20118+3936 ES 1973AB,C

 
 
20h 11m 50.16s +39 36' 28.3" P.A. 352 sep 4.1 mag 10.60,12.80 Sp B8III
 
 
Coord 2000
20118+3936
Discov num
ES 1973
Comp
AB,C
Coord arcsec 2000
20 11 50.16 +39 36 28.3
Date first
1922
Date last
2011
Obs
2
Pa first
358
Pa last
352
P.A. Now (θ)
352°
Sep first
4.3
Sep last
4.1
Sep. Now (ρ)
4.1"
Mag pri
10.60
Mag sec
12.80
delta mag (ΔM)
2.2
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
351.7
Precise sep
4.07
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 ES 1973 AB,C 1922 1 358 4.3 10.60 12.80 B8III 201150.16+393628.3
20118+3936 ES 1973 AB,C 2011 2 352 4.1 10.60 12.80 B8III 201150.16+393628.3

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