21388+5548 BU 687 AC
21h 38m 45.74s +55° 47' 29.8" P.A. 203.00 sep 54.5 mag 8.11,10.69 Sp A0
| Coord 2000 |
21388+5548 |
|
Discov num |
BU 687 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 38 45.74 +55 47 29.8 |
|
| Date first |
1906 |
|
Date last |
2014 |
|
Obs |
15 |
|
| Pa first |
203 |
|
Pa last |
203.3 |
|
P.A. Now (θ) |
203.3° |
|
| Sep first |
54.2 |
|
Sep last |
54.452 |
|
Sep. Now (ρ) |
54.452" |
|
| Mag pri |
8.11 |
|
Mag sec |
10.69 |
|
delta mag (ΔM) |
2.58 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+009 |
|
Sec motion ra |
+009 |
|
| Pri motion dec |
+004 |
|
Sec motion dec |
+002 |
|
| Notes |
|
|
rPM=0.203 (< 0.3, Physical double)
This double is physical.
21388+5548 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 206222 |
33622 |
21 38 46 +55 47 30 |
BU 687 AB |
2008 |
26 |
1 |
0.6 |
8.11 |
9.54 |
1.43 |
|
|
| Show |
|
33622 |
21 38 46 +55 47 30 |
BU 687 AC |
2014 |
15 |
203 |
54.5 |
8.11 |
10.69 |
2.58 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
SAO |
33622 |
|
Tycho2 |
3971-02054-1 |
|
Gaia DR2 |
2174674982871761280 |
|
| HD |
206222 |
|
