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Doubles in session


Current system
12006+6911
A 1088
OR Dra


Nearby doubles
18' : 12025+6925
CVR1401

36' : 12071+6905
STF1602AB

36' : 12056+6848
STF1599AB

41' : 11589+6832
TDS8147

42' : 12060+6842
STF3123AB

57' : 11512+6846
UC 2220AB

58' : 12027+6815
LDS2624

60' : 11520+6832
GRV1065

66' : 12069+7008
SKF 237

71' : 12120+6836
STF1611

72' : 12139+6926
LDS1750

77' : 12061+7022
A 76AB

81' : 12098+6809
LDS1281

88' : 11471+7002
NSN 621

88' : 12169+6902
KPP3864AB

89' : 12001+7039
BU 795AB

93' : 12160+6831
TDS8291

95' : 11505+7029
CRB 190

97' : 12180+6848
STT 246

99' : 12157+6818
LDS2637

100' : 12016+7051
STF1590

103' : 12168+7009
STF1626

106' : 12039+6728
LDS2626

111' : 11420+6818
GRV1061

114' : 11502+7051
HJ 2587

118' : 11531+6721
SLW 665



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

12006+6911 A 1088 (OR Dra)

 
 
12h 00m 37.54s +69° 11' 07.8" P.A. 2.00 sep 0.2 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 2010 Obs 37
Pa first 223 Pa last 2.1 P.A. Now (θ) 211.7°
Sep first 0.3 Sep last 0.179 Sep. Now (ρ) 0.214"
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 Gaia DR2 1682085256709072256 HD 104288 GC 16418
ADS 8387 BD BD+69 636 Distance 206.19 Distance ly 672.59
 
 
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° Notesn ReferenceUSN2002
Equinox2000 Last observation1993 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 340.7 0.119
2001 344.2 0.121
2002 347.6 0.123
2003 350.9 0.125
2004 354.0 0.127
2005 357.1 0.129
2006 0.1 0.131
2007 3.0 0.132
2008 5.9 0.133
2009 8.7 0.134
2010 11.5 0.134
2011 14.3 0.132
2012 17.2 0.130
2013 20.3 0.124
2014 23.8 0.115
2015 28.1 0.101
2016 34.4 0.078
2017 49.1 0.043
2018 140.2 0.020
2019 191.0 0.056
2020 200.4 0.094
2021 204.6 0.126
2022 207.2 0.153
2023 209.1 0.176
2024 210.5 0.196
2025 211.7 0.214
2026 212.7 0.230
2027 213.6 0.244
2028 214.4 0.256
2029 215.2 0.268
2030 215.8 0.278
2031 216.5 0.287
2032 217.1 0.296
2033 217.6 0.304
2034 218.2 0.311
2035 218.7 0.317
2036 219.2 0.323
2037 219.6 0.328
2038 220.1 0.333
2039 220.5 0.337
2040 221.0 0.341
2041 221.4 0.345
2042 221.8 0.348
2043 222.2 0.351
2044 222.6 0.353
2045 223.0 0.356
2046 223.4 0.357
2047 223.8 0.359
2048 224.2 0.360
2049 224.6 0.361
2050 225.0 0.362


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds12006%2B6911a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic