21104+4253 BRT 1144 BC
21h 10m 21.54s +42° 52' 21.4" P.A. 309.00 sep 3.3 mag 11.80,12.10
| Coord 2000 |
21104+4253 |
|
Discov num |
BRT1144 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 10 21.54 +42 52 21.4 |
|
| Date first |
1895 |
|
Date last |
2018 |
|
Obs |
4 |
|
| Pa first |
308 |
|
Pa last |
308.7 |
|
P.A. Now (θ) |
308.7° |
|
| Sep first |
3.0 |
|
Sep last |
3.337 |
|
Sep. Now (ρ) |
3.337" |
|
| Mag pri |
11.80 |
|
Mag sec |
12.10 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
|
|
| Pri motion ra |
+011 |
|
Sec motion ra |
|
|
| Pri motion dec |
-012 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
21104+4253 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 10 21 +42 52 26 |
BRT 1144 AB |
2016 |
1 |
19 |
2.9 |
11.60 |
11.80 |
0.20 |
|
|
| Show |
|
|
21 10 21 +42 52 26 |
BRT 1144 AC |
2016 |
2 |
341 |
5.1 |
11.60 |
12.10 |
0.50 |
|
|
| Show |
|
|
21 10 22 +42 52 21 |
BRT 1144 BC |
2018 |
4 |
309 |
3.3 |
11.80 |
12.10 |
0.30 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
1969862874602906368 |
|
