Double Star Calculator - Orbit

Orbital Elements for STF1890
WDS: STF1890 WDS ID/Discoverer
P: 2114.197 Orbital period (years)
a: 7.82331 Semi-major axis (arcseconds)
i: 88.792 Inclination (degrees)
Ω: 41.364 Longitude of ascending node (degrees)
T: 1596.886 Epoch of periastron passage (year)
e: 0.74956 Eccentricity
ω: 283.955 Longitude of periastron (degrees)
Start-Year: 967.90175 Year
End-Year: 3082.09825 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1890
Position: 144941.37+484315.6 Epoch-2000 right ascension and declination
WDS-ID: 14497+4843 WDS designation
Discoverer Code: STF1890 Discover designation and components
ADS number: 9406 Aitken Double Star catalog
HD number: 131041 HD catalog number
Hipparcos number: 72524 Hipparcos catalog number
V1: 6.31 Magnitude of the primary
V2: 6.67 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 STF1890



WDS 6th Orbit including measures of STF1890

-- 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 STF1890
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.499    46.10
--------------------------
967.90    6.242   219.36
977.90    6.286   219.40
987.90    6.329   219.43
997.90    6.370   219.47
1007.90    6.410   219.51
1017.90    6.448   219.54
1027.90    6.484   219.58
1037.90    6.519   219.61
1047.90    6.552   219.64
1057.90    6.583   219.68
1067.90    6.612   219.71
1077.90    6.639   219.74
1087.90    6.664   219.78
1097.90    6.686   219.81
1107.90    6.707   219.84
1117.90    6.725   219.87
1127.90    6.741   219.91
1137.90    6.755   219.94
1147.90    6.766   219.97
1157.90    6.775   220.00
1167.90    6.781   220.03
1177.90    6.784   220.07
1187.90    6.784   220.10
1197.90    6.781   220.13
1207.90    6.775   220.16
1217.90    6.765   220.19
1227.90    6.753   220.22
1237.90    6.736   220.26
1247.90    6.716   220.29
1257.90    6.692   220.32
1267.90    6.664   220.35
1277.90    6.632   220.39
1287.90    6.595   220.42
1297.90    6.554   220.45
1307.90    6.507   220.49
1317.90    6.455   220.52
1327.90    6.398   220.56
1337.90    6.334   220.59
1347.90    6.265   220.63
1357.90    6.188   220.67
1367.90    6.104   220.71
1377.90    6.013   220.74
1387.90    5.914   220.79
1397.90    5.805   220.83
1407.90    5.687   220.87
1417.90    5.559   220.92
1427.90    5.419   220.97
1437.90    5.267   221.02
1447.90    5.101   221.07
1457.90    4.920   221.13
1467.90    4.723   221.19
1477.90    4.508   221.26
1487.90    4.272   221.34
1497.90    4.012   221.42
1507.90    3.727   221.52
1517.90    3.411   221.63
1527.90    3.062   221.77
1537.90    2.675   221.95
1547.90    2.244   222.19
1557.90    1.766   222.55
1567.90    1.241   223.22
1577.90    0.671   224.95
1587.90    0.082   252.35
1597.90    0.534    37.10
1607.90    1.107    39.53
1617.90    1.624    40.34
1627.90    2.070    40.77
1637.90    2.447    41.05
1647.90    2.760    41.27
1657.90    3.017    41.44
1667.90    3.228    41.59
1677.90    3.401    41.72
1687.90    3.541    41.84
1697.90    3.655    41.96
1707.90    3.745    42.06
1717.90    3.815    42.16
1727.90    3.869    42.26
1737.90    3.908    42.36
1747.90    3.935    42.45
1757.90    3.950    42.55
1767.90    3.955    42.64
1777.90    3.951    42.73
1787.90    3.940    42.83
1797.90    3.921    42.92
1807.90    3.897    43.01
1817.90    3.866    43.11
1827.90    3.830    43.21
1837.90    3.790    43.31
1847.90    3.745    43.41
1857.90    3.696    43.52
1867.90    3.644    43.63
1877.90    3.588    43.74
1887.90    3.529    43.85
1897.90    3.468    43.97
1907.90    3.403    44.09
1917.90    3.337    44.22
1927.90    3.268    44.35
1937.90    3.197    44.49
1947.90    3.124    44.64
1957.90    3.050    44.79
1967.90    2.973    44.95
1977.90    2.896    45.12
1987.90    2.816    45.30
1997.90    2.736    45.49
2007.90    2.654    45.69
2017.90    2.571    45.90
2027.90    2.487    46.13
2037.90    2.402    46.37
2047.90    2.316    46.63
2057.90    2.230    46.92
2067.90    2.142    47.22
2077.90    2.054    47.55
2087.90    1.965    47.91
2097.90    1.876    48.31
2107.90    1.786    48.74
2117.90    1.696    49.22
2127.90    1.605    49.75
2137.90    1.514    50.35
2147.90    1.423    51.03
2157.90    1.331    51.79
2167.90    1.240    52.68
2177.90    1.148    53.70
2187.90    1.057    54.89
2197.90    0.966    56.32
2207.90    0.875    58.04
2217.90    0.785    60.16
2227.90    0.696    62.82
2237.90    0.609    66.25
2247.90    0.525    70.79
2257.90    0.445    77.02
2267.90    0.373    85.81
2277.90    0.313    98.36
2287.90    0.274   115.53
2297.90    0.266   135.85
2307.90    0.291   154.97
2317.90    0.342   169.75
2327.90    0.409   180.21
2337.90    0.486   187.55
2347.90    0.568   192.83
2357.90    0.654   196.75
2367.90    0.742   199.74
2377.90    0.831   202.10
2387.90    0.922   204.00
2397.90    1.013   205.56
2407.90    1.105   206.86
2417.90    1.197   207.96
2427.90    1.289   208.90
2437.90    1.381   209.72
2447.90    1.473   210.43
2457.90    1.565   211.06
2467.90    1.657   211.63
2477.90    1.748   212.13
2487.90    1.840   212.58
2497.90    1.931   212.99
2507.90    2.023   213.36
2517.90    2.113   213.70
2527.90    2.204   214.01
2537.90    2.294   214.30
2547.90    2.384   214.57
2557.90    2.474   214.81
2567.90    2.563   215.04
2577.90    2.652   215.26
2587.90    2.740   215.46
2597.90    2.828   215.64
2607.90    2.916   215.82
2617.90    3.003   215.99
2627.90    3.089   216.14
2637.90    3.175   216.29
2647.90    3.261   216.43
2657.90    3.346   216.57
2667.90    3.431   216.69
2677.90    3.515   216.81
2687.90    3.598   216.93
2697.90    3.681   217.04
2707.90    3.763   217.14
2717.90    3.845   217.24
2727.90    3.926   217.34
2737.90    4.006   217.43
2747.90    4.086   217.52
2757.90    4.165   217.61
2767.90    4.243   217.69
2777.90    4.321   217.77
2787.90    4.398   217.85
2797.90    4.474   217.92
2807.90    4.549   217.99
2817.90    4.624   218.06
2827.90    4.698   218.13
2837.90    4.771   218.19
2847.90    4.843   218.25
2857.90    4.914   218.32
2867.90    4.985   218.37
2877.90    5.054   218.43
2887.90    5.123   218.49
2897.90    5.191   218.54
2907.90    5.258   218.60
2917.90    5.323   218.65
2927.90    5.388   218.70
2937.90    5.452   218.75
2947.90    5.515   218.80
2957.90    5.576   218.84
2967.90    5.637   218.89
2977.90    5.696   218.94
2987.90    5.755   218.98
2997.90    5.812   219.02
3007.90    5.868   219.07
3017.90    5.922   219.11
3027.90    5.976   219.15
3037.90    6.028   219.19
3047.90    6.079   219.23
3057.90    6.128   219.27
3067.90    6.176   219.31
3077.90    6.223   219.34






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 17:09:12



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