20181+4044 STF2666AC

 
 
20h 18m 06.99s +40 43' 55.6" P.A. 207 sep 34 mag 5.96,10.70 Sp O9V+B8V dist. 595.24 pc (1941.67 l.y.)
 
 
Coord 2000
20181+4044
Discov num
STF2666
Comp
AC
Coord arcsec 2000
20 18 06.99 +40 43 55.6
Date first
1887
Date last
2006
Obs
13
Pa first
209
Pa last
207
P.A. Now (θ)
207°
Sep first
33.7
Sep last
34.0
Sep. Now (ρ)
34"
Mag pri
5.96
Mag sec
10.70
delta mag (ΔM)
4.74
Spectral class
O9V+B8V (blue/blue-white)
Pri motion ra
-003
Sec motion ra
-002
Pri motion dec
-007
Sec motion dec
-007
Notes
N (See Notes)
rPM=0.131 (< 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 25 178 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 2018 9 143 24.1 10.70 11.00 0.30
Quintuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
206.6
Precise sep
33.98
Constellation
Cygnus
SAO
49438
HIP
100069
Tycho2
3155-02321-1
Gaia DR2
26011542272
HD
193322
HR
7767
BD
BD+40 4103
Distance
595.24
Distance ly
1941.67
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20181+4044 STF2666 AC 2006 12 207 34.0 5.80 11.11 O9V D 201806.99+404355.6

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