20509+4421 CHN 30 Aa,Ab
20h 50m 53.69s +44° 21' 18.5" P.A. 108.00 sep 0.6 mag 18.20,18.20
| Coord 2000 |
20509+4421 |
|
Discov num |
CHN 30 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 50 53.69 +44 21 18.5 |
|
| Date first |
2015 |
|
Date last |
2015 |
|
Obs |
1 |
|
| Pa first |
108 |
|
Pa last |
107.6 |
|
P.A. Now (θ) |
107.6° |
|
| Sep first |
0.6 |
|
Sep last |
0.62 |
|
Sep. Now (ρ) |
0.62" |
|
| Mag pri |
18.20 |
|
Mag sec |
18.20 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
|
|
| Pri motion ra |
+009 |
|
Sec motion ra |
|
|
| Pri motion dec |
-009 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
20509+4421 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
20 50 54 +44 21 18 |
CHN 30 Aa,Ab |
2015 |
1 |
108 |
0.6 |
18.20 |
18.20 |
0.00 |
|
<=== |
| Show |
|
|
20 50 54 +44 21 18 |
CHN 30 AB |
2015 |
6 |
92 |
2.7 |
17.50 |
16.90 |
0.60 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
2163139770168205312 |
|
