Double Star Calculator - Orbit

Orbital Elements for STF3001AB

WDS:	STF3001AB	WDS ID/Discoverer
P:	2198.724	Orbital period (years)
a:	9.52716	Semi-major axis (arcseconds)
i:	71.159	Inclination (degrees)
Ω:	137.169	Longitude of ascending node (degrees)
T:	1744.046	Epoch of periastron passage (year)
e:	0.91375	Eccentricity
ω:	289.955	Longitude of periastron (degrees)
Start-Year:	925.6378500000001	Year
End-Year:	3124.36215	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF3001AB
Position:	231837.41+680641.1	Epoch-2000 right ascension and declination
WDS-ID:	23186+6807	WDS designation
Discoverer Code:	STF3001AB	Discover designation and components
ADS number:	16666	Aitken Double Star catalog
HD number:	219916	HD catalog number
Hipparcos number:	115088	Hipparcos catalog number
V1:	4.97	Magnitude of the primary
V2:	7.28	Magnitude of the secondary
Equinox:		Equinox
Date:	2014	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 STF3001AB

WDS 6th Orbit including measures of STF3001AB

-- 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 STF3001AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.476   224.30
--------------------------
925.64    9.016   282.72
935.64    9.027   282.96
945.64    9.037   283.20
955.64    9.045   283.43
965.64    9.053   283.67
975.64    9.060   283.91
985.64    9.065   284.15
995.64    9.069   284.38
1005.64    9.073   284.62
1015.64    9.075   284.86
1025.64    9.075   285.10
1035.64    9.075   285.33
1045.64    9.073   285.57
1055.64    9.071   285.81
1065.64    9.067   286.04
1075.64    9.061   286.28
1085.64    9.055   286.52
1095.64    9.047   286.76
1105.64    9.037   286.99
1115.64    9.026   287.23
1125.64    9.014   287.47
1135.64    9.001   287.71
1145.64    8.986   287.95
1155.64    8.969   288.20
1165.64    8.951   288.44
1175.64    8.932   288.68
1185.64    8.911   288.93
1195.64    8.888   289.17
1205.64    8.863   289.42
1215.64    8.837   289.67
1225.64    8.810   289.92
1235.64    8.780   290.17
1245.64    8.749   290.43
1255.64    8.715   290.68
1265.64    8.680   290.94
1275.64    8.643   291.20
1285.64    8.604   291.46
1295.64    8.563   291.73
1305.64    8.519   291.99
1315.64    8.474   292.26
1325.64    8.426   292.54
1335.64    8.376   292.81
1345.64    8.323   293.09
1355.64    8.268   293.38
1365.64    8.210   293.66
1375.64    8.150   293.96
1385.64    8.087   294.25
1395.64    8.021   294.55
1405.64    7.952   294.86
1415.64    7.880   295.17
1425.64    7.805   295.49
1435.64    7.726   295.81
1445.64    7.644   296.14
1455.64    7.558   296.48
1465.64    7.468   296.82
1475.64    7.374   297.18
1485.64    7.276   297.54
1495.64    7.173   297.91
1505.64    7.066   298.30
1515.64    6.953   298.69
1525.64    6.836   299.10
1535.64    6.712   299.53
1545.64    6.582   299.97
1555.64    6.445   300.43
1565.64    6.302   300.91
1575.64    6.150   301.41
1585.64    5.990   301.94
1595.64    5.821   302.50
1605.64    5.642   303.10
1615.64    5.451   303.73
1625.64    5.248   304.41
1635.64    5.030   305.15
1645.64    4.795   305.96
1655.64    4.542   306.85
1665.64    4.266   307.86
1675.64    3.962   309.01
1685.64    3.625   310.36
1695.64    3.245   312.02
1705.64    2.806   314.15
1715.64    2.284   317.17
1725.64    1.634   322.32
1735.64    0.771   337.25
1745.64    0.517   111.63
1755.64    1.271   138.84
1765.64    1.654   147.87
1775.64    1.875   154.10
1785.64    2.023   159.22
1795.64    2.131   163.73
1805.64    2.215   167.86
1815.64    2.285   171.71
1825.64    2.346   175.34
1835.64    2.401   178.80
1845.64    2.453   182.11
1855.64    2.503   185.29
1865.64    2.553   188.34
1875.64    2.602   191.28
1885.64    2.652   194.10
1895.64    2.702   196.82
1905.64    2.754   199.44
1915.64    2.807   201.97
1925.64    2.861   204.40
1935.64    2.916   206.73
1945.64    2.973   208.98
1955.64    3.031   211.15
1965.64    3.090   213.23
1975.64    3.151   215.23
1985.64    3.213   217.16
1995.64    3.276   219.01
2005.64    3.340   220.79
2015.64    3.404   222.51
2025.64    3.470   224.16
2035.64    3.537   225.75
2045.64    3.604   227.28
2055.64    3.672   228.75
2065.64    3.740   230.17
2075.64    3.809   231.54
2085.64    3.878   232.86
2095.64    3.948   234.13
2105.64    4.018   235.36
2115.64    4.089   236.55
2125.64    4.159   237.70
2135.64    4.230   238.80
2145.64    4.301   239.88
2155.64    4.372   240.91
2165.64    4.443   241.92
2175.64    4.514   242.89
2185.64    4.585   243.83
2195.64    4.655   244.75
2205.64    4.726   245.63
2215.64    4.797   246.49
2225.64    4.867   247.33
2235.64    4.938   248.14
2245.64    5.008   248.93
2255.64    5.078   249.69
2265.64    5.147   250.44
2275.64    5.217   251.17
2285.64    5.286   251.87
2295.64    5.355   252.56
2305.64    5.423   253.23
2315.64    5.491   253.89
2325.64    5.559   254.53
2335.64    5.626   255.15
2345.64    5.693   255.76
2355.64    5.759   256.35
2365.64    5.825   256.93
2375.64    5.891   257.50
2385.64    5.956   258.06
2395.64    6.021   258.60
2405.64    6.085   259.13
2415.64    6.149   259.66
2425.64    6.213   260.17
2435.64    6.275   260.67
2445.64    6.338   261.16
2455.64    6.400   261.64
2465.64    6.461   262.11
2475.64    6.522   262.57
2485.64    6.582   263.03
2495.64    6.641   263.47
2505.64    6.701   263.91
2515.64    6.759   264.34
2525.64    6.817   264.76
2535.64    6.875   265.18
2545.64    6.931   265.59
2555.64    6.988   265.99
2565.64    7.043   266.39
2575.64    7.098   266.78
2585.64    7.153   267.16
2595.64    7.207   267.54
2605.64    7.260   267.91
2615.64    7.312   268.28
2625.64    7.364   268.64
2635.64    7.416   269.00
2645.64    7.466   269.35
2655.64    7.516   269.70
2665.64    7.566   270.04
2675.64    7.614   270.38
2685.64    7.662   270.71
2695.64    7.710   271.04
2705.64    7.757   271.37
2715.64    7.803   271.69
2725.64    7.848   272.01
2735.64    7.893   272.33
2745.64    7.936   272.64
2755.64    7.980   272.95
2765.64    8.022   273.25
2775.64    8.064   273.55
2785.64    8.105   273.85
2795.64    8.145   274.14
2805.64    8.185   274.44
2815.64    8.224   274.73
2825.64    8.262   275.01
2835.64    8.299   275.30
2845.64    8.336   275.58
2855.64    8.372   275.86
2865.64    8.407   276.14
2875.64    8.441   276.41
2885.64    8.474   276.68
2895.64    8.507   276.95
2905.64    8.539   277.22
2915.64    8.570   277.49
2925.64    8.600   277.75
2935.64    8.629   278.02
2945.64    8.658   278.28
2955.64    8.686   278.54
2965.64    8.712   278.79
2975.64    8.738   279.05
2985.64    8.763   279.31
2995.64    8.788   279.56
3005.64    8.811   279.81
3015.64    8.833   280.06
3025.64    8.855   280.31
3035.64    8.875   280.56
3045.64    8.895   280.81
3055.64    8.914   281.05
3065.64    8.932   281.30
3075.64    8.948   281.54
3085.64    8.964   281.78
3095.64    8.979   282.03
3105.64    8.993   282.27
3115.64    9.006   282.51

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 18:49:47