Double Star Calculator - Orbit

Orbital Elements for STT424AB
WDS: STT424AB WDS ID/Discoverer
P: 1629.000 Orbital period (years)
a: 0.547 Semi-major axis (arcseconds)
i: 121.2 Inclination (degrees)
Ω: 128.2 Longitude of ascending node (degrees)
T: 1686.300 Epoch of periastron passage (year)
e: 0.223 Eccentricity
ω: 89.9 Longitude of periastron (degrees)
Start-Year: 1210.5 Year
End-Year: 2839.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT424AB
Position: 205916.45+153421.8 Epoch-2000 right ascension and declination
WDS-ID: 20593+1534 WDS designation
Discoverer Code: STT424AB Discover designation and components
ADS number: 14505 Aitken Double Star catalog
HD number: 199839 HD catalog number
Hipparcos number: 103584 Hipparcos catalog number
V1: 8.43 Magnitude of the primary
V2: 9.39 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 STT424AB



WDS 6th Orbit including measures of STT424AB

-- 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 STT424AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.536   302.57
--------------------------
1210.50    0.513   149.99
1220.50    0.517   148.73
1230.50    0.521   147.49
1240.50    0.525   146.27
1250.50    0.528   145.07
1260.50    0.531   143.88
1270.50    0.533   142.70
1280.50    0.535   141.53
1290.50    0.537   140.37
1300.50    0.538   139.21
1310.50    0.538   138.06
1320.50    0.538   136.90
1330.50    0.537   135.75
1340.50    0.536   134.59
1350.50    0.535   133.43
1360.50    0.532   132.25
1370.50    0.529   131.07
1380.50    0.526   129.87
1390.50    0.521   128.65
1400.50    0.516   127.41
1410.50    0.511   126.14
1420.50    0.505   124.85
1430.50    0.498   123.52
1440.50    0.490   122.15
1450.50    0.482   120.73
1460.50    0.473   119.27
1470.50    0.463   117.74
1480.50    0.453   116.15
1490.50    0.442   114.48
1500.50    0.430   112.73
1510.50    0.418   110.87
1520.50    0.406   108.90
1530.50    0.392   106.80
1540.50    0.379   104.56
1550.50    0.365   102.14
1560.50    0.351    99.53
1570.50    0.336    96.70
1580.50    0.322    93.61
1590.50    0.307    90.24
1600.50    0.293    86.54
1610.50    0.280    82.47
1620.50    0.267    78.00
1630.50    0.255    73.10
1640.50    0.245    67.74
1650.50    0.236    61.94
1660.50    0.228    55.73
1670.50    0.223    49.17
1680.50    0.221    42.38
1690.50    0.220    35.50
1700.50    0.223    28.68
1710.50    0.227    22.06
1720.50    0.234    15.77
1730.50    0.243     9.88
1740.50    0.253     4.43
1750.50    0.264   359.43
1760.50    0.277   354.87
1770.50    0.291   350.72
1780.50    0.304   346.95
1790.50    0.319   343.50
1800.50    0.333   340.36
1810.50    0.348   337.48
1820.50    0.362   334.82
1830.50    0.376   332.37
1840.50    0.390   330.09
1850.50    0.403   327.96
1860.50    0.416   325.97
1870.50    0.428   324.09
1880.50    0.440   322.31
1890.50    0.451   320.63
1900.50    0.461   319.02
1910.50    0.471   317.48
1920.50    0.480   316.01
1930.50    0.488   314.58
1940.50    0.496   313.20
1950.50    0.503   311.87
1960.50    0.510   310.57
1970.50    0.515   309.30
1980.50    0.521   308.05
1990.50    0.525   306.83
2000.50    0.529   305.63
2010.50    0.532   304.44
2020.50    0.534   303.27
2030.50    0.536   302.10
2040.50    0.538   300.94
2050.50    0.538   299.79
2060.50    0.539   298.64
2070.50    0.538   297.49
2080.50    0.537   296.33
2090.50    0.536   295.18
2100.50    0.534   294.01
2110.50    0.532   292.84
2120.50    0.529   291.65
2130.50    0.526   290.45
2140.50    0.523   289.24
2150.50    0.519   288.01
2160.50    0.514   286.75
2170.50    0.510   285.48
2180.50    0.505   284.18
2190.50    0.500   282.86
2200.50    0.494   281.51
2210.50    0.489   280.13
2220.50    0.483   278.71
2230.50    0.477   277.26
2240.50    0.471   275.78
2250.50    0.464   274.25
2260.50    0.458   272.68
2270.50    0.451   271.06
2280.50    0.445   269.40
2290.50    0.438   267.68
2300.50    0.431   265.92
2310.50    0.425   264.10
2320.50    0.418   262.22
2330.50    0.412   260.28
2340.50    0.406   258.28
2350.50    0.399   256.22
2360.50    0.393   254.09
2370.50    0.388   251.90
2380.50    0.382   249.65
2390.50    0.377   247.33
2400.50    0.372   244.95
2410.50    0.368   242.51
2420.50    0.363   240.01
2430.50    0.360   237.45
2440.50    0.356   234.85
2450.50    0.353   232.19
2460.50    0.351   229.50
2470.50    0.349   226.78
2480.50    0.348   224.02
2490.50    0.347   221.25
2500.50    0.347   218.48
2510.50    0.347   215.70
2520.50    0.348   212.93
2530.50    0.349   210.17
2540.50    0.351   207.44
2550.50    0.353   204.74
2560.50    0.356   202.08
2570.50    0.359   199.46
2580.50    0.363   196.89
2590.50    0.367   194.38
2600.50    0.371   191.92
2610.50    0.376   189.53
2620.50    0.381   187.20
2630.50    0.386   184.93
2640.50    0.392   182.73
2650.50    0.398   180.59
2660.50    0.404   178.51
2670.50    0.410   176.50
2680.50    0.417   174.55
2690.50    0.423   172.66
2700.50    0.430   170.82
2710.50    0.437   169.04
2720.50    0.443   167.32
2730.50    0.450   165.64
2740.50    0.456   164.02
2750.50    0.463   162.44
2760.50    0.469   160.90
2770.50    0.475   159.40
2780.50    0.482   157.94
2790.50    0.487   156.52
2800.50    0.493   155.13
2810.50    0.499   153.77
2820.50    0.504   152.44
2830.50    0.509   151.14






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 18:21:05



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