18512+5923 CIA   8Aa,Ab

 
 
18h 51m 12.01s +59 23' 17.8" P.A. 202 mag 4.77,11.00 Sp G7III-IV dist. 104.82 pc (341.92 l.y.)
 
 
Coord 2000
18512+5923
Discov num
CIA   8
Comp
Aa,Ab
Coord arcsec 2000
18 51 12.01 +59 23 17.8
Date first
2012
Date last
2014
Obs
6
Pa first
23
Pa last
202
P.A. Now (θ)
202°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
4.77
Mag sec
11.00
delta mag (ΔM)
6.23
Spectral class
G7III-IV (yellow)
Pri motion ra
+078
Sec motion ra
Pri motion dec
+025
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is 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
202
Precise sep
0.006
Cdsa2 id
CIA 8 Aa,Ab
Constellation
Draco
SAO
31218
HIP
92512
HD
175306
HR
7125
GC
25905
ADS
11779
DM
BD+59 1925
Bayer
Omicron Draconis
Bayer name
Omi Dra
Flamsteed
47 Draconis
Flamsteed name
47 Dra
Ra deg
18.853336111111112
De deg
59.38827777777778
Distance
104.82
Distance ly
341.92
last precise pa
202
last precise sep
0.006
 
 
ORBITAL ELEMENTS
 
 
Period (P)138.444d± 0.003 Periastron (T)54983d (2009.414y)± 0.2 Semi-major axis (a)6.51m± 0.03
Eccentricity (e)0.158± 0.003 Inclination (i)89.6°± 0.3 Longitude of periastron (ω)293°± 0.6
Node (Ω)22.9°± 0.2 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000-01-01 0.006 23.0
2001-01-01 0.006 203.1
2002-01-01 0.001 199.7
2003-01-01 0.005 22.7
2004-01-01 0.007 202.9
2005-01-01 0.002 24.2
2006-01-01 0.002 21.8
2007-01-01 0.006 202.7
2008-01-01 0.005 23.3
2009-01-01 0.002 203.9
2010-01-01 0.004 202.3
2011-01-01 0.006 23.0
2012-01-01 0.005 203.1
2013-01-01 0.002 201.1
2014-01-01 0.005 22.8
2015-01-01 0.007 202.9
2016-01-01 0.001 25.0
2017-01-01 0.003 22.2
2018-01-01 0.006 202.7
2019-01-01 0.004 23.4
2020-01-01 0.001 204.7
2021-01-01 0.005 202.4
2022-01-01 0.006 23.1
2023-01-01 0.005 203.2
2024-01-01 0.002 201.7
2025-01-01 0.006 22.8
2026-01-01 0.007 203.0
2027-01-01 0.001 27.3
2028-01-01 0.004 22.4
2029-01-01 0.007 202.8
2030-01-01 0.004 23.6

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds18512%2B5923a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18512+5923 CIA 8 Aa,Ab 2014 6 202 0.0 4.77 11.00 G7III-IV NO 185112.01+592317.8

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