Double Star Calculator - Orbit

Orbital Elements for STF422

WDS:	STF422	WDS ID/Discoverer
P:	1210.130	Orbital period (years)
a:	9.91243	Semi-major axis (arcseconds)
i:	62.963	Inclination (degrees)
Ω:	28.852	Longitude of ascending node (degrees)
T:	1729.471	Epoch of periastron passage (year)
e:	0.7279	Eccentricity
ω:	103.033	Longitude of periastron (degrees)
Start-Year:	1419.9352	Year
End-Year:	2630.0648	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF422
Position:	033647.30+003515.9	Epoch-2000 right ascension and declination
WDS-ID:	03368+0035	WDS designation
Discoverer Code:	STF422	Discover designation and components
ADS number:	2644	Aitken Double Star catalog
HD number:	22468	HD catalog number
Hipparcos number:	16846	Hipparcos catalog number
V1:	6.00	Magnitude of the primary
V2:	8.90	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:	n	Flags
Ephemerides:		Ephemerides
Code:	Izm2019	Reference

Double Star Orbit for STF422

WDS 6th Orbit including measures of STF422

-- 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 STF422

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    6.742   275.38
--------------------------
1419.94    9.798   356.78
1429.94    9.782   357.73
1439.94    9.759   358.68
1449.94    9.729   359.64
1459.94    9.691     0.61
1469.94    9.645     1.58
1479.94    9.590     2.57
1489.94    9.526     3.56
1499.94    9.451     4.57
1509.94    9.366     5.60
1519.94    9.269     6.65
1529.94    9.159     7.73
1539.94    9.035     8.83
1549.94    8.897     9.96
1559.94    8.742    11.13
1569.94    8.568    12.35
1579.94    8.376    13.62
1589.94    8.161    14.95
1599.94    7.921    16.36
1609.94    7.654    17.86
1619.94    7.356    19.48
1629.94    7.022    21.24
1639.94    6.646    23.19
1649.94    6.223    25.39
1659.94    5.744    27.93
1669.94    5.199    30.98
1679.94    4.575    34.79
1689.94    3.860    39.93
1699.94    3.047    47.64
1709.94    2.161    61.46
1719.94    1.389    92.84
1729.94    1.362   148.16
1739.94    2.097   181.17
1749.94    2.916   195.99
1759.94    3.611   204.58
1769.94    4.167   210.60
1779.94    4.608   215.32
1789.94    4.959   219.30
1799.94    5.241   222.80
1809.94    5.470   225.97
1819.94    5.656   228.91
1829.94    5.810   231.68
1839.94    5.937   234.32
1849.94    6.043   236.86
1859.94    6.131   239.32
1869.94    6.206   241.71
1879.94    6.269   244.05
1889.94    6.323   246.35
1899.94    6.369   248.61
1909.94    6.410   250.85
1919.94    6.446   253.05
1929.94    6.478   255.23
1939.94    6.507   257.39
1949.94    6.535   259.54
1959.94    6.562   261.66
1969.94    6.587   263.77
1979.94    6.613   265.86
1989.94    6.639   267.94
1999.94    6.666   269.99
2009.94    6.694   272.04
2019.94    6.723   274.06
2029.94    6.753   276.07
2039.94    6.785   278.06
2049.94    6.819   280.02
2059.94    6.855   281.97
2069.94    6.893   283.90
2079.94    6.933   285.81
2089.94    6.975   287.69
2099.94    7.019   289.55
2109.94    7.066   291.39
2119.94    7.114   293.20
2129.94    7.165   294.99
2139.94    7.217   296.75
2149.94    7.272   298.49
2159.94    7.329   300.20
2169.94    7.387   301.88
2179.94    7.447   303.54
2189.94    7.509   305.17
2199.94    7.572   306.77
2209.94    7.637   308.35
2219.94    7.703   309.89
2229.94    7.770   311.42
2239.94    7.838   312.91
2249.94    7.907   314.38
2259.94    7.977   315.83
2269.94    8.048   317.25
2279.94    8.119   318.64
2289.94    8.191   320.01
2299.94    8.263   321.36
2309.94    8.335   322.68
2319.94    8.407   323.98
2329.94    8.479   325.26
2339.94    8.551   326.51
2349.94    8.622   327.75
2359.94    8.692   328.97
2369.94    8.762   330.16
2379.94    8.831   331.34
2389.94    8.899   332.50
2399.94    8.966   333.64
2409.94    9.032   334.77
2419.94    9.096   335.87
2429.94    9.159   336.97
2439.94    9.220   338.05
2449.94    9.278   339.11
2459.94    9.335   340.16
2469.94    9.390   341.20
2479.94    9.442   342.23
2489.94    9.492   343.25
2499.94    9.538   344.25
2509.94    9.582   345.25
2519.94    9.623   346.24
2529.94    9.660   347.22
2539.94    9.694   348.19
2549.94    9.724   349.16
2559.94    9.750   350.12
2569.94    9.772   351.07
2579.94    9.790   352.03
2589.94    9.802   352.98
2599.94    9.810   353.92
2609.94    9.812   354.87
2619.94    9.808   355.82
2629.94    9.799   356.76

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 15:12:48