Double Star Calculator - Orbit

Orbital Elements for D5AB
WDS: D5AB WDS ID/Discoverer
P: 2733.000 Orbital period (years)
a: 2.82 Semi-major axis (arcseconds)
i: 106.5 Inclination (degrees)
Ω: 150.2 Longitude of ascending node (degrees)
T: 2058.000 Epoch of periastron passage (year)
e: 0.436 Eccentricity
ω: 299.6 Longitude of periastron (degrees)
Start-Year: 658.5 Year
End-Year: 3391.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for D5AB
Position: 045717.22+534507.5 Epoch-2000 right ascension and declination
WDS-ID: 04573+5345 WDS designation
Discoverer Code: D5AB Discover designation and components
ADS number: 3536 Aitken Double Star catalog
HD number: 31278 HD catalog number
Hipparcos number: 23040 Hipparcos catalog number
V1: 4.49 Magnitude of the primary
V2: 7.90 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 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: FMR2013a Reference

Double Star Orbit for D5AB



WDS 6th Orbit including measures of D5AB

-- 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 D5AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.655   191.51
--------------------------
658.50    2.139   358.61
668.50    2.169   358.03
678.50    2.198   357.47
688.50    2.228   356.92
698.50    2.257   356.39
708.50    2.285   355.87
718.50    2.314   355.37
728.50    2.342   354.87
738.50    2.370   354.39
748.50    2.398   353.92
758.50    2.426   353.46
768.50    2.453   353.01
778.50    2.480   352.57
788.50    2.507   352.14
798.50    2.533   351.72
808.50    2.559   351.30
818.50    2.585   350.90
828.50    2.610   350.50
838.50    2.635   350.11
848.50    2.660   349.73
858.50    2.684   349.36
868.50    2.708   348.99
878.50    2.731   348.62
888.50    2.755   348.27
898.50    2.777   347.92
908.50    2.799   347.57
918.50    2.821   347.24
928.50    2.843   346.90
938.50    2.864   346.57
948.50    2.884   346.25
958.50    2.904   345.93
968.50    2.924   345.61
978.50    2.943   345.30
988.50    2.961   345.00
998.50    2.979   344.69
1008.50    2.997   344.39
1018.50    3.014   344.10
1028.50    3.031   343.80
1038.50    3.047   343.51
1048.50    3.062   343.23
1058.50    3.077   342.94
1068.50    3.091   342.66
1078.50    3.105   342.38
1088.50    3.118   342.10
1098.50    3.130   341.83
1108.50    3.142   341.56
1118.50    3.154   341.29
1128.50    3.164   341.02
1138.50    3.174   340.75
1148.50    3.184   340.49
1158.50    3.192   340.22
1168.50    3.200   339.96
1178.50    3.208   339.70
1188.50    3.214   339.44
1198.50    3.220   339.18
1208.50    3.225   338.93
1218.50    3.230   338.67
1228.50    3.233   338.41
1238.50    3.236   338.16
1248.50    3.238   337.90
1258.50    3.240   337.65
1268.50    3.240   337.39
1278.50    3.240   337.14
1288.50    3.239   336.88
1298.50    3.237   336.62
1308.50    3.234   336.37
1318.50    3.230   336.11
1328.50    3.226   335.86
1338.50    3.220   335.60
1348.50    3.214   335.34
1358.50    3.206   335.08
1368.50    3.198   334.82
1378.50    3.189   334.56
1388.50    3.179   334.29
1398.50    3.167   334.03
1408.50    3.155   333.76
1418.50    3.142   333.49
1428.50    3.127   333.22
1438.50    3.112   332.94
1448.50    3.095   332.66
1458.50    3.077   332.38
1468.50    3.058   332.10
1478.50    3.038   331.81
1488.50    3.017   331.52
1498.50    2.994   331.22
1508.50    2.971   330.92
1518.50    2.946   330.61
1528.50    2.920   330.30
1538.50    2.892   329.98
1548.50    2.863   329.66
1558.50    2.833   329.33
1568.50    2.801   328.99
1578.50    2.768   328.65
1588.50    2.734   328.29
1598.50    2.698   327.93
1608.50    2.661   327.56
1618.50    2.622   327.18
1628.50    2.581   326.78
1638.50    2.540   326.37
1648.50    2.496   325.95
1658.50    2.451   325.51
1668.50    2.404   325.06
1678.50    2.356   324.58
1688.50    2.306   324.09
1698.50    2.254   323.58
1708.50    2.201   323.04
1718.50    2.146   322.47
1728.50    2.089   321.87
1738.50    2.030   321.24
1748.50    1.970   320.57
1758.50    1.908   319.86
1768.50    1.844   319.10
1778.50    1.779   318.28
1788.50    1.712   317.40
1798.50    1.643   316.45
1808.50    1.573   315.42
1818.50    1.501   314.28
1828.50    1.428   313.03
1838.50    1.353   311.65
1848.50    1.277   310.10
1858.50    1.200   308.35
1868.50    1.123   306.37
1878.50    1.045   304.08
1888.50    0.967   301.44
1898.50    0.890   298.33
1908.50    0.814   294.63
1918.50    0.741   290.19
1928.50    0.671   284.80
1938.50    0.607   278.22
1948.50    0.552   270.21
1958.50    0.508   260.62
1968.50    0.480   249.58
1978.50    0.470   237.63
1988.50    0.479   225.66
1998.50    0.507   214.59
2008.50    0.551   204.97
2018.50    0.605   196.91
2028.50    0.668   190.29
2038.50    0.737   184.84
2048.50    0.808   180.35
2058.50    0.882   176.59
2068.50    0.956   173.42
2078.50    1.030   170.70
2088.50    1.103   168.34
2098.50    1.174   166.27
2108.50    1.243   164.44
2118.50    1.310   162.80
2128.50    1.375   161.31
2138.50    1.436   159.95
2148.50    1.494   158.71
2158.50    1.550   157.55
2168.50    1.602   156.47
2178.50    1.651   155.46
2188.50    1.696   154.51
2198.50    1.738   153.60
2208.50    1.777   152.73
2218.50    1.813   151.90
2228.50    1.845   151.10
2238.50    1.875   150.33
2248.50    1.901   149.58
2258.50    1.924   148.84
2268.50    1.945   148.13
2278.50    1.963   147.43
2288.50    1.978   146.74
2298.50    1.990   146.06
2308.50    2.000   145.38
2318.50    2.008   144.72
2328.50    2.013   144.06
2338.50    2.016   143.40
2348.50    2.017   142.74
2358.50    2.017   142.08
2368.50    2.014   141.42
2378.50    2.009   140.76
2388.50    2.003   140.09
2398.50    1.996   139.42
2408.50    1.986   138.75
2418.50    1.975   138.07
2428.50    1.963   137.38
2438.50    1.950   136.68
2448.50    1.935   135.97
2458.50    1.920   135.25
2468.50    1.903   134.51
2478.50    1.885   133.77
2488.50    1.866   133.01
2498.50    1.846   132.23
2508.50    1.826   131.44
2518.50    1.805   130.62
2528.50    1.783   129.79
2538.50    1.760   128.94
2548.50    1.737   128.06
2558.50    1.714   127.16
2568.50    1.690   126.24
2578.50    1.665   125.29
2588.50    1.640   124.31
2598.50    1.615   123.30
2608.50    1.590   122.25
2618.50    1.565   121.18
2628.50    1.539   120.07
2638.50    1.513   118.92
2648.50    1.488   117.73
2658.50    1.462   116.50
2668.50    1.437   115.22
2678.50    1.411   113.90
2688.50    1.386   112.53
2698.50    1.362   111.12
2708.50    1.337   109.65
2718.50    1.313   108.12
2728.50    1.290   106.54
2738.50    1.267   104.90
2748.50    1.245   103.21
2758.50    1.224   101.45
2768.50    1.203    99.63
2778.50    1.183    97.75
2788.50    1.164    95.80
2798.50    1.147    93.80
2808.50    1.130    91.73
2818.50    1.114    89.60
2828.50    1.100    87.42
2838.50    1.087    85.18
2848.50    1.076    82.89
2858.50    1.066    80.56
2868.50    1.057    78.18
2878.50    1.050    75.77
2888.50    1.045    73.33
2898.50    1.041    70.87
2908.50    1.039    68.40
2918.50    1.039    65.92
2928.50    1.040    63.44
2938.50    1.043    60.97
2948.50    1.048    58.52
2958.50    1.055    56.10
2968.50    1.062    53.71
2978.50    1.072    51.36
2988.50    1.083    49.05
2998.50    1.096    46.79
3008.50    1.110    44.59
3018.50    1.125    42.45
3028.50    1.142    40.36
3038.50    1.159    38.34
3048.50    1.178    36.38
3058.50    1.198    34.48
3068.50    1.220    32.65
3078.50    1.242    30.88
3088.50    1.265    29.18
3098.50    1.288    27.53
3108.50    1.313    25.95
3118.50    1.338    24.42
3128.50    1.364    22.96
3138.50    1.390    21.55
3148.50    1.417    20.19
3158.50    1.445    18.88
3168.50    1.473    17.62
3178.50    1.501    16.41
3188.50    1.530    15.24
3198.50    1.559    14.12
3208.50    1.588    13.04
3218.50    1.617    12.00
3228.50    1.647    10.99
3238.50    1.677    10.02
3248.50    1.707     9.09
3258.50    1.737     8.18
3268.50    1.768     7.31
3278.50    1.798     6.47
3288.50    1.828     5.65
3298.50    1.859     4.87
3308.50    1.889     4.10
3318.50    1.920     3.37
3328.50    1.950     2.65
3338.50    1.980     1.96
3348.50    2.011     1.29
3358.50    2.041     0.63
3368.50    2.071   360.00
3378.50    2.101   359.38
3388.50    2.130   358.79






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 15:32:12



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