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
Cdsa2 id
STF 2420 AB
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
Ra deg
18.853336111111112
De deg
59.38827777777778
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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