Double Star Calculator - Orbit

Orbital Elements for I422AB
WDS: I422AB WDS ID/Discoverer
P: 1715.800 Orbital period (years)
a: 1.316 Semi-major axis (arcseconds)
i: 81.9 Inclination (degrees)
Ω: 234.8 Longitude of ascending node (degrees)
T: 909.200 Epoch of periastron passage (year)
e: 0.73 Eccentricity
ω: 73.8 Longitude of periastron (degrees)
Start-Year: 1167.1 Year
End-Year: 2882.9 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I422AB
Position: 113820.37-632221.9 Epoch-2000 right ascension and declination
WDS-ID: 11383-6322 WDS designation
Discoverer Code: I422AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 101205 HD catalog number
Hipparcos number: 56769 Hipparcos catalog number
V1: 7.10 Magnitude of the primary
V2: 7.42 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Zas2009 Reference

Double Star Orbit for I422AB



WDS 6th Orbit including measures of I422AB

-- 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 I422AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.322   123.12
--------------------------
1167.10    1.169    60.32
1177.10    1.179    60.58
1187.10    1.187    60.83
1197.10    1.194    61.07
1207.10    1.201    61.32
1217.10    1.206    61.56
1227.10    1.210    61.80
1237.10    1.213    62.04
1247.10    1.216    62.28
1257.10    1.217    62.51
1267.10    1.218    62.75
1277.10    1.218    62.98
1287.10    1.218    63.22
1297.10    1.217    63.46
1307.10    1.215    63.69
1317.10    1.212    63.93
1327.10    1.209    64.17
1337.10    1.205    64.41
1347.10    1.201    64.65
1357.10    1.196    64.89
1367.10    1.191    65.14
1377.10    1.185    65.39
1387.10    1.179    65.64
1397.10    1.172    65.89
1407.10    1.165    66.15
1417.10    1.157    66.41
1427.10    1.149    66.67
1437.10    1.141    66.94
1447.10    1.132    67.21
1457.10    1.123    67.48
1467.10    1.113    67.76
1477.10    1.103    68.05
1487.10    1.093    68.34
1497.10    1.083    68.63
1507.10    1.072    68.94
1517.10    1.061    69.24
1527.10    1.049    69.56
1537.10    1.037    69.88
1547.10    1.025    70.21
1557.10    1.013    70.54
1567.10    1.000    70.89
1577.10    0.987    71.24
1587.10    0.974    71.61
1597.10    0.961    71.98
1607.10    0.947    72.37
1617.10    0.934    72.76
1627.10    0.920    73.17
1637.10    0.905    73.59
1647.10    0.891    74.02
1657.10    0.876    74.47
1667.10    0.862    74.94
1677.10    0.847    75.41
1687.10    0.832    75.91
1697.10    0.816    76.43
1707.10    0.801    76.96
1717.10    0.785    77.52
1727.10    0.770    78.10
1737.10    0.754    78.70
1747.10    0.738    79.33
1757.10    0.722    79.99
1767.10    0.706    80.67
1777.10    0.690    81.39
1787.10    0.674    82.14
1797.10    0.657    82.93
1807.10    0.641    83.77
1817.10    0.625    84.64
1827.10    0.608    85.56
1837.10    0.592    86.53
1847.10    0.576    87.56
1857.10    0.559    88.65
1867.10    0.543    89.80
1877.10    0.527    91.02
1887.10    0.511    92.32
1897.10    0.495    93.70
1907.10    0.479    95.18
1917.10    0.464    96.75
1927.10    0.449    98.43
1937.10    0.434   100.23
1947.10    0.419   102.16
1957.10    0.405   104.22
1967.10    0.391   106.43
1977.10    0.378   108.80
1987.10    0.365   111.33
1997.10    0.353   114.05
2007.10    0.342   116.95
2017.10    0.331   120.04
2027.10    0.322   123.32
2037.10    0.313   126.80
2047.10    0.306   130.45
2057.10    0.300   134.27
2067.10    0.295   138.24
2077.10    0.291   142.32
2087.10    0.289   146.48
2097.10    0.288   150.68
2107.10    0.289   154.89
2117.10    0.291   159.05
2127.10    0.295   163.13
2137.10    0.300   167.10
2147.10    0.306   170.92
2157.10    0.313   174.57
2167.10    0.322   178.05
2177.10    0.331   181.34
2187.10    0.341   184.44
2197.10    0.352   187.35
2207.10    0.364   190.08
2217.10    0.376   192.63
2227.10    0.389   195.02
2237.10    0.403   197.25
2247.10    0.416   199.34
2257.10    0.430   201.29
2267.10    0.444   203.12
2277.10    0.459   204.84
2287.10    0.473   206.45
2297.10    0.487   207.97
2307.10    0.502   209.40
2317.10    0.516   210.76
2327.10    0.530   212.03
2337.10    0.544   213.25
2347.10    0.558   214.40
2357.10    0.571   215.50
2367.10    0.584   216.55
2377.10    0.597   217.55
2387.10    0.609   218.52
2397.10    0.620   219.44
2407.10    0.631   220.34
2417.10    0.641   221.20
2427.10    0.650   222.04
2437.10    0.658   222.86
2447.10    0.665   223.66
2457.10    0.670   224.45
2467.10    0.674   225.22
2477.10    0.677   225.99
2487.10    0.677   226.75
2497.10    0.675   227.51
2507.10    0.671   228.29
2517.10    0.663   229.07
2527.10    0.651   229.88
2537.10    0.635   230.73
2547.10    0.614   231.62
2557.10    0.587   232.59
2567.10    0.551   233.67
2577.10    0.506   234.92
2587.10    0.450   236.45
2597.10    0.379   238.49
2607.10    0.294   241.61
2617.10    0.194   247.71
2627.10    0.089   268.18
2637.10    0.068     6.07
2647.10    0.170    37.42
2657.10    0.276    44.86
2667.10    0.373    48.24
2677.10    0.461    50.27
2687.10    0.540    51.67
2697.10    0.610    52.73
2707.10    0.673    53.58
2717.10    0.730    54.29
2727.10    0.781    54.91
2737.10    0.827    55.45
2747.10    0.869    55.94
2757.10    0.907    56.38
2767.10    0.941    56.79
2777.10    0.973    57.17
2787.10    1.001    57.53
2797.10    1.027    57.87
2807.10    1.050    58.19
2817.10    1.072    58.51
2827.10    1.091    58.80
2837.10    1.109    59.09
2847.10    1.125    59.37
2857.10    1.139    59.65
2867.10    1.152    59.91
2877.10    1.163    60.17






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 16:40:17



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