Double Star Calculator - Orbit

Orbital Elements for HDO294
WDS: HDO294 WDS ID/Discoverer
P: 4484.500 Orbital period (years)
a: 4.916 Semi-major axis (arcseconds)
i: 40.86 Inclination (degrees)
Ω: 116.65 Longitude of ascending node (degrees)
T: 1922.730 Epoch of periastron passage (year)
e: 0.9474 Eccentricity
ω: 137.62 Longitude of periastron (degrees)
Start-Year: -217.25 Year
End-Year: 4267.25 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDO294
Position: 200112.74-383512.7 Epoch-2000 right ascension and declination
WDS-ID: 20012-3835 WDS designation
Discoverer Code: HDO294 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 189386 HD catalog number
Hipparcos number: 98556 Hipparcos catalog number
V1: 8.08 Magnitude of the primary
V2: 9.11 Magnitude of the secondary
Equinox: 1900 Equinox
Date: 1974 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: Dom1978 Reference

Double Star Orbit for HDO294



WDS 6th Orbit including measures of HDO294

-- 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 HDO294
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.455    37.97
--------------------------
-217.25    8.608    82.69
-207.25    8.609    82.75
-197.25    8.609    82.82
-187.25    8.609    82.88
-177.25    8.608    82.94
-167.25    8.608    83.01
-157.25    8.607    83.07
-147.25    8.606    83.13
-137.25    8.605    83.20
-127.25    8.604    83.26
-117.25    8.602    83.32
-107.25    8.600    83.39
-97.25    8.598    83.45
-87.25    8.596    83.51
-77.25    8.593    83.58
-67.25    8.590    83.64
-57.25    8.587    83.70
-47.25    8.584    83.77
-37.25    8.581    83.83
-27.25    8.577    83.90
-17.25    8.573    83.96
-7.25    8.569    84.02
2.75    8.565    84.09
12.75    8.560    84.15
22.75    8.556    84.22
32.75    8.551    84.28
42.75    8.545    84.34
52.75    8.540    84.41
62.75    8.534    84.47
72.75    8.528    84.54
82.75    8.522    84.60
92.75    8.516    84.67
102.75    8.509    84.73
112.75    8.502    84.80
122.75    8.495    84.86
132.75    8.488    84.93
142.75    8.480    84.99
152.75    8.473    85.06
162.75    8.465    85.12
172.75    8.456    85.19
182.75    8.448    85.25
192.75    8.439    85.32
202.75    8.430    85.39
212.75    8.421    85.45
222.75    8.412    85.52
232.75    8.402    85.58
242.75    8.392    85.65
252.75    8.382    85.72
262.75    8.372    85.78
272.75    8.361    85.85
282.75    8.350    85.92
292.75    8.339    85.99
302.75    8.328    86.05
312.75    8.316    86.12
322.75    8.304    86.19
332.75    8.292    86.26
342.75    8.280    86.33
352.75    8.267    86.39
362.75    8.254    86.46
372.75    8.241    86.53
382.75    8.228    86.60
392.75    8.214    86.67
402.75    8.200    86.74
412.75    8.186    86.81
422.75    8.172    86.88
432.75    8.157    86.95
442.75    8.142    87.02
452.75    8.127    87.09
462.75    8.112    87.16
472.75    8.096    87.24
482.75    8.080    87.31
492.75    8.064    87.38
502.75    8.047    87.45
512.75    8.031    87.53
522.75    8.014    87.60
532.75    7.996    87.67
542.75    7.979    87.74
552.75    7.961    87.82
562.75    7.943    87.89
572.75    7.924    87.97
582.75    7.906    88.04
592.75    7.887    88.12
602.75    7.867    88.19
612.75    7.848    88.27
622.75    7.828    88.35
632.75    7.808    88.42
642.75    7.788    88.50
652.75    7.767    88.58
662.75    7.746    88.66
672.75    7.725    88.73
682.75    7.703    88.81
692.75    7.681    88.89
702.75    7.659    88.97
712.75    7.637    89.05
722.75    7.614    89.13
732.75    7.591    89.21
742.75    7.567    89.30
752.75    7.544    89.38
762.75    7.520    89.46
772.75    7.495    89.54
782.75    7.471    89.63
792.75    7.446    89.71
802.75    7.421    89.80
812.75    7.395    89.88
822.75    7.369    89.97
832.75    7.343    90.06
842.75    7.316    90.14
852.75    7.289    90.23
862.75    7.262    90.32
872.75    7.234    90.41
882.75    7.206    90.50
892.75    7.178    90.59
902.75    7.149    90.68
912.75    7.120    90.78
922.75    7.091    90.87
932.75    7.061    90.96
942.75    7.031    91.06
952.75    7.001    91.15
962.75    6.970    91.25
972.75    6.938    91.35
982.75    6.907    91.44
992.75    6.875    91.54
1002.75    6.843    91.64
1012.75    6.810    91.74
1022.75    6.777    91.84
1032.75    6.743    91.95
1042.75    6.709    92.05
1052.75    6.675    92.16
1062.75    6.640    92.26
1072.75    6.605    92.37
1082.75    6.569    92.48
1092.75    6.533    92.59
1102.75    6.496    92.70
1112.75    6.460    92.81
1122.75    6.422    92.92
1132.75    6.384    93.04
1142.75    6.346    93.15
1152.75    6.307    93.27
1162.75    6.268    93.39
1172.75    6.228    93.51
1182.75    6.188    93.63
1192.75    6.148    93.75
1202.75    6.106    93.88
1212.75    6.065    94.01
1222.75    6.022    94.13
1232.75    5.980    94.27
1242.75    5.937    94.40
1252.75    5.893    94.53
1262.75    5.848    94.67
1272.75    5.804    94.81
1282.75    5.758    94.95
1292.75    5.712    95.09
1302.75    5.666    95.23
1312.75    5.618    95.38
1322.75    5.571    95.53
1332.75    5.522    95.69
1342.75    5.473    95.84
1352.75    5.424    96.00
1362.75    5.373    96.16
1372.75    5.322    96.32
1382.75    5.271    96.49
1392.75    5.218    96.66
1402.75    5.165    96.84
1412.75    5.111    97.01
1422.75    5.057    97.20
1432.75    5.002    97.38
1442.75    4.946    97.57
1452.75    4.889    97.77
1462.75    4.831    97.96
1472.75    4.773    98.17
1482.75    4.713    98.38
1492.75    4.653    98.59
1502.75    4.592    98.81
1512.75    4.530    99.04
1522.75    4.467    99.27
1532.75    4.403    99.51
1542.75    4.338    99.75
1552.75    4.272   100.01
1562.75    4.205   100.27
1572.75    4.136   100.54
1582.75    4.067   100.82
1592.75    3.996   101.11
1602.75    3.924   101.41
1612.75    3.851   101.72
1622.75    3.777   102.04
1632.75    3.701   102.38
1642.75    3.623   102.73
1652.75    3.544   103.09
1662.75    3.464   103.47
1672.75    3.382   103.87
1682.75    3.298   104.30
1692.75    3.212   104.74
1702.75    3.124   105.21
1712.75    3.034   105.70
1722.75    2.942   106.23
1732.75    2.848   106.79
1742.75    2.751   107.39
1752.75    2.652   108.03
1762.75    2.549   108.73
1772.75    2.444   109.48
1782.75    2.335   110.30
1792.75    2.222   111.21
1802.75    2.106   112.21
1812.75    1.985   113.33
1822.75    1.858   114.60
1832.75    1.727   116.07
1842.75    1.588   117.78
1852.75    1.442   119.83
1862.75    1.287   122.35
1872.75    1.121   125.60
1882.75    0.942   130.04
1892.75    0.746   136.70
1902.75    0.530   148.52
1912.75    0.303   177.96
1922.75    0.232   262.21
1932.75    0.363   318.47
1942.75    0.490   344.81
1952.75    0.615     0.37
1962.75    0.739    10.69
1972.75    0.860    18.07
1982.75    0.978    23.65
1992.75    1.092    28.04
2002.75    1.204    31.61
2012.75    1.312    34.59
2022.75    1.417    37.11
2032.75    1.519    39.29
2042.75    1.619    41.20
2052.75    1.716    42.89
2062.75    1.811    44.40
2072.75    1.904    45.77
2082.75    1.994    47.00
2092.75    2.083    48.13
2102.75    2.170    49.17
2112.75    2.256    50.13
2122.75    2.340    51.02
2132.75    2.422    51.85
2142.75    2.503    52.62
2152.75    2.582    53.35
2162.75    2.660    54.03
2172.75    2.737    54.68
2182.75    2.812    55.29
2192.75    2.887    55.87
2202.75    2.960    56.42
2212.75    3.032    56.94
2222.75    3.103    57.44
2232.75    3.173    57.92
2242.75    3.242    58.37
2252.75    3.310    58.81
2262.75    3.377    59.23
2272.75    3.443    59.63
2282.75    3.509    60.02
2292.75    3.573    60.40
2302.75    3.637    60.76
2312.75    3.699    61.11
2322.75    3.761    61.45
2332.75    3.823    61.77
2342.75    3.883    62.09
2352.75    3.943    62.40
2362.75    4.002    62.69
2372.75    4.060    62.98
2382.75    4.118    63.26
2392.75    4.175    63.54
2402.75    4.232    63.80
2412.75    4.287    64.06
2422.75    4.342    64.31
2432.75    4.397    64.56
2442.75    4.451    64.80
2452.75    4.504    65.03
2462.75    4.557    65.26
2472.75    4.609    65.49
2482.75    4.661    65.70
2492.75    4.712    65.92
2502.75    4.762    66.13
2512.75    4.812    66.33
2522.75    4.862    66.53
2532.75    4.911    66.73
2542.75    4.959    66.92
2552.75    5.007    67.11
2562.75    5.054    67.30
2572.75    5.101    67.48
2582.75    5.148    67.66
2592.75    5.194    67.83
2602.75    5.240    68.01
2612.75    5.285    68.18
2622.75    5.329    68.34
2632.75    5.374    68.51
2642.75    5.417    68.67
2652.75    5.461    68.83
2662.75    5.504    68.98
2672.75    5.546    69.14
2682.75    5.588    69.29
2692.75    5.630    69.44
2702.75    5.671    69.58
2712.75    5.712    69.73
2722.75    5.753    69.87
2732.75    5.793    70.01
2742.75    5.833    70.15
2752.75    5.872    70.29
2762.75    5.911    70.42
2772.75    5.949    70.56
2782.75    5.988    70.69
2792.75    6.026    70.82
2802.75    6.063    70.95
2812.75    6.100    71.08
2822.75    6.137    71.20
2832.75    6.173    71.33
2842.75    6.209    71.45
2852.75    6.245    71.57
2862.75    6.280    71.69
2872.75    6.316    71.81
2882.75    6.350    71.92
2892.75    6.385    72.04
2902.75    6.419    72.15
2912.75    6.452    72.27
2922.75    6.486    72.38
2932.75    6.519    72.49
2942.75    6.551    72.60
2952.75    6.584    72.71
2962.75    6.616    72.82
2972.75    6.648    72.92
2982.75    6.679    73.03
2992.75    6.710    73.14
3002.75    6.741    73.24
3012.75    6.772    73.34
3022.75    6.802    73.44
3032.75    6.832    73.54
3042.75    6.862    73.64
3052.75    6.891    73.74
3062.75    6.920    73.84
3072.75    6.949    73.94
3082.75    6.977    74.04
3092.75    7.006    74.13
3102.75    7.034    74.23
3112.75    7.061    74.32
3122.75    7.088    74.42
3132.75    7.116    74.51
3142.75    7.142    74.60
3152.75    7.169    74.69
3162.75    7.195    74.79
3172.75    7.221    74.88
3182.75    7.247    74.97
3192.75    7.272    75.05
3202.75    7.297    75.14
3212.75    7.322    75.23
3222.75    7.347    75.32
3232.75    7.371    75.40
3242.75    7.395    75.49
3252.75    7.419    75.58
3262.75    7.443    75.66
3272.75    7.466    75.75
3282.75    7.489    75.83
3292.75    7.512    75.91
3302.75    7.534    76.00
3312.75    7.556    76.08
3322.75    7.578    76.16
3332.75    7.600    76.24
3342.75    7.622    76.32
3352.75    7.643    76.40
3362.75    7.664    76.48
3372.75    7.685    76.56
3382.75    7.705    76.64
3392.75    7.725    76.72
3402.75    7.745    76.80
3412.75    7.765    76.88
3422.75    7.785    76.96
3432.75    7.804    77.03
3442.75    7.823    77.11
3452.75    7.842    77.19
3462.75    7.860    77.26
3472.75    7.879    77.34
3482.75    7.897    77.41
3492.75    7.914    77.49
3502.75    7.932    77.56
3512.75    7.949    77.64
3522.75    7.966    77.71
3532.75    7.983    77.79
3542.75    8.000    77.86
3552.75    8.016    77.93
3562.75    8.033    78.01
3572.75    8.049    78.08
3582.75    8.064    78.15
3592.75    8.080    78.22
3602.75    8.095    78.30
3612.75    8.110    78.37
3622.75    8.125    78.44
3632.75    8.139    78.51
3642.75    8.154    78.58
3652.75    8.168    78.65
3662.75    8.182    78.72
3672.75    8.195    78.79
3682.75    8.209    78.86
3692.75    8.222    78.93
3702.75    8.235    79.00
3712.75    8.247    79.07
3722.75    8.260    79.14
3732.75    8.272    79.21
3742.75    8.284    79.28
3752.75    8.296    79.34
3762.75    8.308    79.41
3772.75    8.319    79.48
3782.75    8.330    79.55
3792.75    8.341    79.62
3802.75    8.352    79.68
3812.75    8.362    79.75
3822.75    8.373    79.82
3832.75    8.383    79.88
3842.75    8.393    79.95
3852.75    8.402    80.02
3862.75    8.412    80.08
3872.75    8.421    80.15
3882.75    8.430    80.22
3892.75    8.439    80.28
3902.75    8.447    80.35
3912.75    8.455    80.41
3922.75    8.463    80.48
3932.75    8.471    80.54
3942.75    8.479    80.61
3952.75    8.486    80.68
3962.75    8.494    80.74
3972.75    8.500    80.81
3982.75    8.507    80.87
3992.75    8.514    80.94
4002.75    8.520    81.00
4012.75    8.526    81.06
4022.75    8.532    81.13
4032.75    8.538    81.19
4042.75    8.543    81.26
4052.75    8.548    81.32
4062.75    8.554    81.39
4072.75    8.558    81.45
4082.75    8.563    81.51
4092.75    8.567    81.58
4102.75    8.571    81.64
4112.75    8.575    81.71
4122.75    8.579    81.77
4132.75    8.583    81.83
4142.75    8.586    81.90
4152.75    8.589    81.96
4162.75    8.592    82.03
4172.75    8.594    82.09
4182.75    8.597    82.15
4192.75    8.599    82.22
4202.75    8.601    82.28
4212.75    8.603    82.34
4222.75    8.604    82.41
4232.75    8.606    82.47
4242.75    8.607    82.53
4252.75    8.608    82.60
4262.75    8.608    82.66






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 18:11:15



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