20422+5020 BU 675 AE
20h 42m 12.63s +50° 20' 24.1" P.A. 240.00 sep 72.0 mag 5.38,10.64 Sp B2V dist. 390.63 pc (1274.24 l.y.)
| Coord 2000 |
20422+5020 |
|
Discov num |
BU 675 |
|
Comp |
AE |
|
Coord arcsec 2000 |
20 42 12.63 +50 20 24.1 |
|
| Date first |
1899 |
|
Date last |
2015 |
|
Obs |
12 |
|
| Pa first |
240 |
|
Pa last |
239.8 |
|
P.A. Now (θ) |
239.8° |
|
| Sep first |
71.2 |
|
Sep last |
72.045 |
|
Sep. Now (ρ) |
72.045" |
|
| Mag pri |
5.38 |
|
Mag sec |
10.64 |
|
delta mag (ΔM) |
5.26 |
|
Spectral class |
B2V (blue-white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
+005 |
|
| Pri motion dec |
+002 |
|
Sec motion dec |
+000 |
|
| Notes |
N
(See Notes) |
|
rPM=0.721
Nature of this double is uncertain.
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 |
|
