Double Star Calculator - Orbit

Orbital Elements for STF2199
WDS: STF2199 WDS ID/Discoverer
P: 1126.001 Orbital period (years)
a: 2.89677 Semi-major axis (arcseconds)
i: 120.38 Inclination (degrees)
Ω: 148.322 Longitude of ascending node (degrees)
T: 1742.024 Epoch of periastron passage (year)
e: 0.71716 Eccentricity
ω: 297.078 Longitude of periastron (degrees)
Start-Year: 1461.99965 Year
End-Year: 2588.0003500000003 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2199
Position: 173838.32+554534.9 Epoch-2000 right ascension and declination
WDS-ID: 17386+5546 WDS designation
Discoverer Code: STF2199 Discover designation and components
ADS number: 10699 Aitken Double Star catalog
HD number: 160780 HD catalog number
Hipparcos number: 86344 Hipparcos catalog number
V1: 8.03 Magnitude of the primary
V2: 8.60 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 STF2199



WDS 6th Orbit including measures of STF2199

-- 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 STF2199
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.072    52.24
--------------------------
1462.00    3.419   350.18
1472.00    3.393   349.37
1482.00    3.365   348.54
1492.00    3.332   347.69
1502.00    3.296   346.83
1512.00    3.256   345.95
1522.00    3.212   345.05
1532.00    3.164   344.12
1542.00    3.110   343.16
1552.00    3.052   342.16
1562.00    2.988   341.13
1572.00    2.918   340.04
1582.00    2.841   338.90
1592.00    2.758   337.70
1602.00    2.667   336.41
1612.00    2.568   335.03
1622.00    2.459   333.53
1632.00    2.340   331.89
1642.00    2.210   330.06
1652.00    2.067   328.00
1662.00    1.909   325.60
1672.00    1.734   322.75
1682.00    1.541   319.22
1692.00    1.326   314.60
1702.00    1.089   308.07
1712.00    0.834   297.68
1722.00    0.584   278.08
1732.00    0.434   238.27
1742.00    0.524   193.09
1752.00    0.740   168.49
1762.00    0.943   155.05
1772.00    1.101   146.01
1782.00    1.218   139.00
1792.00    1.304   133.06
1802.00    1.368   127.78
1812.00    1.418   122.91
1822.00    1.457   118.34
1832.00    1.489   113.98
1842.00    1.516   109.79
1852.00    1.541   105.74
1862.00    1.564   101.82
1872.00    1.586    98.01
1882.00    1.609    94.30
1892.00    1.632    90.70
1902.00    1.656    87.20
1912.00    1.681    83.80
1922.00    1.708    80.51
1932.00    1.737    77.32
1942.00    1.766    74.24
1952.00    1.798    71.26
1962.00    1.831    68.39
1972.00    1.865    65.62
1982.00    1.900    62.95
1992.00    1.937    60.38
2002.00    1.975    57.91
2012.00    2.014    55.53
2022.00    2.054    53.24
2032.00    2.095    51.05
2042.00    2.136    48.93
2052.00    2.178    46.90
2062.00    2.220    44.94
2072.00    2.263    43.06
2082.00    2.306    41.25
2092.00    2.350    39.51
2102.00    2.393    37.82
2112.00    2.436    36.20
2122.00    2.480    34.64
2132.00    2.523    33.13
2142.00    2.566    31.66
2152.00    2.608    30.25
2162.00    2.651    28.88
2172.00    2.693    27.56
2182.00    2.734    26.28
2192.00    2.775    25.03
2202.00    2.815    23.82
2212.00    2.855    22.64
2222.00    2.894    21.50
2232.00    2.932    20.38
2242.00    2.970    19.30
2252.00    3.006    18.24
2262.00    3.042    17.21
2272.00    3.077    16.20
2282.00    3.111    15.21
2292.00    3.144    14.24
2302.00    3.176    13.29
2312.00    3.206    12.37
2322.00    3.236    11.45
2332.00    3.264    10.56
2342.00    3.291     9.68
2352.00    3.317     8.81
2362.00    3.342     7.96
2372.00    3.365     7.12
2382.00    3.386     6.29
2392.00    3.407     5.47
2402.00    3.425     4.66
2412.00    3.443     3.86
2422.00    3.458     3.06
2432.00    3.472     2.28
2442.00    3.484     1.49
2452.00    3.495     0.72
2462.00    3.503   359.95
2472.00    3.510   359.18
2482.00    3.514   358.41
2492.00    3.517   357.65
2502.00    3.517   356.88
2512.00    3.515   356.12
2522.00    3.511   355.35
2532.00    3.505   354.58
2542.00    3.496   353.81
2552.00    3.484   353.03
2562.00    3.470   352.25
2572.00    3.452   351.46
2582.00    3.432   350.66






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 17:41:23



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