20318+4118 CAN 4 AB

20h 31m 45.40s +41° 18' 26.8" P.A. 38.00 sep 1.3 mag 12.30,15.10 Sp O8I

Coord 2000 20318+4118 Discov num CAN   4 Comp AB Coord arcsec 2000 20 31 45.40 +41 18 26.8
Date first 2008 Date last 2008 Obs 2
Pa first 38 Pa last 37.6 P.A. Now (θ) 37.6°
Sep first 1.3 Sep last 1.31 Sep. Now (ρ) 1.31"
Mag pri 12.30 Mag sec 15.10 delta mag (ΔM) 2.8 Spectral class O8I (blue)
Pri motion ra -006 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes V (Proper motion indicates physical)




This double is physical.



20318+4118 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 31 45 +41 18 27 CAN 4 AB 2008 2 38 1.3 12.30 15.10 2.80 <===
Show 20 31 45 +41 18 27 CAN 32 AC 2008 2 282 6.4 7.30 13.20 5.90
Show 20 31 45 +41 18 27 CAN 32 AD 2008 2 338 6.9 7.30 12.90 5.60
Show 20 31 45 +41 18 27 CAN 32 AE 2008 2 0 8.0 7.30 14.40 7.10
Show 20 31 45 +41 18 27 CAN 32 AF 2008 1 226 9.0 7.30 15.50 8.20
Show 20 31 45 +41 18 27 CAN 32 AG 2008 1 348 11.9 7.30 15.60 8.30
Show 20 31 45 +41 18 27 CAN 32 AH 2008 3 183 13.0 7.30 13.40 6.10


Octuple system
8 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Cygnus