Double Star Calculator - Orbit

Orbital Elements for STF1788AB
WDS: STF1788AB WDS ID/Discoverer
P: 1036.507 Orbital period (years)
a: 5.12252 Semi-major axis (arcseconds)
i: 73.799 Inclination (degrees)
Ω: 114.685 Longitude of ascending node (degrees)
T: 2165.549 Epoch of periastron passage (year)
e: 0.5392 Eccentricity
ω: 74.113 Longitude of periastron (degrees)
Start-Year: 1506.7464 Year
End-Year: 2543.2536 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1788AB
Position: 135458.20-080331.9 Epoch-2000 right ascension and declination
WDS-ID: 13550-0804 WDS designation
Discoverer Code: STF1788AB Discover designation and components
ADS number: 9053 Aitken Double Star catalog
HD number: 121325 HD catalog number
Hipparcos number: 67953 Hipparcos catalog number
V1: 6.68 Magnitude of the primary
V2: 7.26 Magnitude of the secondary
Equinox: Equinox
Date: 2014 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 STF1788AB



WDS 6th Orbit including measures of STF1788AB

-- 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 STF1788AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.675   102.24
--------------------------
1506.75    4.503   317.24
1516.75    4.411   318.31
1526.75    4.316   319.44
1536.75    4.218   320.61
1546.75    4.116   321.85
1556.75    4.013   323.14
1566.75    3.907   324.51
1576.75    3.799   325.95
1586.75    3.690   327.48
1596.75    3.580   329.10
1606.75    3.469   330.83
1616.75    3.358   332.67
1626.75    3.247   334.63
1636.75    3.137   336.73
1646.75    3.028   338.99
1656.75    2.922   341.41
1666.75    2.818   344.01
1676.75    2.717   346.81
1686.75    2.621   349.81
1696.75    2.530   353.05
1706.75    2.444   356.51
1716.75    2.366     0.22
1726.75    2.296     4.16
1736.75    2.235     8.34
1746.75    2.184    12.73
1756.75    2.144    17.30
1766.75    2.116    22.03
1776.75    2.100    26.85
1786.75    2.097    31.72
1796.75    2.106    36.57
1806.75    2.128    41.35
1816.75    2.162    46.01
1826.75    2.206    50.50
1836.75    2.261    54.80
1846.75    2.325    58.88
1856.75    2.396    62.72
1866.75    2.474    66.34
1876.75    2.557    69.72
1886.75    2.645    72.89
1896.75    2.736    75.85
1906.75    2.828    78.62
1916.75    2.922    81.21
1926.75    3.015    83.64
1936.75    3.107    85.93
1946.75    3.196    88.08
1956.75    3.282    90.13
1966.75    3.363    92.07
1976.75    3.438    93.92
1986.75    3.506    95.69
1996.75    3.566    97.40
2006.75    3.615    99.07
2016.75    3.652   100.69
2026.75    3.675   102.28
2036.75    3.683   103.86
2046.75    3.671   105.44
2056.75    3.637   107.05
2066.75    3.578   108.69
2076.75    3.491   110.40
2086.75    3.369   112.22
2096.75    3.209   114.20
2106.75    3.005   116.41
2116.75    2.753   118.99
2126.75    2.449   122.16
2136.75    2.092   126.32
2146.75    1.689   132.36
2156.75    1.260   142.42
2166.75    0.863   162.40
2176.75    0.667   202.57
2186.75    0.857   243.11
2196.75    1.256   263.32
2206.75    1.698   273.37
2216.75    2.129   279.28
2226.75    2.532   283.24
2236.75    2.901   286.15
2246.75    3.233   288.43
2256.75    3.532   290.31
2266.75    3.797   291.90
2276.75    4.033   293.30
2286.75    4.240   294.55
2296.75    4.422   295.69
2306.75    4.580   296.75
2316.75    4.717   297.74
2326.75    4.833   298.67
2336.75    4.932   299.57
2346.75    5.014   300.44
2356.75    5.080   301.28
2366.75    5.132   302.10
2376.75    5.171   302.91
2386.75    5.197   303.70
2396.75    5.212   304.49
2406.75    5.216   305.28
2416.75    5.210   306.07
2426.75    5.195   306.86
2436.75    5.171   307.66
2446.75    5.139   308.46
2456.75    5.099   309.28
2466.75    5.053   310.11
2476.75    4.999   310.96
2486.75    4.939   311.83
2496.75    4.874   312.71
2506.75    4.803   313.63
2516.75    4.727   314.57
2526.75    4.646   315.55
2536.75    4.561   316.56






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 17:00:15



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