" |
|
| Mag pri |
8.00 |
|
Mag sec |
13.00 |
|
delta mag (ΔM) |
5 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
+003 |
|
Sec motion ra |
|
|
| Pri motion dec |
-002 |
|
Sec motion dec |
|
|
| Notes |
|
|
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
| Constellation |
Cygnus |
|
SAO |
89380 |
|
HIP |
103775 |
|
Tycho2 |
2184-02142-1 |
|
| Gaia DR2 |
1852409297303706752 |
|
HD |
200289 |
|
BD |
BD+29 4282 |
|
Distance |
392.16 |
|
| Distance ly |
1279.23 |
|
