21309+7020 BKO 773 BC
21h 30m 54.28s +70° 20' 21.8" P.A. 321.00 sep 10.2 mag 11.00,13.50
| Coord 2000 |
21309+7020 |
|
Discov num |
BKO 773 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 30 54.28 +70 20 21.8 |
|
| Date first |
2000 |
|
Date last |
2015 |
|
Obs |
7 |
|
| Pa first |
320 |
|
Pa last |
320.9 |
|
P.A. Now (θ) |
320.9° |
|
| Sep first |
10.2 |
|
Sep last |
10.178 |
|
Sep. Now (ρ) |
10.178" |
|
| Mag pri |
11.00 |
|
Mag sec |
13.50 |
|
delta mag (ΔM) |
2.5 |
|
Spectral class |
|
|
| Pri motion ra |
-006 |
|
Sec motion ra |
-009 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-004 |
|
| Notes |
|
|
rPM=0.431
Nature of this double is uncertain.
21309+7020 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 30 52 +70 20 17 |
CSR 2 AB |
2015 |
11 |
69 |
12.4 |
10.70 |
11.04 |
0.34 |
|
|
| Show |
|
|
21 30 54 +70 20 22 |
BKO 773 BC |
2015 |
7 |
321 |
10.2 |
11.00 |
13.50 |
2.50 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
Tycho2 |
4465-02319-1 |
|
Gaia DR2 |
2272131024932424192 |
|
