20546+4042 ES 1685 BC
20h 54m 44.02s +40° 41' 45.9" P.A. 74.00 sep 2.8 mag 14.00,14.50
| Coord 2000 |
20546+4042 |
|
Discov num |
ES 1685 |
|
Comp |
BC |
|
Coord arcsec 2000 |
20 54 44.02 +40 41 45.9 |
|
| Date first |
1917 |
|
Date last |
2015 |
|
Obs |
4 |
|
| Pa first |
75 |
|
Pa last |
73.5 |
|
P.A. Now (θ) |
73.5° |
|
| Sep first |
1.7 |
|
Sep last |
2.757 |
|
Sep. Now (ρ) |
2.757" |
|
| Mag pri |
14.00 |
|
Mag sec |
14.50 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
|
|
| Pri motion ra |
+013 |
|
Sec motion ra |
|
|
| Pri motion dec |
-004 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
20546+4042 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
20 54 42 +40 41 39 |
ES 1685 AB |
2015 |
5 |
73 |
24.2 |
11.02 |
14.00 |
2.98 |
|
|
| Show |
|
|
20 54 44 +40 41 46 |
ES 1685 BC |
2015 |
4 |
74 |
2.8 |
14.00 |
14.50 |
0.50 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
2065478742206987392 |
|
