21105+4742 STTA 215 AC
21h 10m 30.96s +47° 41' 32.0" P.A. 189.00 sep 136.7 mag 6.55,7.52 Sp B6IV
| Coord 2000 |
21105+4742 |
|
Discov num |
STTA215 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 10 30.96 +47 41 32.0 |
|
| Date first |
1875 |
|
Date last |
2012 |
|
Obs |
22 |
|
| Pa first |
190 |
|
Pa last |
188.9 |
|
P.A. Now (θ) |
188.9° |
|
| Sep first |
134.1 |
|
Sep last |
136.7 |
|
Sep. Now (ρ) |
136.7" |
|
| Mag pri |
6.55 |
|
Mag sec |
7.52 |
|
delta mag (ΔM) |
0.97 |
|
Spectral class |
B6IV (blue-white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-018 |
|
| Notes |
N
(See Notes) |
|
rPM=0.751
Nature of this double is uncertain.
21105+4742 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 201836 |
50536 |
21 10 31 +47 41 32 |
BU 159 AB |
2014 |
27 |
313 |
1.2 |
6.55 |
9.07 |
2.52 |
|
|
| Show |
|
50536 |
21 10 31 +47 41 32 |
STTA 215 AC |
2012 |
22 |
189 |
136.7 |
6.55 |
7.52 |
0.97 |
|
<=== |
| Show |
|
50536 |
21 10 31 +47 41 32 |
BU 159 AD |
2015 |
7 |
145 |
14.8 |
6.55 |
13.50 |
6.95 |
|
|
| Show |
|
50536 |
21 10 31 +47 41 32 |
LV 23 AE |
2015 |
3 |
338 |
46.8 |
6.55 |
13.50 |
6.95 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
50536 |
|
Tycho2 |
3592-07442-1 |
|
Gaia DR2 |
2165256123904303488 |
|
| HD |
201837 |
|
HR |
8107 |
|
ADS |
14720 |
|
