20181+4044 STF2666CD

 
 
20h 18m 05.63s +40 43' 24.9" P.A. 143 sep 24.2 mag 10.70,11.00 Sp B8V+B9V
 
 
Coord 2000
20181+4044
Discov num
STF2666
Comp
CD
Coord arcsec 2000
20 18 05.63 +40 43 24.9
Date first
1892
Date last
2013
Obs
7
Pa first
144
Pa last
143
P.A. Now (θ)
143°
Sep first
24.4
Sep last
24.2
Sep. Now (ρ)
24.2"
Mag pri
10.70
Mag sec
11.00
delta mag (ΔM)
0.3
Spectral class
B8V+B9V (blue-white/blue-white)
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
-007
Sec motion dec
-006
Notes
N (See Notes)
rPM=0.137 (< 0.3, Physical double)
This double is physical.
 
 
20181+4044 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49438 20181+4044 CHR 96 Aa,Ab 1985 2010 25 171 0.0 6.60 6.80 0.20 Y
Show 20181+4044 STF2666 AB 1831 2013 81 246 2.7 5.96 8.24 2.28
Show 20181+4044 STF2666 AC 1887 2006 13 207 34.0 5.96 10.70 4.74
Show 20181+4044 TAR 5 AD 1887 2006 8 181 49.6 5.96 11.00 5.04
Show 20181+4044 STF2666 CD 1892 2013 7 143 24.2 10.70 11.00 0.30 <===
Quintuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
142.7
Precise sep
24.22
Constellation
Cygnus
last precise pa
142.7
last precise sep
24.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20181+4044 STF2666 CD 2006 5 143 24.3 11.11 10.40 D 201805.63+404324.9
20181+4044 STF2666 CD 2013 7 143 24.2 10.70 11.00 B8V+B9V N 201805.63+404324.9

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