20231+4047 J 787 AB
20h 23m 07.30s +40° 46' 55.2" P.A. 165.00 sep 2.6 mag 10.50,11.40 Sp B3
| Coord 2000 |
20231+4047 |
|
Discov num |
J 787 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 23 07.30 +40 46 55.2 |
|
| Date first |
1912 |
|
Date last |
2003 |
|
Obs |
4 |
|
| Pa first |
159 |
|
Pa last |
164.6 |
|
P.A. Now (θ) |
164.6° |
|
| Sep first |
1.8 |
|
Sep last |
2.57 |
|
Sep. Now (ρ) |
2.57" |
|
| Mag pri |
10.50 |
|
Mag sec |
11.40 |
|
delta mag (ΔM) |
0.9 |
|
Spectral class |
B3 (blue-white) |
|
| Pri motion ra |
-007 |
|
Sec motion ra |
|
|
| Pri motion dec |
-000 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
20231+4047 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
20 23 07 +40 46 55 |
J 787 AB |
2003 |
4 |
165 |
2.6 |
10.50 |
11.40 |
0.90 |
|
<=== |
| Show |
|
|
20 23 07 +40 46 55 |
J 787 AC |
2015 |
5 |
112 |
9.5 |
10.50 |
13.00 |
2.50 |
|
|
| Show |
|
|
20 23 07 +40 46 55 |
J 787 AD |
2015 |
5 |
293 |
15.8 |
10.50 |
12.40 |
1.90 |
|
|
| Show |
|
|
20 23 08 +40 46 52 |
J 787 CD |
2015 |
9 |
292 |
25.3 |
13.00 |
12.40 |
0.60 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
2067570459999953024 |
|
