Double Star Calculator - Orbit

Orbital Elements for STF1355
WDS: STF1355 WDS ID/Discoverer
P: 1073.734 Orbital period (years)
a: 3.32815 Semi-major axis (arcseconds)
i: 60.16 Inclination (degrees)
Ω: 23.83 Longitude of ascending node (degrees)
T: 2082.534 Epoch of periastron passage (year)
e: 0.89032 Eccentricity
ω: 93.875 Longitude of periastron (degrees)
Start-Year: 1488.13305 Year
End-Year: 2561.86695 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1355
Position: 092716.69+061359.0 Epoch-2000 right ascension and declination
WDS-ID: 09273+0614 WDS designation
Discoverer Code: STF1355 Discover designation and components
ADS number: 7380 Aitken Double Star catalog
HD number: 81670 HD catalog number
Hipparcos number: 46367 Hipparcos catalog number
V1: 7.71 Magnitude of the primary
V2: 7.76 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for STF1355



WDS 6th Orbit including measures of STF1355

-- 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 STF1355
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.645   357.60
--------------------------
1488.13    3.110   296.65
1498.13    3.119   297.52
1508.13    3.128   298.38
1518.13    3.136   299.24
1528.13    3.142   300.09
1538.13    3.148   300.94
1548.13    3.153   301.79
1558.13    3.157   302.64
1568.13    3.160   303.48
1578.13    3.163   304.32
1588.13    3.164   305.16
1598.13    3.164   306.00
1608.13    3.164   306.84
1618.13    3.162   307.68
1628.13    3.160   308.53
1638.13    3.156   309.37
1648.13    3.151   310.22
1658.13    3.146   311.06
1668.13    3.139   311.92
1678.13    3.132   312.77
1688.13    3.123   313.63
1698.13    3.113   314.50
1708.13    3.102   315.37
1718.13    3.090   316.25
1728.13    3.076   317.13
1738.13    3.061   318.03
1748.13    3.045   318.93
1758.13    3.028   319.84
1768.13    3.010   320.76
1778.13    2.989   321.70
1788.13    2.968   322.65
1798.13    2.945   323.61
1808.13    2.920   324.59
1818.13    2.894   325.58
1828.13    2.866   326.60
1838.13    2.836   327.63
1848.13    2.804   328.69
1858.13    2.770   329.77
1868.13    2.734   330.88
1878.13    2.696   332.03
1888.13    2.655   333.20
1898.13    2.611   334.42
1908.13    2.565   335.67
1918.13    2.516   336.97
1928.13    2.463   338.33
1938.13    2.407   339.75
1948.13    2.346   341.24
1958.13    2.281   342.81
1968.13    2.211   344.48
1978.13    2.135   346.26
1988.13    2.052   348.18
1998.13    1.962   350.27
2008.13    1.862   352.57
2018.13    1.750   355.15
2028.13    1.624   358.11
2038.13    1.478     1.61
2048.13    1.305     5.95
2058.13    1.089    11.83
2068.13    0.797    21.35
2078.13    0.347    49.92
2088.13    0.436   189.62
2098.13    0.821   211.81
2108.13    1.062   221.31
2118.13    1.239   227.67
2128.13    1.382   232.56
2138.13    1.503   236.61
2148.13    1.608   240.08
2158.13    1.702   243.15
2168.13    1.787   245.92
2178.13    1.865   248.44
2188.13    1.938   250.76
2198.13    2.005   252.93
2208.13    2.068   254.96
2218.13    2.127   256.87
2228.13    2.183   258.68
2238.13    2.236   260.41
2248.13    2.286   262.05
2258.13    2.334   263.63
2268.13    2.379   265.15
2278.13    2.423   266.61
2288.13    2.465   268.01
2298.13    2.504   269.38
2308.13    2.543   270.70
2318.13    2.579   271.98
2328.13    2.614   273.23
2338.13    2.648   274.45
2348.13    2.680   275.63
2358.13    2.711   276.79
2368.13    2.741   277.92
2378.13    2.769   279.03
2388.13    2.797   280.12
2398.13    2.823   281.18
2408.13    2.848   282.23
2418.13    2.872   283.26
2428.13    2.895   284.27
2438.13    2.917   285.26
2448.13    2.938   286.25
2458.13    2.958   287.21
2468.13    2.977   288.17
2478.13    2.995   289.11
2488.13    3.012   290.05
2498.13    3.028   290.97
2508.13    3.043   291.88
2518.13    3.058   292.79
2528.13    3.071   293.68
2538.13    3.084   294.57
2548.13    3.095   295.45
2558.13    3.106   296.33






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 16:18:17



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