20177+3740 SLE 989

 
 
20h 17m 44.92s +37 40' 30.3" P.A. 223 sep 9.1 mag 12.30,13.60
 
 
Coord 2000
20177+3740
Discov num
SLE 989
Comp
Coord arcsec 2000
20 17 44.92 +37 40 30.3
Date first
1985
Date last
2015
Obs
4
Pa first
218
Pa last
223
P.A. Now (θ)
223°
Sep first
9.0
Sep last
9.1
Sep. Now (ρ)
9.1"
Mag pri
12.30
Mag sec
13.60
delta mag (ΔM)
1.3
Spectral class
Pri motion ra
-008
Sec motion ra
-008
Pri motion dec
-016
Sec motion dec
-009
Notes
R (Red magnitudes)
rPM=0.391
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
222.6
Precise sep
9.129
Constellation
Cygnus
SAO
69766
Gaia DR2
32560497152
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20177+3740 SLE 989 1998 2 222 9.4 11.90 12.50 D 201744.81+374024.5
20177+3740 SLE 989 2002 3 222 9.3 12.30 13.60 R 201744.92+374030.3
20177+3740 SLE 989 2015 4 223 9.1 12.30 13.60 R 201744.92+374030.3

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