Double Star Calculator - Orbit

Orbital Elements for STT250
WDS: STT250 WDS ID/Discoverer
P: 1055.000 Orbital period (years)
a: 0.652 Semi-major axis (arcseconds)
i: 73.6 Inclination (degrees)
Ω: 174.9 Longitude of ascending node (degrees)
T: 2059.400 Epoch of periastron passage (year)
e: 0.77 Eccentricity
ω: 270.3 Longitude of periastron (degrees)
Start-Year: 1497.5 Year
End-Year: 2552.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT250
Position: 122424.51+430515.0 Epoch-2000 right ascension and declination
WDS-ID: 12244+4305 WDS designation
Discoverer Code: STT250 Discover designation and components
ADS number: 8540 Aitken Double Star catalog
HD number: 108005 HD catalog number
Hipparcos number: 60522 Hipparcos catalog number
V1: 8.27 Magnitude of the primary
V2: 9.18 Magnitude of the secondary
Equinox: Equinox
Date: 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: PkO2018b Reference

Double Star Orbit for STT250



WDS 6th Orbit including measures of STT250

-- 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 STT250
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.262   355.28
--------------------------
1497.50    0.327   257.52
1507.50    0.326   259.96
1517.50    0.326   262.42
1527.50    0.326   264.88
1537.50    0.326   267.34
1547.50    0.327   269.79
1557.50    0.328   272.23
1567.50    0.329   274.66
1577.50    0.331   277.05
1587.50    0.333   279.42
1597.50    0.336   281.76
1607.50    0.338   284.06
1617.50    0.342   286.32
1627.50    0.345   288.54
1637.50    0.349   290.71
1647.50    0.353   292.84
1657.50    0.357   294.92
1667.50    0.361   296.94
1677.50    0.366   298.92
1687.50    0.370   300.85
1697.50    0.375   302.73
1707.50    0.380   304.57
1717.50    0.385   306.35
1727.50    0.390   308.09
1737.50    0.395   309.78
1747.50    0.400   311.44
1757.50    0.405   313.05
1767.50    0.410   314.62
1777.50    0.415   316.16
1787.50    0.419   317.66
1797.50    0.424   319.13
1807.50    0.428   320.57
1817.50    0.432   321.98
1827.50    0.436   323.37
1837.50    0.439   324.74
1847.50    0.442   326.09
1857.50    0.444   327.42
1867.50    0.446   328.74
1877.50    0.447   330.05
1887.50    0.448   331.35
1897.50    0.448   332.65
1907.50    0.446   333.96
1917.50    0.444   335.28
1927.50    0.441   336.61
1937.50    0.436   337.97
1947.50    0.430   339.37
1957.50    0.421   340.81
1967.50    0.411   342.32
1977.50    0.398   343.91
1987.50    0.381   345.64
1997.50    0.360   347.54
2007.50    0.334   349.71
2017.50    0.300   352.30
2027.50    0.257   355.67
2037.50    0.200     0.71
2047.50    0.125    11.00
2057.50    0.047    59.90
2067.50    0.094   150.70
2077.50    0.174   166.44
2087.50    0.237   172.67
2097.50    0.285   176.51
2107.50    0.321   179.35
2117.50    0.349   181.67
2127.50    0.372   183.68
2137.50    0.389   185.48
2147.50    0.403   187.14
2157.50    0.414   188.71
2167.50    0.423   190.20
2177.50    0.430   191.63
2187.50    0.435   193.03
2197.50    0.438   194.40
2207.50    0.441   195.75
2217.50    0.442   197.09
2227.50    0.442   198.43
2237.50    0.442   199.77
2247.50    0.441   201.11
2257.50    0.439   202.46
2267.50    0.436   203.82
2277.50    0.434   205.21
2287.50    0.430   206.61
2297.50    0.427   208.03
2307.50    0.423   209.48
2317.50    0.419   210.95
2327.50    0.414   212.46
2337.50    0.410   214.00
2347.50    0.405   215.57
2357.50    0.400   217.19
2367.50    0.395   218.84
2377.50    0.390   220.53
2387.50    0.385   222.27
2397.50    0.381   224.05
2407.50    0.376   225.88
2417.50    0.371   227.75
2427.50    0.366   229.68
2437.50    0.362   231.65
2447.50    0.357   233.67
2457.50    0.353   235.74
2467.50    0.349   237.86
2477.50    0.346   240.03
2487.50    0.342   242.24
2497.50    0.339   244.49
2507.50    0.336   246.79
2517.50    0.334   249.12
2527.50    0.331   251.49
2537.50    0.329   253.88
2547.50    0.328   256.30






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 16:45:57



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