20310+4050 CAN  26AB

 
 
20h 31m 00.20s +40 49' 49.8" P.A. 270.00 sep 2.6 mag 7.80,15.80 Sp O7V
 
 
Coord 2000
20310+4050
Discov num
CAN  26
Comp
AB
Coord arcsec 2000
20 31 00.20 +40 49 49.8
Date first
2008
Date last
2008
Obs
1
Pa first
270
Pa last
270
P.A. Now (θ)
270°
Sep first
2.6
Sep last
2.6
Sep. Now (ρ)
2.6"
Mag pri
7.80
Mag sec
15.80
delta mag (ΔM)
8
Spectral class
O7V (blue)
Pri motion ra
Sec motion ra
Pri motion dec
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.
 
 
20310+4050 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49730 20310+4050 CAN 26 AB 2008 2008 1 270 2.6 7.80 15.80 8.00 <===
Show 49730 20310+4050 CAN 26 AC 1998 2014 4 335 8.3 7.80 12.60 4.80
Show 49730 20310+4050 CAN 26 AD 2008 2008 1 93 8.4 7.80 15.00 7.20
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
270.4
Precise sep
2.56
Constellation
Cygnus
SAO
49730
Tycho2
3157-00776-1
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20310+4050 CAN 26 AB 2008 1 270 2.6 7.80 15.80 O7V V K 203100.20+404949.8

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