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Doubles in session


Current system
17075+3810
COU 1291
HD 155039


Nearby doubles
14' : 17076+3823
KPP1915

21' : 17092+3811
DAM 908

26' : 17096+3818
DAM 920AB

31' : 17067+3839
PTT 16

40' : 17104+3752
DAM 943

46' : 17106+3742
DAM 946AB

48' : 17098+3849
HU 1177AB

51' : 17086+3721
DAM 893

54' : 17117+3750
TDT 260

60' : 17100+3902
TDT 241

61' : 17046+3900
HJ 2804AB

62' : 17106+3721
DAM 947

62' : 17022+3807
ALI 865

64' : 17124+3746
DAM 986

69' : 17017+3807
FMR 130

73' : 17080+3658
DAM 883

75' : 17014+3754
HJ 263

79' : 17010+3755
HJ 262

81' : 17116+3916
HU 1178AB

85' : 17145+3833
MLB 850

85' : 17092+3648
DAM 909

86' : 17089+3647
DAM 899

86' : 17055+3648
OSW 41

88' : 17093+3645
DAM 911

89' : 17112+3653
DAM 963AB

90' : 17006+3733
SKF2544



Selections
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Binary Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

17075+3810 COU 1291 (HD 155039)

 
 
17h 07m 30.00s +38° 10' 20.6" P.A. 130.00 sep 0.3 mag 9.30,9.62 Sp G5 dist. 114.16 pc (372.39 l.y.)
 
 
Coord 2000 17075+3810 Discov num COU1291 Comp Coord arcsec 2000 17 07 30.00 +38 10 20.6
Date first 1975 Date last 2014 Obs 69
Pa first 149 Pa last 129.9 P.A. Now (θ) 319.1°
Sep first 0.1 Sep last 0.279 Sep. Now (ρ) 0.287"
Mag pri 9.30 Mag sec 9.62 delta mag (ΔM) 0.32 Spectral class G5 (yellow)
Pri motion ra -015 Sec motion ra
Pri motion dec +004 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 155039 Constellation Hercules SAO 65803 HIP 83791
Tycho2 3072-00451-1 Gaia DR2 1341049975639482112 HD 155039 BD BD+38 2885
Distance 114.16 Distance ly 372.39
 
 
ORBITAL ELEMENTS
 
 
Period (P)82y Periastron (T)1969.44y Semi-major axis (a)0.221a
Eccentricity (e)0.434 Inclination (i)61.3° Longitude of periastron (ω)326.7°
Node (Ω)140.7° Notesn ReferenceDoc2011a
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 287.2 0.213
2001 289.2 0.220
2002 291.0 0.228
2003 292.8 0.235
2004 294.4 0.242
2005 295.9 0.248
2006 297.4 0.255
2007 298.8 0.261
2008 300.1 0.266
2009 301.4 0.271
2010 302.7 0.276
2011 303.9 0.280
2012 305.0 0.284
2013 306.2 0.287
2014 307.3 0.290
2015 308.4 0.293
2016 309.4 0.295
2017 310.5 0.296
2018 311.6 0.297
2019 312.6 0.297
2020 313.7 0.297
2021 314.7 0.296
2022 315.8 0.295
2023 316.9 0.293
2024 317.9 0.290
2025 319.1 0.287
2026 320.2 0.283
2027 321.4 0.279
2028 322.6 0.274
2029 323.9 0.268
2030 325.2 0.261
2031 326.6 0.254
2032 328.1 0.245
2033 329.7 0.236
2034 331.4 0.227
2035 333.3 0.216
2036 335.4 0.205
2037 337.8 0.192
2038 340.4 0.179
2039 343.6 0.165
2040 347.3 0.151
2041 351.8 0.136
2042 357.5 0.120
2043 4.8 0.105
2044 14.5 0.091
2045 27.4 0.079
2046 44.1 0.071
2047 63.3 0.069
2048 82.1 0.073
2049 97.8 0.082
2050 110.1 0.093


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds17075%2B3810c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic