20231+5504 OL   74

 
 
20h 21m 09.13s +55 03' 19.9" P.A. 41 sep 3.9 mag 12.80,12.90
 
 
Coord 2000
20231+5504
Discov num
OL   74
Comp
Coord arcsec 2000
20 21 09.13 +55 03 19.9
Date first
1916
Date last
2015
Obs
4
Pa first
41
Pa last
41
P.A. Now (θ)
41°
Sep first
3.8
Sep last
3.9
Sep. Now (ρ)
3.9"
Mag pri
12.80
Mag sec
12.90
delta mag (ΔM)
0.1
Spectral class
Pri motion ra
-013
Sec motion ra
+073
Pri motion dec
-012
Sec motion dec
+076
Notes
N R (See Notes, Red magnitudes)
rPM=1.168
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
41.1
Precise sep
3.938
Constellation
Cygnus
Gaia DR2
24734214656
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20231+5504 OL 74 2003 3 40 3.9 12.80 12.90 N R 202109.13+550319.9
20231+5504 OL 74 2015 4 41 3.9 12.80 12.90 N R 202109.13+550319.9

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