19551+3012 STT 390AB

 
 
19h 55m 06.50s +30 11' 41.6" P.A. 22 sep 9.9 mag 6.63,9.50 Sp B6V+A5V dist. 262.47 pc (856.18 l.y.)
 
 
Coord 2000
19551+3012
Discov num
STT 390
Comp
AB
Coord arcsec 2000
19 55 06.50 +30 11 41.6
Date first
1849
Date last
2013
Obs
31
Pa first
23
Pa last
22
P.A. Now (θ)
22°
Sep first
9.6
Sep last
9.9
Sep. Now (ρ)
9.9"
Mag pri
6.63
Mag sec
9.50
delta mag (ΔM)
2.87
Spectral class
B6V+A5V (blue-white/white)
Pri motion ra
+005
Sec motion ra
+005
Pri motion dec
+001
Sec motion dec
+001
Notes
Nature of this double is uncertain.
 
 
19551+3012 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 69079 19551+3012 STT 390 AB 1849 2013 31 22 9.9 6.63 9.50 2.87 <===
Show 69079 19551+3012 STT 390 AC 1849 2013 15 177 16.4 6.63 11.23 4.60
Show 69079 19551+3012 WAL 121 AD 1944 2013 3 145 55.3 6.63 12.21 5.58
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
22.3
Precise sep
9.89
Constellation
Cygnus
SAO
69079
HIP
98017
Tycho2
2669-05015-1
HD
188651
HR
7607
BD
BD+29 3802
Distance
262.47
Distance ly
856.18
last precise pa
22.3
last precise sep
9.89
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19551+3012 STT 390 AB 2008 25 23 9.6 6.63 9.50 B6V+A5V D 195506.50+301141.6
19551+3012 STT 390 AB 2012 28 22 9.6 6.63 9.50 B6V A5V D 195506.50+301141.6
19551+3012 STT 390 AB 2013 30 25 9.0 6.63 9.50 B6V A5V D 195506.50+301141.6

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