Double Star Calculator - Orbit

Orbital Elements for STF1389
WDS: STF1389 WDS ID/Discoverer
P: 1454.000 Orbital period (years)
a: 2.773 Semi-major axis (arcseconds)
i: 122.7 Inclination (degrees)
Ω: 80.9 Longitude of ascending node (degrees)
T: 2420.070 Epoch of periastron passage (year)
e: 0.307 Eccentricity
ω: 265.1 Longitude of periastron (degrees)
Start-Year: 1298.0 Year
End-Year: 2752.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1389
Position: 095226.17+265853.8 Epoch-2000 right ascension and declination
WDS-ID: 09524+2659 WDS designation
Discoverer Code: STF1389 Discover designation and components
ADS number: 7551 Aitken Double Star catalog
HD number: 85441 HD catalog number
Hipparcos number: 48429 Hipparcos catalog number
V1: 9.12 Magnitude of the primary
V2: 9.50 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 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: Lin2016a Reference

Double Star Orbit for STF1389



WDS 6th Orbit including measures of STF1389

-- 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 STF1389
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.528   288.38
--------------------------
1298.00    2.768    68.69
1308.00    2.771    67.42
1318.00    2.771    66.14
1328.00    2.769    64.87
1338.00    2.764    63.59
1348.00    2.757    62.30
1358.00    2.747    61.01
1368.00    2.734    59.71
1378.00    2.720    58.39
1388.00    2.704    57.06
1398.00    2.686    55.71
1408.00    2.666    54.35
1418.00    2.645    52.96
1428.00    2.622    51.55
1438.00    2.598    50.11
1448.00    2.573    48.65
1458.00    2.547    47.15
1468.00    2.520    45.63
1478.00    2.492    44.07
1488.00    2.464    42.48
1498.00    2.435    40.84
1508.00    2.406    39.17
1518.00    2.376    37.46
1528.00    2.347    35.71
1538.00    2.317    33.91
1548.00    2.288    32.06
1558.00    2.259    30.17
1568.00    2.231    28.22
1578.00    2.203    26.23
1588.00    2.176    24.19
1598.00    2.150    22.10
1608.00    2.125    19.96
1618.00    2.102    17.77
1628.00    2.079    15.53
1638.00    2.059    13.24
1648.00    2.039    10.91
1658.00    2.022     8.53
1668.00    2.006     6.12
1678.00    1.992     3.67
1688.00    1.980     1.19
1698.00    1.971   358.68
1708.00    1.963   356.15
1718.00    1.958   353.60
1728.00    1.955   351.04
1738.00    1.954   348.48
1748.00    1.956   345.92
1758.00    1.959   343.36
1768.00    1.965   340.82
1778.00    1.973   338.30
1788.00    1.984   335.79
1798.00    1.996   333.32
1808.00    2.010   330.88
1818.00    2.026   328.48
1828.00    2.044   326.11
1838.00    2.063   323.79
1848.00    2.084   321.51
1858.00    2.106   319.28
1868.00    2.129   317.10
1878.00    2.153   314.96
1888.00    2.178   312.88
1898.00    2.204   310.84
1908.00    2.230   308.84
1918.00    2.257   306.90
1928.00    2.284   305.00
1938.00    2.311   303.15
1948.00    2.338   301.34
1958.00    2.365   299.57
1968.00    2.391   297.83
1978.00    2.417   296.14
1988.00    2.442   294.48
1998.00    2.466   292.86
2008.00    2.489   291.26
2018.00    2.511   289.69
2028.00    2.531   288.15
2038.00    2.550   286.64
2048.00    2.567   285.14
2058.00    2.582   283.67
2068.00    2.595   282.20
2078.00    2.606   280.76
2088.00    2.615   279.32
2098.00    2.621   277.89
2108.00    2.624   276.47
2118.00    2.624   275.05
2128.00    2.622   273.63
2138.00    2.615   272.20
2148.00    2.606   270.76
2158.00    2.593   269.31
2168.00    2.576   267.85
2178.00    2.555   266.36
2188.00    2.530   264.85
2198.00    2.500   263.30
2208.00    2.466   261.71
2218.00    2.428   260.08
2228.00    2.384   258.39
2238.00    2.336   256.63
2248.00    2.284   254.80
2258.00    2.226   252.87
2268.00    2.163   250.84
2278.00    2.096   248.68
2288.00    2.024   246.38
2298.00    1.948   243.89
2308.00    1.867   241.20
2318.00    1.784   238.26
2328.00    1.697   235.03
2338.00    1.609   231.45
2348.00    1.520   227.45
2358.00    1.432   222.95
2368.00    1.347   217.88
2378.00    1.266   212.13
2388.00    1.194   205.65
2398.00    1.131   198.39
2408.00    1.083   190.38
2418.00    1.052   181.76
2428.00    1.039   172.77
2438.00    1.047   163.74
2448.00    1.074   155.01
2458.00    1.119   146.84
2468.00    1.178   139.40
2478.00    1.249   132.74
2488.00    1.329   126.84
2498.00    1.415   121.64
2508.00    1.504   117.03
2518.00    1.594   112.95
2528.00    1.685   109.30
2538.00    1.774   106.03
2548.00    1.862   103.07
2558.00    1.946   100.36
2568.00    2.027    97.88
2578.00    2.105    95.59
2588.00    2.178    93.45
2598.00    2.247    91.46
2608.00    2.311    89.57
2618.00    2.371    87.79
2628.00    2.427    86.09
2638.00    2.478    84.46
2648.00    2.524    82.89
2658.00    2.566    81.38
2668.00    2.604    79.92
2678.00    2.638    78.49
2688.00    2.667    77.10
2698.00    2.693    75.74
2708.00    2.714    74.40
2718.00    2.732    73.08
2728.00    2.747    71.78
2738.00    2.758    70.49
2748.00    2.765    69.20






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 16:21:55



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