20311+4203 CAN  25AB

 
 
20h 31m 08.38s +42 02' 42.3" P.A. 221.00 sep 4.2 mag 7.00,15.40 Sp O9.7II
 
 
Coord 2000
20311+4203
Discov num
CAN  25
Comp
AB
Coord arcsec 2000
20 31 08.38 +42 02 42.3
Date first
2008
Date last
2008
Obs
2
Pa first
221
Pa last
221
P.A. Now (θ)
221°
Sep first
4.2
Sep last
4.2
Sep. Now (ρ)
4.2"
Mag pri
7.00
Mag sec
15.40
delta mag (ΔM)
8.4
Spectral class
O9.7II (blue)
Pri motion ra
-003
Sec motion ra
Pri motion dec
-001
Sec motion dec
Notes
V K (Proper motion indicates physical, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star This double is physical.
 
 
20311+4203 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20311+4203 CAN 2 Aa,Ab 2006 2008 3 258 0.3 11.80 15.00 3.20
Show 20311+4203 CAN 25 AB 2008 2008 2 221 4.2 7.00 15.40 8.40 <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
220.6
Precise sep
4.22
Constellation
Cygnus
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20311+4203 CAN 25 AB 2008 2 221 4.2 7.00 15.40 O9.7II V K 203108.38+420242.3

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