Double Star Calculator - Orbit

Orbital Elements for STT539AC
WDS: STT539AC WDS ID/Discoverer
P: 2774.534 Orbital period (years)
a: 26.17204 Semi-major axis (arcseconds)
i: 78.216 Inclination (degrees)
Ω: 87.583 Longitude of ascending node (degrees)
T: 1664.936 Epoch of periastron passage (year)
e: 0.82467 Eccentricity
ω: 115.953 Longitude of periastron (degrees)
Start-Year: 637.7328 Year
End-Year: 3412.2672000000002 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT539AC
Position: 111511.91+732830.7 Epoch-2000 right ascension and declination
WDS-ID: 11152+7329 WDS designation
Discoverer Code: STT539AC Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 97584 HD catalog number
Hipparcos number: 54952 Hipparcos catalog number
V1: 7.77 Magnitude of the primary
V2: 11.34 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for STT539AC



WDS 6th Orbit including measures of STT539AC

-- 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 STT539AC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    6.384   329.31
--------------------------
637.73   26.710    70.82
647.73   26.783    70.97
657.73   26.853    71.11
667.73   26.921    71.25
677.73   26.987    71.39
687.73   27.050    71.53
697.73   27.110    71.67
707.73   27.168    71.81
717.73   27.223    71.95
727.73   27.275    72.09
737.73   27.324    72.23
747.73   27.371    72.36
757.73   27.415    72.50
767.73   27.457    72.64
777.73   27.495    72.77
787.73   27.530    72.91
797.73   27.563    73.04
807.73   27.592    73.18
817.73   27.618    73.31
827.73   27.642    73.45
837.73   27.662    73.58
847.73   27.679    73.72
857.73   27.692    73.85
867.73   27.703    73.98
877.73   27.710    74.12
887.73   27.714    74.25
897.73   27.714    74.39
907.73   27.710    74.52
917.73   27.703    74.65
927.73   27.693    74.79
937.73   27.679    74.92
947.73   27.660    75.05
957.73   27.638    75.19
967.73   27.613    75.32
977.73   27.583    75.46
987.73   27.549    75.59
997.73   27.511    75.73
1007.73   27.468    75.86
1017.73   27.422    76.00
1027.73   27.371    76.14
1037.73   27.315    76.27
1047.73   27.255    76.41
1057.73   27.190    76.55
1067.73   27.120    76.69
1077.73   27.046    76.83
1087.73   26.966    76.97
1097.73   26.881    77.11
1107.73   26.791    77.26
1117.73   26.695    77.40
1127.73   26.594    77.54
1137.73   26.487    77.69
1147.73   26.375    77.84
1157.73   26.256    77.98
1167.73   26.131    78.13
1177.73   26.000    78.29
1187.73   25.862    78.44
1197.73   25.718    78.59
1207.73   25.566    78.75
1217.73   25.408    78.91
1227.73   25.242    79.07
1237.73   25.068    79.23
1247.73   24.886    79.39
1257.73   24.697    79.56
1267.73   24.499    79.73
1277.73   24.292    79.90
1287.73   24.076    80.08
1297.73   23.851    80.26
1307.73   23.615    80.44
1317.73   23.370    80.63
1327.73   23.114    80.82
1337.73   22.847    81.01
1347.73   22.568    81.21
1357.73   22.277    81.41
1367.73   21.974    81.62
1377.73   21.657    81.84
1387.73   21.326    82.06
1397.73   20.980    82.29
1407.73   20.619    82.53
1417.73   20.241    82.77
1427.73   19.845    83.03
1437.73   19.431    83.29
1447.73   18.997    83.57
1457.73   18.542    83.86
1467.73   18.063    84.17
1477.73   17.561    84.49
1487.73   17.032    84.84
1497.73   16.474    85.20
1507.73   15.885    85.60
1517.73   15.261    86.02
1527.73   14.600    86.48
1537.73   13.898    86.99
1547.73   13.149    87.55
1557.73   12.348    88.18
1567.73   11.489    88.90
1577.73   10.563    89.75
1587.73    9.561    90.76
1597.73    8.473    92.03
1607.73    7.283    93.69
1617.73    5.980    96.04
1627.73    4.553    99.79
1637.73    3.012   107.25
1647.73    1.487   130.59
1657.73    1.194   215.33
1667.73    2.604   249.88
1677.73    4.045   259.53
1687.73    5.227   264.34
1697.73    6.134   267.52
1707.73    6.810   269.96
1717.73    7.309   272.02
1727.73    7.673   273.84
1737.73    7.935   275.53
1747.73    8.118   277.12
1757.73    8.240   278.65
1767.73    8.313   280.15
1777.73    8.348   281.63
1787.73    8.351   283.10
1797.73    8.330   284.57
1807.73    8.287   286.06
1817.73    8.228   287.56
1827.73    8.156   289.09
1837.73    8.073   290.65
1847.73    7.981   292.25
1857.73    7.882   293.88
1867.73    7.779   295.55
1877.73    7.672   297.27
1887.73    7.563   299.04
1897.73    7.454   300.86
1907.73    7.344   302.74
1917.73    7.237   304.67
1927.73    7.131   306.66
1937.73    7.029   308.71
1947.73    6.930   310.82
1957.73    6.837   312.98
1967.73    6.749   315.21
1977.73    6.668   317.49
1987.73    6.594   319.82
1997.73    6.527   322.21
2007.73    6.469   324.64
2017.73    6.419   327.12
2027.73    6.379   329.62
2037.73    6.348   332.16
2047.73    6.328   334.71
2057.73    6.317   337.28
2067.73    6.317   339.86
2077.73    6.327   342.43
2087.73    6.348   344.98
2097.73    6.379   347.52
2107.73    6.421   350.03
2117.73    6.473   352.50
2127.73    6.534   354.92
2137.73    6.606   357.30
2147.73    6.687   359.63
2157.73    6.776     1.89
2167.73    6.875     4.10
2177.73    6.981     6.24
2187.73    7.095     8.31
2197.73    7.217    10.32
2207.73    7.346    12.25
2217.73    7.481    14.12
2227.73    7.622    15.92
2237.73    7.769    17.66
2247.73    7.921    19.32
2257.73    8.078    20.93
2267.73    8.239    22.47
2277.73    8.405    23.95
2287.73    8.575    25.38
2297.73    8.748    26.75
2307.73    8.925    28.06
2317.73    9.105    29.33
2327.73    9.287    30.54
2337.73    9.472    31.71
2347.73    9.659    32.83
2357.73    9.848    33.91
2367.73   10.039    34.95
2377.73   10.232    35.95
2387.73   10.426    36.91
2397.73   10.622    37.84
2407.73   10.819    38.73
2417.73   11.017    39.59
2427.73   11.215    40.42
2437.73   11.415    41.22
2447.73   11.615    42.00
2457.73   11.816    42.75
2467.73   12.017    43.47
2477.73   12.219    44.17
2487.73   12.420    44.84
2497.73   12.622    45.50
2507.73   12.824    46.13
2517.73   13.026    46.75
2527.73   13.228    47.34
2537.73   13.430    47.92
2547.73   13.632    48.48
2557.73   13.833    49.03
2567.73   14.034    49.56
2577.73   14.235    50.07
2587.73   14.435    50.57
2597.73   14.635    51.06
2607.73   14.834    51.53
2617.73   15.033    51.99
2627.73   15.231    52.44
2637.73   15.428    52.87
2647.73   15.625    53.30
2657.73   15.821    53.72
2667.73   16.016    54.12
2677.73   16.210    54.52
2687.73   16.404    54.90
2697.73   16.596    55.28
2707.73   16.788    55.65
2717.73   16.979    56.01
2727.73   17.169    56.36
2737.73   17.358    56.70
2747.73   17.545    57.04
2757.73   17.732    57.37
2767.73   17.918    57.69
2777.73   18.103    58.01
2787.73   18.286    58.32
2797.73   18.469    58.63
2807.73   18.650    58.92
2817.73   18.830    59.22
2827.73   19.009    59.50
2837.73   19.186    59.78
2847.73   19.363    60.06
2857.73   19.538    60.33
2867.73   19.712    60.60
2877.73   19.884    60.86
2887.73   20.055    61.12
2897.73   20.225    61.37
2907.73   20.394    61.62
2917.73   20.561    61.86
2927.73   20.726    62.11
2937.73   20.891    62.34
2947.73   21.054    62.58
2957.73   21.215    62.81
2967.73   21.375    63.03
2977.73   21.533    63.25
2987.73   21.690    63.47
2997.73   21.846    63.69
3007.73   21.999    63.91
3017.73   22.152    64.12
3027.73   22.302    64.32
3037.73   22.452    64.53
3047.73   22.599    64.73
3057.73   22.745    64.93
3067.73   22.889    65.13
3077.73   23.032    65.32
3087.73   23.173    65.51
3097.73   23.312    65.70
3107.73   23.449    65.89
3117.73   23.585    66.08
3127.73   23.719    66.26
3137.73   23.851    66.44
3147.73   23.982    66.62
3157.73   24.110    66.80
3167.73   24.237    66.98
3177.73   24.362    67.15
3187.73   24.485    67.32
3197.73   24.606    67.49
3207.73   24.726    67.66
3217.73   24.843    67.83
3227.73   24.958    67.99
3237.73   25.072    68.16
3247.73   25.183    68.32
3257.73   25.292    68.48
3267.73   25.400    68.64
3277.73   25.505    68.80
3287.73   25.608    68.96
3297.73   25.710    69.11
3307.73   25.809    69.27
3317.73   25.905    69.42
3327.73   26.000    69.57
3337.73   26.093    69.73
3347.73   26.183    69.88
3357.73   26.271    70.02
3367.73   26.357    70.17
3377.73   26.440    70.32
3387.73   26.521    70.47
3397.73   26.600    70.61
3407.73   26.676    70.76






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 16:36:01



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