20118+3936 COU2415AB

 
 
20h 11m 50.16s +39 36' 28.3" P.A. 155 sep 0.4 mag 9.80,10.20 Sp B8III
 
 
Coord 2000
20118+3936
Discov num
COU2415
Comp
AB
Coord arcsec 2000
20 11 50.16 +39 36 28.3
Date first
1987
Date last
2011
Obs
4
Pa first
138
Pa last
155
P.A. Now (θ)
155°
Sep first
0.3
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
9.80
Mag sec
10.20
delta mag (ΔM)
0.4
Spectral class
B8III (blue-white)
Pri motion ra
-002
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20118+3936 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20118+3936 COU2415 AB 1987 2011 4 155 0.4 9.80 10.20 0.40 <===
Show 20118+3936 ES 1973 AB,C 1922 2011 2 352 4.1 10.60 12.80 2.20
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
154.7
Precise sep
0.36
Constellation
Cygnus
Tycho2
3155-02052-1
HD
228242
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20118+3936 COU2415 AB 2007 3 160 0.4 9.80 10.20 B8III 201150.16+393628.3
20118+3936 COU2415 AB 2011 4 155 0.4 9.80 10.20 B8III 201150.16+393628.3

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