Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:59:43

Orbital Elements for STT81AB
WDS: STT81AB WDS ID/Discoverer
P: 1885.959 Orbital period (years)
a: 16.46579 Semi-major axis (arcseconds)
i: 100.726 Inclination (degrees)
Ω: 70.746 Longitude of ascending node (degrees)
T: 1743.571 Epoch of periastron passage (year)
e: 0.88101 Eccentricity
ω: 286.697 Longitude of periastron (degrees)
Start-Year: 1083.0 Year
End-Year: 2967.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT81AB
Position: 042437.46+335734.9 Epoch-2000 right ascension and declination
WDS-ID: 04246+3358 WDS designation
Discoverer Code: STT81AB Discover designation and components
ADS number: 3188 Aitken Double Star catalog
HD number: 27786 HD catalog number
Hipparcos number: 20591 Hipparcos catalog number
V1: 5.84 Magnitude of the primary
V2: 9.25 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT81AB



WDS 6th Orbit including measures of STT81AB

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


Ephemeris of STT81AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     4.183     10.0
-------------------------
1083.0    12.924    273.2
1093.0    12.983    273.0
1103.0    13.039    272.7
1113.0    13.094    272.4
1123.0    13.145    272.2
1133.0    13.195    271.9
1143.0    13.241    271.6
1153.0    13.285    271.4
1163.0    13.327    271.1
1173.0    13.365    270.9
1183.0    13.401    270.6
1193.0    13.434    270.4
1203.0    13.463    270.1
1213.0    13.490    269.9
1223.0    13.513    269.6
1233.0    13.534    269.4
1243.0    13.551    269.1
1253.0    13.564    268.9
1263.0    13.574    268.6
1273.0    13.580    268.4
1283.0    13.583    268.1
1293.0    13.581    267.9
1303.0    13.576    267.6
1313.0    13.567    267.4
1323.0    13.553    267.1
1333.0    13.535    266.9
1343.0    13.512    266.6
1353.0    13.485    266.4
1363.0    13.452    266.1
1373.0    13.415    265.9
1383.0    13.372    265.6
1393.0    13.323    265.4
1403.0    13.269    265.1
1413.0    13.209    264.9
1423.0    13.143    264.6
1433.0    13.070    264.3
1443.0    12.990    264.1
1453.0    12.902    263.8
1463.0    12.808    263.5
1473.0    12.705    263.2
1483.0    12.593    262.9
1493.0    12.473    262.7
1503.0    12.343    262.4
1513.0    12.203    262.1
1523.0    12.053    261.7
1533.0    11.890    261.4
1543.0    11.715    261.1
1553.0    11.527    260.8
1563.0    11.324    260.4
1573.0    11.106    260.1
1583.0    10.870    259.7
1593.0    10.616    259.3
1603.0    10.340    258.9
1613.0    10.041    258.4
1623.0     9.716    258.0
1633.0     9.361    257.5
1643.0     8.972    256.9
1653.0     8.543    256.3
1663.0     8.067    255.7
1673.0     7.534    254.9
1683.0     6.932    254.0
1693.0     6.240    253.0
1703.0     5.430    251.7
1713.0     4.455    249.8
1723.0     3.235    246.7
1733.0     1.649    238.4
1743.0     0.568    109.5
1753.0     2.242     74.8
1763.0     3.292     68.9
1773.0     3.907     65.4
1783.0     4.291     62.7
1793.0     4.539     60.4
1803.0     4.701     58.2
1813.0     4.805     56.2
1823.0     4.867     54.3
1833.0     4.898     52.4
1843.0     4.907     50.5
1853.0     4.898     48.6
1863.0     4.875     46.7
1873.0     4.843     44.7
1883.0     4.803     42.8
1893.0     4.757     40.8
1903.0     4.708     38.7
1913.0     4.655     36.7
1923.0     4.602     34.5
1933.0     4.549     32.4
1943.0     4.496     30.1
1953.0     4.445     27.8
1963.0     4.396     25.5
1973.0     4.350     23.1
1983.0     4.308     20.7
1993.0     4.271     18.2
2003.0     4.237     15.7
2013.0     4.209     13.1
2023.0     4.187     10.6
2033.0     4.171      8.0
2043.0     4.160      5.3
2053.0     4.156      2.7
2063.0     4.159      0.1
2073.0     4.168    357.4
2083.0     4.183    354.8
2093.0     4.206    352.2
2103.0     4.235    349.7
2113.0     4.270    347.1
2123.0     4.312    344.7
2133.0     4.360    342.2
2143.0     4.414    339.9
2153.0     4.473    337.6
2163.0     4.538    335.3
2173.0     4.609    333.1
2183.0     4.684    331.0
2193.0     4.764    329.0
2203.0     4.848    327.0
2213.0     4.936    325.1
2223.0     5.028    323.3
2233.0     5.124    321.5
2243.0     5.222    319.8
2253.0     5.324    318.2
2263.0     5.429    316.6
2273.0     5.536    315.1
2283.0     5.646    313.6
2293.0     5.757    312.2
2303.0     5.871    310.9
2313.0     5.986    309.6
2323.0     6.103    308.3
2333.0     6.221    307.1
2343.0     6.340    306.0
2353.0     6.461    304.8
2363.0     6.582    303.8
2373.0     6.704    302.7
2383.0     6.827    301.7
2393.0     6.951    300.8
2403.0     7.075    299.9
2413.0     7.199    299.0
2423.0     7.324    298.1
2433.0     7.449    297.3
2443.0     7.573    296.5
2453.0     7.698    295.7
2463.0     7.823    294.9
2473.0     7.948    294.2
2483.0     8.072    293.5
2493.0     8.197    292.8
2503.0     8.320    292.1
2513.0     8.444    291.5
2523.0     8.567    290.8
2533.0     8.689    290.2
2543.0     8.811    289.6
2553.0     8.933    289.1
2563.0     9.053    288.5
2573.0     9.173    287.9
2583.0     9.292    287.4
2593.0     9.411    286.9
2603.0     9.528    286.4
2613.0     9.645    285.9
2623.0     9.761    285.4
2633.0     9.876    284.9
2643.0     9.989    284.5
2653.0    10.102    284.0
2663.0    10.214    283.6
2673.0    10.324    283.1
2683.0    10.434    282.7
2693.0    10.542    282.3
2703.0    10.649    281.9
2713.0    10.755    281.5
2723.0    10.859    281.1
2733.0    10.962    280.7
2743.0    11.064    280.3
2753.0    11.165    280.0
2763.0    11.264    279.6
2773.0    11.361    279.3
2783.0    11.457    278.9
2793.0    11.552    278.6
2803.0    11.645    278.2
2813.0    11.736    277.9
2823.0    11.826    277.6
2833.0    11.914    277.2
2843.0    12.000    276.9
2853.0    12.084    276.6
2863.0    12.167    276.3
2873.0    12.248    276.0
2883.0    12.327    275.7
2893.0    12.404    275.4
2903.0    12.480    275.1
2913.0    12.553    274.8
2923.0    12.624    274.5
2933.0    12.693    274.2
2943.0    12.760    274.0
2953.0    12.825    273.7
2963.0    12.888    273.4






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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