Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:17:35

Orbital Elements for I129AB
WDS: I129AB WDS ID/Discoverer
P: 1743.121 Orbital period (years)
a: 11.62162 Semi-major axis (arcseconds)
i: 99.648 Inclination (degrees)
Ω: 90.748 Longitude of ascending node (degrees)
T: 1763.602 Epoch of periastron passage (year)
e: 0.94298 Eccentricity
ω: 289.829 Longitude of periastron (degrees)
Start-Year: 1154.0 Year
End-Year: 2896.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I129AB
Position: 205626.63-591625.0 Epoch-2000 right ascension and declination
WDS-ID: 20564-5916 WDS designation
Discoverer Code: I129AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 198943 HD catalog number
Hipparcos number: 103361 Hipparcos catalog number
V1: 8.22 Magnitude of the primary
V2: 9.96 Magnitude of the secondary
Equinox: Equinox
Date: 2014 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for I129AB



WDS 6th Orbit including measures of I129AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of I129AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     2.767    332.7
-------------------------
1154.0     9.485    290.7
1164.0     9.501    290.5
1174.0     9.516    290.3
1184.0     9.528    290.2
1194.0     9.538    290.0
1204.0     9.547    289.8
1214.0     9.553    289.7
1224.0     9.557    289.5
1234.0     9.559    289.3
1244.0     9.559    289.1
1254.0     9.556    289.0
1264.0     9.551    288.8
1274.0     9.544    288.6
1284.0     9.534    288.5
1294.0     9.522    288.3
1304.0     9.507    288.1
1314.0     9.489    288.0
1324.0     9.469    287.8
1334.0     9.446    287.6
1344.0     9.420    287.4
1354.0     9.391    287.3
1364.0     9.359    287.1
1374.0     9.324    286.9
1384.0     9.285    286.7
1394.0     9.244    286.5
1404.0     9.199    286.4
1414.0     9.150    286.2
1424.0     9.097    286.0
1434.0     9.041    285.8
1444.0     8.981    285.6
1454.0     8.916    285.4
1464.0     8.848    285.2
1474.0     8.774    285.0
1484.0     8.696    284.8
1494.0     8.613    284.6
1504.0     8.525    284.4
1514.0     8.431    284.2
1524.0     8.332    283.9
1534.0     8.226    283.7
1544.0     8.114    283.5
1554.0     7.994    283.2
1564.0     7.868    283.0
1574.0     7.734    282.7
1584.0     7.591    282.5
1594.0     7.439    282.2
1604.0     7.277    281.9
1614.0     7.104    281.6
1624.0     6.919    281.3
1634.0     6.721    281.0
1644.0     6.508    280.6
1654.0     6.278    280.2
1664.0     6.030    279.8
1674.0     5.760    279.4
1684.0     5.464    278.9
1694.0     5.137    278.3
1704.0     4.773    277.7
1714.0     4.360    276.9
1724.0     3.883    276.0
1734.0     3.313    274.8
1744.0     2.593    273.0
1754.0     1.571    269.3
1764.0     0.330    108.1
1774.0     1.398     84.3
1784.0     1.652     77.7
1794.0     1.736     72.4
1804.0     1.757     67.3
1814.0     1.751     62.2
1824.0     1.733     57.1
1834.0     1.712     51.9
1844.0     1.693     46.5
1854.0     1.680     41.0
1864.0     1.674     35.5
1874.0     1.679     29.9
1884.0     1.693     24.5
1894.0     1.719     19.1
1904.0     1.755     13.9
1914.0     1.802      9.0
1924.0     1.858      4.4
1934.0     1.923      0.0
1944.0     1.995    355.9
1954.0     2.075    352.2
1964.0     2.160    348.7
1974.0     2.251    345.5
1984.0     2.346    342.6
1994.0     2.444    339.8
2004.0     2.546    337.3
2014.0     2.650    335.0
2024.0     2.756    332.9
2034.0     2.865    330.9
2044.0     2.974    329.1
2054.0     3.085    327.4
2064.0     3.196    325.8
2074.0     3.308    324.4
2084.0     3.420    323.0
2094.0     3.533    321.7
2104.0     3.645    320.5
2114.0     3.758    319.4
2124.0     3.871    318.3
2134.0     3.983    317.3
2144.0     4.095    316.3
2154.0     4.206    315.4
2164.0     4.317    314.6
2174.0     4.427    313.8
2184.0     4.537    313.0
2194.0     4.646    312.2
2204.0     4.754    311.5
2214.0     4.862    310.9
2224.0     4.968    310.2
2234.0     5.074    309.6
2244.0     5.179    309.0
2254.0     5.284    308.4
2264.0     5.387    307.9
2274.0     5.489    307.4
2284.0     5.591    306.9
2294.0     5.691    306.4
2304.0     5.791    305.9
2314.0     5.889    305.4
2324.0     5.986    305.0
2334.0     6.083    304.6
2344.0     6.178    304.2
2354.0     6.273    303.8
2364.0     6.366    303.4
2374.0     6.458    303.0
2384.0     6.549    302.6
2394.0     6.639    302.3
2404.0     6.728    301.9
2414.0     6.815    301.6
2424.0     6.902    301.2
2434.0     6.987    300.9
2444.0     7.072    300.6
2454.0     7.155    300.3
2464.0     7.237    300.0
2474.0     7.318    299.7
2484.0     7.397    299.4
2494.0     7.475    299.1
2504.0     7.552    298.9
2514.0     7.628    298.6
2524.0     7.703    298.3
2534.0     7.776    298.1
2544.0     7.849    297.8
2554.0     7.919    297.6
2564.0     7.989    297.3
2574.0     8.057    297.1
2584.0     8.124    296.8
2594.0     8.190    296.6
2604.0     8.255    296.4
2614.0     8.318    296.1
2624.0     8.379    295.9
2634.0     8.440    295.7
2644.0     8.499    295.5
2654.0     8.556    295.3
2664.0     8.612    295.1
2674.0     8.667    294.9
2684.0     8.720    294.6
2694.0     8.772    294.4
2704.0     8.823    294.2
2714.0     8.872    294.0
2724.0     8.919    293.8
2734.0     8.965    293.7
2744.0     9.010    293.5
2754.0     9.053    293.3
2764.0     9.094    293.1
2774.0     9.134    292.9
2784.0     9.172    292.7
2794.0     9.208    292.5
2804.0     9.243    292.3
2814.0     9.276    292.2
2824.0     9.308    292.0
2834.0     9.338    291.8
2844.0     9.366    291.6
2854.0     9.392    291.4
2864.0     9.417    291.3
2874.0     9.439    291.1
2884.0     9.460    290.9
2894.0     9.479    290.7






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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