Double Star Calculator - Orbit

Orbital Elements for DUN38AB
WDS: DUN38AB WDS ID/Discoverer
P: 55000.000 Orbital period (years)
a: 110.0 Semi-major axis (arcseconds)
i: 81.0 Inclination (degrees)
Ω: 170.0 Longitude of ascending node (degrees)
T: -3500.000 Epoch of periastron passage (year)
e: 0.87 Eccentricity
ω: 130.0 Longitude of periastron (degrees)
Start-Year: -25475.0 Year
End-Year: 29525.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for DUN38AB
Position: 070357.32-433628.9 Epoch-2000 right ascension and declination
WDS-ID: 07040-4337 WDS designation
Discoverer Code: DUN38AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 53705 HD catalog number
Hipparcos number: 34065 Hipparcos catalog number
V1: 5.61 Magnitude of the primary
V2: 6.68 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2016 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: LRR2021 Reference

Double Star Orbit for DUN38AB



WDS 6th Orbit including measures of DUN38AB

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of DUN38AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   21.912   123.24
--------------------------
-25475.00   143.743   161.17
-25375.00   143.828   161.20
-25275.00   143.911   161.23
-25175.00   143.990   161.26
-25075.00   144.067   161.29
-24975.00   144.140   161.31
-24875.00   144.210   161.34
-24775.00   144.277   161.37
-24675.00   144.341   161.40
-24575.00   144.402   161.43
-24475.00   144.459   161.46
-24375.00   144.513   161.49
-24275.00   144.564   161.52
-24175.00   144.612   161.55
-24075.00   144.657   161.58
-23975.00   144.698   161.61
-23875.00   144.736   161.64
-23775.00   144.771   161.67
-23675.00   144.803   161.70
-23575.00   144.831   161.72
-23475.00   144.856   161.75
-23375.00   144.878   161.78
-23275.00   144.896   161.81
-23175.00   144.911   161.84
-23075.00   144.922   161.87
-22975.00   144.930   161.90
-22875.00   144.935   161.93
-22775.00   144.936   161.96
-22675.00   144.934   161.99
-22575.00   144.928   162.02
-22475.00   144.919   162.04
-22375.00   144.907   162.07
-22275.00   144.890   162.10
-22175.00   144.871   162.13
-22075.00   144.848   162.16
-21975.00   144.821   162.19
-21875.00   144.790   162.22
-21775.00   144.757   162.25
-21675.00   144.719   162.28
-21575.00   144.678   162.31
-21475.00   144.633   162.34
-21375.00   144.584   162.36
-21275.00   144.532   162.39
-21175.00   144.476   162.42
-21075.00   144.416   162.45
-20975.00   144.353   162.48
-20875.00   144.286   162.51
-20775.00   144.215   162.54
-20675.00   144.140   162.57
-20575.00   144.061   162.60
-20475.00   143.978   162.63
-20375.00   143.892   162.66
-20275.00   143.801   162.69
-20175.00   143.707   162.72
-20075.00   143.609   162.75
-19975.00   143.507   162.78
-19875.00   143.400   162.81
-19775.00   143.290   162.84
-19675.00   143.175   162.87
-19575.00   143.057   162.90
-19475.00   142.934   162.93
-19375.00   142.807   162.96
-19275.00   142.677   162.99
-19175.00   142.541   163.02
-19075.00   142.402   163.05
-18975.00   142.258   163.08
-18875.00   142.111   163.11
-18775.00   141.958   163.14
-18675.00   141.802   163.17
-18575.00   141.641   163.20
-18475.00   141.475   163.23
-18375.00   141.306   163.26
-18275.00   141.131   163.29
-18175.00   140.953   163.32
-18075.00   140.769   163.35
-17975.00   140.581   163.38
-17875.00   140.389   163.41
-17775.00   140.192   163.44
-17675.00   139.990   163.47
-17575.00   139.784   163.51
-17475.00   139.572   163.54
-17375.00   139.356   163.57
-17275.00   139.135   163.60
-17175.00   138.910   163.63
-17075.00   138.679   163.66
-16975.00   138.443   163.69
-16875.00   138.203   163.73
-16775.00   137.957   163.76
-16675.00   137.707   163.79
-16575.00   137.451   163.82
-16475.00   137.190   163.86
-16375.00   136.924   163.89
-16275.00   136.652   163.92
-16175.00   136.376   163.95
-16075.00   136.094   163.99
-15975.00   135.806   164.02
-15875.00   135.513   164.05
-15775.00   135.215   164.09
-15675.00   134.911   164.12
-15575.00   134.601   164.15
-15475.00   134.286   164.19
-15375.00   133.965   164.22
-15275.00   133.639   164.25
-15175.00   133.306   164.29
-15075.00   132.968   164.32
-14975.00   132.623   164.36
-14875.00   132.273   164.39
-14775.00   131.917   164.43
-14675.00   131.554   164.46
-14575.00   131.185   164.50
-14475.00   130.810   164.53
-14375.00   130.429   164.57
-14275.00   130.041   164.61
-14175.00   129.647   164.64
-14075.00   129.246   164.68
-13975.00   128.839   164.72
-13875.00   128.425   164.75
-13775.00   128.004   164.79
-13675.00   127.576   164.83
-13575.00   127.141   164.86
-13475.00   126.699   164.90
-13375.00   126.250   164.94
-13275.00   125.794   164.98
-13175.00   125.331   165.02
-13075.00   124.860   165.06
-12975.00   124.382   165.10
-12875.00   123.896   165.14
-12775.00   123.402   165.18
-12675.00   122.901   165.22
-12575.00   122.391   165.26
-12475.00   121.874   165.30
-12375.00   121.349   165.34
-12275.00   120.815   165.38
-12175.00   120.273   165.42
-12075.00   119.722   165.47
-11975.00   119.163   165.51
-11875.00   118.595   165.55
-11775.00   118.019   165.59
-11675.00   117.433   165.64
-11575.00   116.838   165.68
-11475.00   116.234   165.73
-11375.00   115.620   165.77
-11275.00   114.996   165.82
-11175.00   114.363   165.87
-11075.00   113.720   165.91
-10975.00   113.067   165.96
-10875.00   112.404   166.01
-10775.00   111.730   166.06
-10675.00   111.045   166.11
-10575.00   110.350   166.16
-10475.00   109.643   166.21
-10375.00   108.926   166.26
-10275.00   108.196   166.31
-10175.00   107.455   166.36
-10075.00   106.703   166.42
-9975.00   105.938   166.47
-9875.00   105.160   166.52
-9775.00   104.370   166.58
-9675.00   103.567   166.64
-9575.00   102.750   166.69
-9475.00   101.920   166.75
-9375.00   101.076   166.81
-9275.00   100.218   166.87
-9175.00   99.346   166.93
-9075.00   98.459   167.00
-8975.00   97.556   167.06
-8875.00   96.638   167.12
-8775.00   95.704   167.19
-8675.00   94.753   167.26
-8575.00   93.786   167.33
-8475.00   92.801   167.40
-8375.00   91.799   167.47
-8275.00   90.778   167.54
-8175.00   89.738   167.62
-8075.00   88.679   167.69
-7975.00   87.600   167.77
-7875.00   86.501   167.85
-7775.00   85.380   167.94
-7675.00   84.238   168.02
-7575.00   83.072   168.11
-7475.00   81.884   168.20
-7375.00   80.671   168.29
-7275.00   79.433   168.39
-7175.00   78.169   168.48
-7075.00   76.878   168.59
-6975.00   75.559   168.69
-6875.00   74.210   168.80
-6775.00   72.831   168.91
-6675.00   71.421   169.03
-6575.00   69.977   169.15
-6475.00   68.498   169.28
-6375.00   66.983   169.41
-6275.00   65.430   169.55
-6175.00   63.837   169.70
-6075.00   62.202   169.85
-5975.00   60.523   170.01
-5875.00   58.796   170.19
-5775.00   57.020   170.37
-5675.00   55.191   170.56
-5575.00   53.306   170.77
-5475.00   51.361   170.99
-5375.00   49.353   171.23
-5275.00   47.276   171.50
-5175.00   45.125   171.78
-5075.00   42.895   172.10
-4975.00   40.579   172.45
-4875.00   38.169   172.84
-4775.00   35.658   173.29
-4675.00   33.036   173.81
-4575.00   30.292   174.42
-4475.00   27.414   175.15
-4375.00   24.390   176.07
-4275.00   21.206   177.25
-4175.00   17.849   178.86
-4075.00   14.312   181.25
-3975.00   10.605   185.26
-3875.00    6.798   193.73
-3775.00    3.317   221.79
-3675.00    3.233   302.59
-3575.00    6.639   332.08
-3475.00   10.212   341.04
-3375.00   13.314   345.49
-3275.00   15.774   348.38
-3175.00   17.605   350.57
-3075.00   18.899   352.40
-2975.00   19.770   354.02
-2875.00   20.314   355.54
-2775.00   20.608   357.00
-2675.00   20.710   358.43
-2575.00   20.663   359.85
-2475.00   20.502     1.30
-2375.00   20.250     2.77
-2275.00   19.929     4.28
-2175.00   19.552     5.85
-2075.00   19.133     7.48
-1975.00   18.681     9.19
-1875.00   18.207    10.98
-1775.00   17.716    12.88
-1675.00   17.216    14.88
-1575.00   16.713    17.00
-1475.00   16.212    19.26
-1375.00   15.718    21.65
-1275.00   15.237    24.21
-1175.00   14.772    26.92
-1075.00   14.330    29.81
-975.00   13.915    32.87
-875.00   13.531    36.12
-775.00   13.184    39.54
-675.00   12.878    43.14
-575.00   12.618    46.90
-475.00   12.407    50.81
-375.00   12.249    54.83
-275.00   12.147    58.94
-175.00   12.103    63.10
-75.00   12.117    67.27
25.00   12.191    71.41
125.00   12.322    75.48
225.00   12.510    79.44
325.00   12.752    83.27
425.00   13.045    86.95
525.00   13.384    90.45
625.00   13.767    93.77
725.00   14.190    96.90
825.00   14.649    99.84
925.00   15.140   102.59
1025.00   15.661   105.17
1125.00   16.207   107.57
1225.00   16.777   109.82
1325.00   17.367   111.92
1425.00   17.975   113.88
1525.00   18.599   115.70
1625.00   19.238   117.41
1725.00   19.889   119.01
1825.00   20.551   120.50
1925.00   21.222   121.90
2025.00   21.902   123.22
2125.00   22.589   124.45
2225.00   23.283   125.61
2325.00   23.982   126.71
2425.00   24.686   127.74
2525.00   25.395   128.71
2625.00   26.106   129.64
2725.00   26.821   130.51
2825.00   27.538   131.34
2925.00   28.258   132.12
3025.00   28.978   132.87
3125.00   29.701   133.58
3225.00   30.424   134.25
3325.00   31.148   134.90
3425.00   31.872   135.51
3525.00   32.596   136.10
3625.00   33.321   136.66
3725.00   34.045   137.20
3825.00   34.769   137.72
3925.00   35.492   138.21
4025.00   36.214   138.69
4125.00   36.935   139.14
4225.00   37.656   139.58
4325.00   38.375   140.01
4425.00   39.093   140.41
4525.00   39.810   140.81
4625.00   40.525   141.18
4725.00   41.239   141.55
4825.00   41.951   141.90
4925.00   42.662   142.24
5025.00   43.371   142.57
5125.00   44.078   142.89
5225.00   44.783   143.20
5325.00   45.486   143.50
5425.00   46.188   143.79
5525.00   46.887   144.08
5625.00   47.585   144.35
5725.00   48.280   144.62
5825.00   48.973   144.87
5925.00   49.664   145.13
6025.00   50.353   145.37
6125.00   51.040   145.61
6225.00   51.725   145.84
6325.00   52.407   146.06
6425.00   53.087   146.28
6525.00   53.765   146.50
6625.00   54.441   146.71
6725.00   55.114   146.91
6825.00   55.785   147.11
6925.00   56.453   147.30
7025.00   57.120   147.49
7125.00   57.783   147.68
7225.00   58.445   147.86
7325.00   59.104   148.03
7425.00   59.761   148.21
7525.00   60.415   148.38
7625.00   61.067   148.54
7725.00   61.716   148.70
7825.00   62.363   148.86
7925.00   63.008   149.02
8025.00   63.650   149.17
8125.00   64.290   149.32
8225.00   64.927   149.47
8325.00   65.562   149.61
8425.00   66.194   149.75
8525.00   66.824   149.89
8625.00   67.451   150.02
8725.00   68.076   150.16
8825.00   68.699   150.29
8925.00   69.319   150.42
9025.00   69.936   150.54
9125.00   70.551   150.67
9225.00   71.164   150.79
9325.00   71.774   150.91
9425.00   72.381   151.03
9525.00   72.986   151.14
9625.00   73.589   151.25
9725.00   74.189   151.37
9825.00   74.787   151.48
9925.00   75.382   151.58
10025.00   75.975   151.69
10125.00   76.565   151.80
10225.00   77.152   151.90
10325.00   77.738   152.00
10425.00   78.320   152.10
10525.00   78.901   152.20
10625.00   79.478   152.30
10725.00   80.054   152.39
10825.00   80.626   152.49
10925.00   81.197   152.58
11025.00   81.764   152.67
11125.00   82.330   152.77
11225.00   82.893   152.85
11325.00   83.453   152.94
11425.00   84.011   153.03
11525.00   84.566   153.12
11625.00   85.119   153.20
11725.00   85.670   153.28
11825.00   86.217   153.37
11925.00   86.763   153.45
12025.00   87.306   153.53
12125.00   87.847   153.61
12225.00   88.385   153.69
12325.00   88.920   153.77
12425.00   89.453   153.84
12525.00   89.984   153.92
12625.00   90.512   153.99
12725.00   91.038   154.07
12825.00   91.561   154.14
12925.00   92.082   154.21
13025.00   92.600   154.29
13125.00   93.116   154.36
13225.00   93.630   154.43
13325.00   94.141   154.50
13425.00   94.649   154.56
13525.00   95.155   154.63
13625.00   95.659   154.70
13725.00   96.160   154.77
13825.00   96.658   154.83
13925.00   97.155   154.90
14025.00   97.648   154.96
14125.00   98.140   155.02
14225.00   98.629   155.09
14325.00   99.115   155.15
14425.00   99.599   155.21
14525.00   100.080   155.27
14625.00   100.559   155.33
14725.00   101.036   155.39
14825.00   101.510   155.45
14925.00   101.982   155.51
15025.00   102.451   155.57
15125.00   102.918   155.63
15225.00   103.382   155.69
15325.00   103.844   155.74
15425.00   104.304   155.80
15525.00   104.760   155.86
15625.00   105.215   155.91
15725.00   105.667   155.97
15825.00   106.117   156.02
15925.00   106.564   156.07
16025.00   107.009   156.13
16125.00   107.451   156.18
16225.00   107.891   156.23
16325.00   108.328   156.29
16425.00   108.763   156.34
16525.00   109.196   156.39
16625.00   109.626   156.44
16725.00   110.054   156.49
16825.00   110.479   156.54
16925.00   110.901   156.59
17025.00   111.322   156.64
17125.00   111.740   156.69
17225.00   112.155   156.74
17325.00   112.568   156.79
17425.00   112.978   156.83
17525.00   113.386   156.88
17625.00   113.792   156.93
17725.00   114.195   156.98
17825.00   114.596   157.02
17925.00   114.994   157.07
18025.00   115.390   157.12
18125.00   115.783   157.16
18225.00   116.174   157.21
18325.00   116.562   157.25
18425.00   116.948   157.30
18525.00   117.331   157.34
18625.00   117.712   157.39
18725.00   118.091   157.43
18825.00   118.467   157.47
18925.00   118.840   157.52
19025.00   119.211   157.56
19125.00   119.580   157.60
19225.00   119.946   157.65
19325.00   120.310   157.69
19425.00   120.671   157.73
19525.00   121.030   157.77
19625.00   121.386   157.81
19725.00   121.740   157.85
19825.00   122.091   157.90
19925.00   122.440   157.94
20025.00   122.786   157.98
20125.00   123.130   158.02
20225.00   123.471   158.06
20325.00   123.810   158.10
20425.00   124.146   158.14
20525.00   124.480   158.18
20625.00   124.811   158.22
20725.00   125.140   158.26
20825.00   125.466   158.29
20925.00   125.790   158.33
21025.00   126.111   158.37
21125.00   126.430   158.41
21225.00   126.746   158.45
21325.00   127.059   158.49
21425.00   127.370   158.52
21525.00   127.679   158.56
21625.00   127.985   158.60
21725.00   128.289   158.64
21825.00   128.590   158.67
21925.00   128.888   158.71
22025.00   129.184   158.75
22125.00   129.477   158.78
22225.00   129.768   158.82
22325.00   130.056   158.86
22425.00   130.342   158.89
22525.00   130.625   158.93
22625.00   130.905   158.96
22725.00   131.183   159.00
22825.00   131.459   159.03
22925.00   131.732   159.07
23025.00   132.002   159.10
23125.00   132.269   159.14
23225.00   132.534   159.17
23325.00   132.797   159.21
23425.00   133.057   159.24
23525.00   133.314   159.28
23625.00   133.568   159.31
23725.00   133.820   159.35
23825.00   134.070   159.38
23925.00   134.316   159.41
24025.00   134.560   159.45
24125.00   134.802   159.48
24225.00   135.041   159.52
24325.00   135.277   159.55
24425.00   135.510   159.58
24525.00   135.741   159.62
24625.00   135.969   159.65
24725.00   136.195   159.68
24825.00   136.417   159.71
24925.00   136.638   159.75
25025.00   136.855   159.78
25125.00   137.070   159.81
25225.00   137.282   159.84
25325.00   137.491   159.88
25425.00   137.698   159.91
25525.00   137.902   159.94
25625.00   138.103   159.97
25725.00   138.301   160.01
25825.00   138.497   160.04
25925.00   138.690   160.07
26025.00   138.880   160.10
26125.00   139.068   160.13
26225.00   139.252   160.16
26325.00   139.434   160.20
26425.00   139.613   160.23
26525.00   139.790   160.26
26625.00   139.963   160.29
26725.00   140.134   160.32
26825.00   140.302   160.35
26925.00   140.467   160.38
27025.00   140.629   160.41
27125.00   140.789   160.44
27225.00   140.945   160.48
27325.00   141.099   160.51
27425.00   141.250   160.54
27525.00   141.398   160.57
27625.00   141.543   160.60
27725.00   141.685   160.63
27825.00   141.825   160.66
27925.00   141.961   160.69
28025.00   142.095   160.72
28125.00   142.226   160.75
28225.00   142.353   160.78
28325.00   142.478   160.81
28425.00   142.600   160.84
28525.00   142.719   160.87
28625.00   142.835   160.90
28725.00   142.948   160.93
28825.00   143.058   160.96
28925.00   143.165   160.99
29025.00   143.268   161.02
29125.00   143.369   161.05
29225.00   143.467   161.08
29325.00   143.562   161.11
29425.00   143.654   161.14






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.


Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 15:54:19



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