20422+5020 BU 675 AC
20h 42m 12.63s +50° 20' 24.1" P.A. 185.00 sep 28.8 mag 5.38,11.40 Sp B2V dist. 390.63 pc (1274.24 l.y.)
Coord 2000 |
20422+5020 |
|
Discov num |
BU 675 |
|
Comp |
AC |
|
Coord arcsec 2000 |
20 42 12.63 +50 20 24.1 |
|
Date first |
1878 |
|
Date last |
2015 |
|
Obs |
11 |
|
Pa first |
182 |
|
Pa last |
184.9 |
|
P.A. Now (θ) |
184.9° |
|
Sep first |
25.4 |
|
Sep last |
28.839 |
|
Sep. Now (ρ) |
28.839" |
|
Mag pri |
5.38 |
|
Mag sec |
11.40 |
|
delta mag (ΔM) |
6.02 |
|
Spectral class |
B2V (blue-white) |
|
Pri motion ra |
+002 |
|
Sec motion ra |
-006 |
|
Pri motion dec |
+002 |
|
Sec motion dec |
-029 |
|
Notes |
N
(See Notes) |
|
rPM=1.081
This double is not physical.
20422+5020 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
51 Cyg |
32809 |
20 42 13 +50 20 24 |
BU 675 AB |
2015 |
9 |
102 |
3.3 |
5.38 |
12.40 |
7.02 |
|
|
Show |
|
32809 |
20 42 13 +50 20 24 |
BU 675 AC |
2015 |
11 |
185 |
28.8 |
5.38 |
11.40 |
6.02 |
|
<=== |
Show |
|
32809 |
20 42 13 +50 20 24 |
BU 675 AD |
2015 |
10 |
329 |
33.3 |
5.38 |
11.40 |
6.02 |
|
|
Show |
|
32809 |
20 42 13 +50 20 24 |
BU 675 AE |
2015 |
12 |
240 |
72.0 |
5.38 |
10.64 |
5.26 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
SAO |
32809 |
|
HIP |
102177 |
|
Tycho2 |
3582-02132-1 |
|
Gaia DR2 |
2180349566689555200 |
|
HD |
197511 |
|
HR |
7929 |
|
GC |
28865 |
|
ADS |
14189 |
|
BD |
BD+49 3353 |
|
Flamsteed |
51 Cygni |
|
Flamsteed name |
51 Cyg |
|
Distance |
390.63 |
|
Distance ly |
1274.24 |
|