20179+3845 SLE 990

 
 
20h 17m 56.28s +38 44' 28.8" P.A. 274 sep 8.9 mag 11.70,13.30
 
 
Coord 2000
20179+3845
Discov num
SLE 990
Comp
Coord arcsec 2000
20 17 56.28 +38 44 28.8
Date first
1985
Date last
2015
Obs
8
Pa first
278
Pa last
274
P.A. Now (θ)
274°
Sep first
8.2
Sep last
8.9
Sep. Now (ρ)
8.9"
Mag pri
11.70
Mag sec
13.30
delta mag (ΔM)
1.6
Spectral class
Pri motion ra
+001
Sec motion ra
-022
Pri motion dec
-003
Sec motion dec
-014
Notes
R (Red magnitudes)
rPM=0.978
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
273.5
Precise sep
8.944
Constellation
Cygnus
SAO
69789
Gaia DR2
52408240768
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20179+3845 SLE 990 1998 2 275 8.6 11.90 12.30 D 201756.19+384438.8
20179+3845 SLE 990 2002 3 275 8.7 11.70 13.30 R 201756.28+384428.8
20179+3845 SLE 990 2010 4 269 7.8 11.70 13.30 R 201756.28+384428.8
20179+3845 SLE 990 2015 4 274 8.9 11.70 13.30 R 201756.28+384428.8

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