18512+5923 STF2420AB (Omi Dra)

 
 
18h 51m 12.01s +59 23' 17.8" P.A. 319 sep 37.3 mag 4.77,8.26 Sp G7III-IV
 
 
Coord 2000
18512+5923
Discov num
STF2420
Comp
AB
Coord arcsec 2000
18 51 12.01 +59 23 17.8
Date first
1780
Date last
2012
Obs
91
Pa first
0
Pa last
319
P.A. Now (θ)
319°
Sep first
26.7
Sep last
37.3
Sep. Now (ρ)
37.3"
Mag pri
4.77
Mag sec
8.26
delta mag (ΔM)
3.49
Spectral class
G7III-IV (yellow)
Pri motion ra
+078
Sec motion ra
+000
Pri motion dec
+025
Sec motion dec
+000
Notes
N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=1
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
319
Precise sep
37.29
Name
Omi Dra
Constellation
Draco
SAO
31218
Tycho2
3930-01790-1
HD
175306
HR
7125
Bayer
Omicron Draconis
Bayer name
Omi Dra
Flamsteed
47 Draconis
Flamsteed name
47 Dra
last precise pa
319
last precise sep
37.29
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18512+5923 STF2420 AB 2003 83 319 36.5 4.77 8.26 G7III-IV NLD 185112.01+592317.8
18512+5923 STF2420 AB 2010 87 318 37.0 4.77 8.26 G7III-IV NLD 185112.01+592317.8
18512+5923 STF2420 AB 2012 91 319 37.3 4.77 8.26 G7III-IV NLD 185112.01+592317.8

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