18512+5923 STF2420AC

 
 
18h 51m 12.01s +59 23' 17.8" P.A. 325 sep 140.9 mag 4.77,12.67 Sp G7III-IV
 
 
Coord 2000
18512+5923
Discov num
STF2420
Comp
AC
Coord arcsec 2000
18 51 12.01 +59 23 17.8
Date first
1960
Date last
2003
Obs
3
Pa first
326
Pa last
325
P.A. Now (θ)
325°
Sep first
139.4
Sep last
140.9
Sep. Now (ρ)
140.9"
Mag pri
4.77
Mag sec
12.67
delta mag (ΔM)
7.9
Spectral class
G7III-IV (yellow)
Pri motion ra
+078
Sec motion ra
+000
Pri motion dec
+025
Sec motion dec
-003
Notes
N (See Notes)
rPM=1.012
This double is not physical.
 
 
18512+5923 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 31218 18512+5923 CIA 8 Aa,Ab 2012 2014 6 202 0.0 4.77 11.00 6.23 Y
Show Omi Dra 31218 18512+5923 STF2420 AB 1780 2012 91 319 37.3 4.77 8.26 3.49
Show 18512+5923 STF2420 AC 1960 2003 3 325 140.9 4.77 12.67 7.90 <===
Show 18512+5923 STF2420 BC 1880 2003 5 326 103.9 8.26 12.67 4.41
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
324.5
Precise sep
140.91
Constellation
Draco
last precise pa
324.5
last precise sep
140.91
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18512+5923 STF2420 AC 1999 4 324 140.5 4.77 11.50 G7III-IV N D 185112.01+592317.8
18512+5923 STF2420 AC 2003 5 324 140.9 4.77 11.50 G7III-IV N D 185112.01+592317.8

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