21376+5546 BU 686 AB (HD 206054)
21h 37m 34.70s +55° 45' 48.7" P.A. 311.00 sep 1.0 mag 9.39,11.22 Sp A dist. 625 pc (2038.75 l.y.)
| Coord 2000 |
21376+5546 |
|
Discov num |
BU 686 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 37 34.70 +55 45 48.7 |
|
| Date first |
1877 |
|
Date last |
2016 |
|
Obs |
17 |
|
| Pa first |
298 |
|
Pa last |
311.2 |
|
P.A. Now (θ) |
311.2° |
|
| Sep first |
0.4 |
|
Sep last |
1.004 |
|
Sep. Now (ρ) |
1.004" |
|
| Mag pri |
9.39 |
|
Mag sec |
11.22 |
|
delta mag (ΔM) |
1.83 |
|
Spectral class |
A (white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
-004 |
|
| Pri motion dec |
-019 |
|
Sec motion dec |
-017 |
|
| Notes |
|
|
rPM=0.19 (< 0.3, Physical double)
This double is physical.
21376+5546 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 206054 |
33594 |
21 37 35 +55 45 49 |
BU 686 AB |
2016 |
17 |
311 |
1.0 |
9.39 |
11.22 |
1.83 |
|
<=== |
| Show |
|
33594 |
21 37 35 +55 45 49 |
STTA 220 AC |
2016 |
22 |
10 |
41.4 |
9.39 |
9.05 |
0.34 |
|
|
| Show |
|
33594 |
21 37 35 +55 45 49 |
STTA 220 AD |
2016 |
9 |
285 |
40.9 |
9.39 |
11.57 |
2.18 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 206054 |
|
Constellation |
Cepheus |
|
SAO |
33594 |
|
HIP |
106762 |
|
| Tycho2 |
3971-00045-1 |
|
Gaia DR2 |
2177670705380862080 |
|
HD |
206054 |
|
BD |
BD+55 2610 |
|
| Distance |
625 |
|
Distance ly |
2038.75 |
|
