21209+4127 HO 156 AB (HD 203426)
21h 20m 53.71s +41° 26' 31.4" P.A. 50.00 sep 2.2 mag 7.69,11.29 Sp G5 dist. 505.05 pc (1647.47 l.y.)
| Coord 2000 |
21209+4127 |
|
Discov num |
HO 156 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 20 53.71 +41 26 31.4 |
|
| Date first |
1885 |
|
Date last |
2015 |
|
Obs |
12 |
|
| Pa first |
45 |
|
Pa last |
50.3 |
|
P.A. Now (θ) |
50.3° |
|
| Sep first |
1.7 |
|
Sep last |
2.187 |
|
Sep. Now (ρ) |
2.187" |
|
| Mag pri |
7.69 |
|
Mag sec |
11.29 |
|
delta mag (ΔM) |
3.6 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-014 |
|
Sec motion ra |
-012 |
|
| Pri motion dec |
-021 |
|
Sec motion dec |
-021 |
|
| Notes |
|
|
rPM=0.079 (< 0.3, Physical double)
This double is physical.
21209+4127 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
50736 |
21 20 54 +41 26 31 |
HO 156 Aa,Ab |
2015 |
2 |
42 |
0.3 |
7.69 |
|
|
|
|
| Show |
HD 203426 |
50736 |
21 20 54 +41 26 31 |
HO 156 AB |
2015 |
12 |
50 |
2.2 |
7.69 |
11.29 |
3.60 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 203426 |
|
Constellation |
Cygnus |
|
SAO |
50736 |
|
HIP |
105397 |
|
| Tycho2 |
3190-00075-1 |
|
HD |
203426 |
|
BD |
BD+40 4496 |
|
Distance |
505.05 |
|
| Distance ly |
1647.47 |
|
