12006+6911 A  1088 (OR Dra)

 
 
12H 00M 37.54S +69 11' 07.8" P.A. 49.1 SEP 0.04 MAG 7.88,8.81 SP F2V DIST. 206.19 PC (672.59 L.Y.)
 
 
Coord 2000
12006+6911
Discov num
A  1088
Comp
Coord arcsec 2000
12 00 37.54 +69 11 07.8
Date first
1905
Date last
1993
Obs
36
Pa first
223
Pa last
320
P.A. Now (θ)
49.1°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.04"
Mag pri
7.88
Mag sec
8.81
delta mag (ΔM)
0.93
Spectral class
F2V (yellow-white)
Pri motion ra
-019
Sec motion ra
Pri motion dec
-012
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
OR Dra
Constellation
Draco
SAO
15686
HIP
58567
Tycho2
4393-00948-1
HD
104288
ADS
8387
BD
BD+69 636
Distance
206.19
Distance ly
672.59
last precise pa
319.6
last precise sep
0.119
 
 
ORBITAL ELEMENTS
 
 
Period (P)134.9y Periastron (T)2017.3y Semi-major axis (a)0.356a
Eccentricity (e)0.805 Inclination (i)75.5° Longitude of periastron (ω)67.3°
Node (Ω)29.5° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1993
label rho theta
2000 0.119 340.7
2001 0.121 344.2
2002 0.123 347.6
2003 0.125 350.9
2004 0.127 354.0
2005 0.129 357.1
2006 0.131 0.1
2007 0.132 3.0
2008 0.133 5.9
2009 0.134 8.7
2010 0.134 11.5
2011 0.132 14.3
2012 0.130 17.2
2013 0.124 20.3
2014 0.115 23.8
2015 0.101 28.1
2016 0.078 34.4
2017 0.043 49.1
2018 0.020 140.2
2019 0.056 191.0
2020 0.094 200.4
2021 0.126 204.6
2022 0.153 207.2
2023 0.176 209.1
2024 0.196 210.5
2025 0.214 211.7
2026 0.230 212.7
2027 0.244 213.6
2028 0.256 214.4
2029 0.268 215.2
2030 0.278 215.8

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic