Double Star Calculator - Orbit

Orbital Elements for STF589AB

WDS:	STF589AB	WDS ID/Discoverer
P:	1191.401	Orbital period (years)
a:	5.7533	Semi-major axis (arcseconds)
i:	120.764	Inclination (degrees)
Ω:	156.743	Longitude of ascending node (degrees)
T:	1679.832	Epoch of periastron passage (year)
e:	0.64885	Eccentricity
ω:	97.965	Longitude of periastron (degrees)
Start-Year:	1429.29935	Year
End-Year:	2620.7006499999998	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF589AB
Position:	044448.23+051722.3	Epoch-2000 right ascension and declination
WDS-ID:	04448+0517	WDS designation
Discoverer Code:	STF589AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.78	Magnitude of the primary
V2:	8.92	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 STF589AB

WDS 6th Orbit including measures of STF589AB

-- 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 STF589AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.615   274.58
--------------------------
1429.30    5.520   185.10
1439.30    5.488   183.82
1449.30    5.451   182.52
1459.30    5.406   181.20
1469.30    5.355   179.85
1479.30    5.296   178.48
1489.30    5.229   177.08
1499.30    5.152   175.63
1509.30    5.065   174.14
1519.30    4.967   172.59
1529.30    4.857   170.98
1539.30    4.733   169.29
1549.30    4.593   167.50
1559.30    4.437   165.59
1569.30    4.261   163.53
1579.30    4.064   161.29
1589.30    3.842   158.80
1599.30    3.593   155.98
1609.30    3.313   152.71
1619.30    2.998   148.80
1629.30    2.646   143.91
1639.30    2.258   137.41
1649.30    1.842   128.06
1659.30    1.430   113.23
1669.30    1.113    88.22
1679.30    1.055    53.30
1689.30    1.297    23.87
1699.30    1.680     5.88
1709.30    2.080   354.77
1719.30    2.449   347.15
1729.30    2.772   341.43
1739.30    3.050   336.84
1749.30    3.288   332.96
1759.30    3.491   329.58
1769.30    3.663   326.54
1779.30    3.811   323.75
1789.30    3.936   321.16
1799.30    4.044   318.72
1809.30    4.135   316.39
1819.30    4.213   314.16
1829.30    4.280   312.00
1839.30    4.337   309.90
1849.30    4.385   307.86
1859.30    4.425   305.85
1869.30    4.460   303.88
1879.30    4.488   301.93
1889.30    4.512   300.01
1899.30    4.532   298.11
1909.30    4.548   296.22
1919.30    4.561   294.34
1929.30    4.572   292.48
1939.30    4.581   290.62
1949.30    4.588   288.77
1959.30    4.593   286.92
1969.30    4.598   285.08
1979.30    4.601   283.24
1989.30    4.604   281.40
1999.30    4.607   279.56
2009.30    4.610   277.73
2019.30    4.613   275.90
2029.30    4.616   274.07
2039.30    4.619   272.24
2049.30    4.623   270.42
2059.30    4.628   268.60
2069.30    4.633   266.79
2079.30    4.640   264.98
2089.30    4.647   263.17
2099.30    4.655   261.37
2109.30    4.664   259.58
2119.30    4.675   257.79
2129.30    4.686   256.02
2139.30    4.699   254.25
2149.30    4.713   252.49
2159.30    4.728   250.74
2169.30    4.744   249.01
2179.30    4.762   247.28
2189.30    4.780   245.57
2199.30    4.800   243.88
2209.30    4.821   242.19
2219.30    4.842   240.53
2229.30    4.865   238.87
2239.30    4.889   237.24
2249.30    4.914   235.62
2259.30    4.939   234.01
2269.30    4.965   232.43
2279.30    4.992   230.85
2289.30    5.020   229.30
2299.30    5.048   227.77
2309.30    5.076   226.25
2319.30    5.105   224.74
2329.30    5.134   223.26
2339.30    5.164   221.79
2349.30    5.193   220.34
2359.30    5.222   218.90
2369.30    5.252   217.48
2379.30    5.281   216.08
2389.30    5.309   214.69
2399.30    5.337   213.32
2409.30    5.365   211.96
2419.30    5.392   210.61
2429.30    5.417   209.28
2439.30    5.442   207.96
2449.30    5.466   206.65
2459.30    5.489   205.35
2469.30    5.510   204.07
2479.30    5.529   202.79
2489.30    5.547   201.52
2499.30    5.563   200.26
2509.30    5.576   199.00
2519.30    5.588   197.75
2529.30    5.597   196.51
2539.30    5.603   195.27
2549.30    5.606   194.03
2559.30    5.606   192.79
2569.30    5.603   191.55
2579.30    5.596   190.31
2589.30    5.585   189.06
2599.30    5.569   187.81
2609.30    5.549   186.55
2619.30    5.524   185.28

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 15:29:27