20171+3738 SLE 986AC

 
 
20h 17m 03.70s +37 38' 24.8" P.A. 2 sep 18 mag 10.78,12.40
 
 
Coord 2000
20171+3738
Discov num
SLE 986
Comp
AC
Coord arcsec 2000
20 17 03.70 +37 38 24.8
Date first
1929
Date last
2015
Obs
10
Pa first
2
Pa last
2
P.A. Now (θ)
Sep first
18.0
Sep last
18.0
Sep. Now (ρ)
18"
Mag pri
10.78
Mag sec
12.40
delta mag (ΔM)
1.62
Spectral class
Pri motion ra
-000
Sec motion ra
+003
Pri motion dec
-004
Sec motion dec
+010
Notes
rPM=1.371
This double is not physical.
 
 
20171+3738 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20171+3738 SLE 986 AB 1985 2015 7 353 6.3 10.78 15.10 4.32
Show 20171+3738 SLE 986 AC 1929 2015 10 2 18.0 10.78 12.40 1.62 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
1.8
Precise sep
17.965
Constellation
Cygnus
SAO
69754
Tycho2
3151-01063-1
Gaia DR2
85010192256
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20171+3738 SLE 986 AC 1998 4 2 17.9 11.70 11.70 D 201703.59+373819.6
20171+3738 SLE 986 AC 2002 5 2 17.8 10.78 12.40 201703.70+373824.8
20171+3738 SLE 986 AC 2015 6 2 18.0 10.78 12.40 201703.70+373824.8

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