Double Star Calculator - Orbit

Orbital Elements for A1993
WDS: A1993 WDS ID/Discoverer
P: 2137.000 Orbital period (years)
a: 2.046 Semi-major axis (arcseconds)
i: 52.6 Inclination (degrees)
Ω: 124.3 Longitude of ascending node (degrees)
T: 1991.000 Epoch of periastron passage (year)
e: 0.822 Eccentricity
ω: 29.1 Longitude of periastron (degrees)
Start-Year: 956.5 Year
End-Year: 3093.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A1993
Position: 102843.86+455751.1 Epoch-2000 right ascension and declination
WDS-ID: 10287+4558 WDS designation
Discoverer Code: A1993 Discover designation and components
ADS number: 7785 Aitken Double Star catalog
HD number: 90619 HD catalog number
Hipparcos number: 51301 Hipparcos catalog number
V1: 9.25 Magnitude of the primary
V2: 10.22 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Lin2022b Reference

Double Star Orbit for A1993



WDS 6th Orbit including measures of A1993

-- 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 A1993
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.368   240.94
--------------------------
956.50    3.417   323.68
966.50    3.410   323.89
976.50    3.402   324.10
986.50    3.394   324.31
996.50    3.386   324.53
1006.50    3.377   324.74
1016.50    3.367   324.95
1026.50    3.357   325.17
1036.50    3.347   325.39
1046.50    3.336   325.61
1056.50    3.325   325.83
1066.50    3.314   326.05
1076.50    3.302   326.27
1086.50    3.289   326.49
1096.50    3.276   326.72
1106.50    3.263   326.95
1116.50    3.249   327.18
1126.50    3.235   327.41
1136.50    3.220   327.65
1146.50    3.205   327.88
1156.50    3.189   328.12
1166.50    3.173   328.36
1176.50    3.157   328.61
1186.50    3.140   328.85
1196.50    3.122   329.10
1206.50    3.104   329.35
1216.50    3.086   329.61
1226.50    3.067   329.86
1236.50    3.048   330.13
1246.50    3.028   330.39
1256.50    3.008   330.66
1266.50    2.988   330.93
1276.50    2.966   331.20
1286.50    2.945   331.48
1296.50    2.923   331.77
1306.50    2.900   332.05
1316.50    2.877   332.35
1326.50    2.854   332.64
1336.50    2.830   332.95
1346.50    2.806   333.25
1356.50    2.781   333.57
1366.50    2.755   333.88
1376.50    2.730   334.21
1386.50    2.703   334.54
1396.50    2.676   334.88
1406.50    2.649   335.22
1416.50    2.621   335.57
1426.50    2.593   335.93
1436.50    2.564   336.30
1446.50    2.535   336.67
1456.50    2.505   337.06
1466.50    2.474   337.45
1476.50    2.443   337.85
1486.50    2.412   338.27
1496.50    2.380   338.69
1506.50    2.347   339.13
1516.50    2.314   339.58
1526.50    2.280   340.04
1536.50    2.246   340.52
1546.50    2.211   341.01
1556.50    2.176   341.51
1566.50    2.140   342.04
1576.50    2.103   342.58
1586.50    2.066   343.14
1596.50    2.028   343.72
1606.50    1.990   344.33
1616.50    1.951   344.96
1626.50    1.911   345.61
1636.50    1.871   346.29
1646.50    1.830   347.01
1656.50    1.789   347.75
1666.50    1.747   348.53
1676.50    1.704   349.35
1686.50    1.661   350.21
1696.50    1.616   351.12
1706.50    1.572   352.08
1716.50    1.527   353.10
1726.50    1.481   354.18
1736.50    1.434   355.33
1746.50    1.387   356.55
1756.50    1.339   357.87
1766.50    1.291   359.28
1776.50    1.242     0.80
1786.50    1.192     2.45
1796.50    1.142     4.24
1806.50    1.092     6.20
1816.50    1.041     8.34
1826.50    0.990    10.71
1836.50    0.939    13.34
1846.50    0.888    16.26
1856.50    0.837    19.55
1866.50    0.787    23.26
1876.50    0.737    27.46
1886.50    0.689    32.26
1896.50    0.644    37.77
1906.50    0.601    44.08
1916.50    0.561    51.32
1926.50    0.526    59.59
1936.50    0.497    68.94
1946.50    0.472    79.35
1956.50    0.452    90.79
1966.50    0.431   103.30
1976.50    0.403   117.26
1986.50    0.360   133.92
1996.50    0.306   156.06
2006.50    0.271   186.24
2016.50    0.294   217.97
2026.50    0.368   240.94
2036.50    0.464   255.31
2046.50    0.567   264.60
2056.50    0.669   271.02
2066.50    0.769   275.76
2076.50    0.865   279.42
2086.50    0.958   282.36
2096.50    1.047   284.79
2106.50    1.132   286.85
2116.50    1.213   288.63
2126.50    1.292   290.18
2136.50    1.367   291.56
2146.50    1.440   292.80
2156.50    1.510   293.92
2166.50    1.578   294.95
2176.50    1.643   295.89
2186.50    1.706   296.76
2196.50    1.767   297.57
2206.50    1.826   298.32
2216.50    1.883   299.03
2226.50    1.938   299.70
2236.50    1.992   300.33
2246.50    2.044   300.93
2256.50    2.095   301.50
2266.50    2.144   302.04
2276.50    2.191   302.56
2286.50    2.237   303.06
2296.50    2.282   303.54
2306.50    2.326   304.00
2316.50    2.369   304.44
2326.50    2.410   304.87
2336.50    2.450   305.28
2346.50    2.489   305.68
2356.50    2.527   306.07
2366.50    2.564   306.45
2376.50    2.600   306.81
2386.50    2.634   307.17
2396.50    2.668   307.51
2406.50    2.701   307.85
2416.50    2.733   308.18
2426.50    2.765   308.51
2436.50    2.795   308.82
2446.50    2.824   309.13
2456.50    2.853   309.43
2466.50    2.881   309.73
2476.50    2.908   310.02
2486.50    2.934   310.31
2496.50    2.960   310.59
2506.50    2.984   310.86
2516.50    3.008   311.14
2526.50    3.032   311.40
2536.50    3.054   311.67
2546.50    3.076   311.93
2556.50    3.097   312.18
2566.50    3.118   312.43
2576.50    3.138   312.68
2586.50    3.157   312.93
2596.50    3.175   313.17
2606.50    3.193   313.41
2616.50    3.210   313.65
2626.50    3.227   313.89
2636.50    3.243   314.12
2646.50    3.259   314.35
2656.50    3.273   314.58
2666.50    3.288   314.81
2676.50    3.301   315.03
2686.50    3.314   315.25
2696.50    3.327   315.48
2706.50    3.339   315.70
2716.50    3.350   315.91
2726.50    3.361   316.13
2736.50    3.372   316.35
2746.50    3.381   316.56
2756.50    3.391   316.77
2766.50    3.400   316.98
2776.50    3.408   317.19
2786.50    3.415   317.40
2796.50    3.423   317.61
2806.50    3.429   317.82
2816.50    3.435   318.03
2826.50    3.441   318.23
2836.50    3.446   318.44
2846.50    3.451   318.64
2856.50    3.455   318.85
2866.50    3.459   319.05
2876.50    3.462   319.26
2886.50    3.465   319.46
2896.50    3.467   319.66
2906.50    3.469   319.87
2916.50    3.470   320.07
2926.50    3.471   320.27
2936.50    3.471   320.47
2946.50    3.471   320.68
2956.50    3.471   320.88
2966.50    3.470   321.08
2976.50    3.468   321.28
2986.50    3.466   321.49
2996.50    3.464   321.69
3006.50    3.461   321.89
3016.50    3.458   322.10
3026.50    3.454   322.30
3036.50    3.450   322.51
3046.50    3.445   322.71
3056.50    3.440   322.92
3066.50    3.434   323.12
3076.50    3.428   323.33
3086.50    3.422   323.54






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 16:28:18



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