20108+3713 TOB 174AB

 
 
20h 10m 52.52s +37 12' 28.1" P.A. 263 sep 25.1 mag 11.07,12.59 Sp B5:
 
 
Coord 2000
20108+3713
Discov num
TOB 174
Comp
AB
Coord arcsec 2000
20 10 52.52 +37 12 28.1
Date first
1983
Date last
2015
Obs
8
Pa first
261
Pa last
263
P.A. Now (θ)
263°
Sep first
24.4
Sep last
25.1
Sep. Now (ρ)
25.1"
Mag pri
11.07
Mag sec
12.59
delta mag (ΔM)
1.52
Spectral class
B5: (blue-white)
Pri motion ra
-002
Sec motion ra
+002
Pri motion dec
-007
Sec motion dec
+005
Notes
rPM=1.737
This double is not physical.
 
 
20108+3713 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20108+3713 TOB 174 AB 1983 2015 8 263 25.1 11.07 12.59 1.52 <===
Show 20108+3713 SLE 952 BC 1985 2015 8 91 6.8 12.59 12.83 0.24
Show 20108+3713 SLE 952 BD 1985 2015 8 353 12.2 12.59 13.58 0.99
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
262.6
Precise sep
25.096
Constellation
Cygnus
Tycho2
2683-01307-1
Gaia DR2
98963848576
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20108+3713 TOB 174 AB 1998 2 263 25.2 11.07 12.59 D 201052.52+371228.1
20108+3713 TOB 174 AB 2002 3 263 25.2 11.07 12.59 D 201052.52+371228.1
20108+3713 TOB 174 AB 2015 4 263 25.1 11.07 12.59 B5: 201052.52+371228.1

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