20123+3451 AG  249AB

 
 
20h 12m 18.31s +34 51' 10.7" P.A. 132 sep 32.6 mag 7.96,10.78 Sp K2V dist. 531.91 pc (1735.09 l.y.)
 
 
Coord 2000
20123+3451
Discov num
AG  249
Comp
AB
Coord arcsec 2000
20 12 18.31 +34 51 10.7
Date first
1896
Date last
2012
Obs
12
Pa first
133
Pa last
132
P.A. Now (θ)
132°
Sep first
34.6
Sep last
32.6
Sep. Now (ρ)
32.6"
Mag pri
7.96
Mag sec
10.78
delta mag (ΔM)
2.82
Spectral class
K2V (yellow-orange)
Pri motion ra
+016
Sec motion ra
+002
Pri motion dec
-007
Sec motion dec
-002
Notes
rPM=0.851
This double is not physical.
 
 
20123+3451 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 69595 20123+3451 AG 249 AB 1896 2012 12 132 32.6 7.96 10.78 2.82 <===
Show 69595 20123+3451 AG 249 AC 1902 2002 2 31 13.0 7.96 14.00 6.04
Show 69595 20123+3451 AG 249 CD 2002 2002 1 351 6.2 14.00 13.80 0.20
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
132.4
Precise sep
32.59
Constellation
Cygnus
SAO
69595
HIP
99562
Tycho2
2679-02011-1
HD
192164
BD
BD+34 3910
Distance
531.91
Distance ly
1735.09
last precise pa
132.4
last precise sep
32.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20123+3451 AG 249 AB 2008 10 132 33.1 7.96 10.78 K2V D 201218.31+345110.7
20123+3451 AG 249 AB 2012 12 132 32.6 7.96 10.78 K2V D 201218.31+345110.7

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