Double Star Calculator - Orbit

Orbital Elements for A1109AB

WDS:	A1109AB	WDS ID/Discoverer
P:	1407.620	Orbital period (years)
a:	2.823	Semi-major axis (arcseconds)
i:	52.5	Inclination (degrees)
Ω:	221.34	Longitude of ascending node (degrees)
T:	3298.000	Epoch of periastron passage (year)
e:	0.8475	Eccentricity
ω:	98.6	Longitude of periastron (degrees)
Start-Year:	1321.19	Year
End-Year:	2728.81	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1109AB
Position:	144247.60+063526.4	Epoch-2000 right ascension and declination
WDS-ID:	14428+0635	WDS designation
Discoverer Code:	A1109AB	Discover designation and components
ADS number:	9353	Aitken Double Star catalog
HD number:	129517	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	7.44	Magnitude of the primary
V2:	9.44	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2005	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	WSI2006b	Reference

Double Star Orbit for A1109AB

WDS 6th Orbit including measures of A1109AB

-- 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 A1109AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.797    90.96
--------------------------
1321.19    3.249   153.68
1331.19    3.245   154.30
1341.19    3.240   154.93
1351.19    3.235   155.56
1361.19    3.228   156.19
1371.19    3.221   156.82
1381.19    3.214   157.46
1391.19    3.205   158.10
1401.19    3.196   158.74
1411.19    3.186   159.39
1421.19    3.175   160.04
1431.19    3.163   160.69
1441.19    3.150   161.35
1451.19    3.137   162.02
1461.19    3.122   162.69
1471.19    3.107   163.37
1481.19    3.090   164.06
1491.19    3.073   164.75
1501.19    3.055   165.45
1511.19    3.035   166.16
1521.19    3.015   166.88
1531.19    2.993   167.61
1541.19    2.970   168.35
1551.19    2.946   169.10
1561.19    2.921   169.87
1571.19    2.895   170.65
1581.19    2.867   171.44
1591.19    2.838   172.25
1601.19    2.807   173.08
1611.19    2.775   173.92
1621.19    2.741   174.79
1631.19    2.706   175.68
1641.19    2.669   176.59
1651.19    2.630   177.53
1661.19    2.589   178.50
1671.19    2.546   179.49
1681.19    2.501   180.53
1691.19    2.454   181.60
1701.19    2.404   182.72
1711.19    2.351   183.88
1721.19    2.296   185.10
1731.19    2.237   186.38
1741.19    2.176   187.74
1751.19    2.110   189.17
1761.19    2.040   190.70
1771.19    1.965   192.34
1781.19    1.885   194.12
1791.19    1.799   196.06
1801.19    1.707   198.20
1811.19    1.605   200.60
1821.19    1.494   203.35
1831.19    1.371   206.56
1841.19    1.233   210.44
1851.19    1.074   215.40
1861.19    0.888   222.27
1871.19    0.664   233.34
1881.19    0.400   257.98
1891.19    0.274   332.60
1901.19    0.497    24.10
1911.19    0.720    42.25
1921.19    0.893    52.41
1931.19    1.032    59.52
1941.19    1.150    65.05
1951.19    1.253    69.61
1961.19    1.345    73.52
1971.19    1.428    76.94
1981.19    1.505    80.01
1991.19    1.576    82.78
2001.19    1.643    85.32
2011.19    1.706    87.67
2021.19    1.766    89.85
2031.19    1.823    91.90
2041.19    1.878    93.82
2051.19    1.930    95.64
2061.19    1.980    97.36
2071.19    2.028    99.00
2081.19    2.075   100.57
2091.19    2.119   102.07
2101.19    2.163   103.50
2111.19    2.205   104.88
2121.19    2.245   106.21
2131.19    2.285   107.50
2141.19    2.323   108.74
2151.19    2.360   109.94
2161.19    2.396   111.10
2171.19    2.431   112.23
2181.19    2.465   113.33
2191.19    2.499   114.40
2201.19    2.531   115.44
2211.19    2.562   116.46
2221.19    2.593   117.45
2231.19    2.622   118.42
2241.19    2.651   119.37
2251.19    2.679   120.29
2261.19    2.707   121.20
2271.19    2.733   122.09
2281.19    2.759   122.96
2291.19    2.784   123.82
2301.19    2.808   124.66
2311.19    2.832   125.49
2321.19    2.855   126.31
2331.19    2.877   127.11
2341.19    2.899   127.90
2351.19    2.920   128.68
2361.19    2.940   129.44
2371.19    2.959   130.20
2381.19    2.978   130.95
2391.19    2.997   131.69
2401.19    3.015   132.41
2411.19    3.032   133.14
2421.19    3.048   133.85
2431.19    3.064   134.55
2441.19    3.079   135.25
2451.19    3.094   135.94
2461.19    3.108   136.63
2471.19    3.121   137.31
2481.19    3.134   137.98
2491.19    3.146   138.65
2501.19    3.157   139.31
2511.19    3.168   139.97
2521.19    3.178   140.62
2531.19    3.188   141.27
2541.19    3.197   141.92
2551.19    3.206   142.56
2561.19    3.213   143.20
2571.19    3.221   143.84
2581.19    3.227   144.47
2591.19    3.233   145.10
2601.19    3.238   145.73
2611.19    3.243   146.36
2621.19    3.247   146.98
2631.19    3.250   147.61
2641.19    3.253   148.23
2651.19    3.255   148.85
2661.19    3.257   149.47
2671.19    3.257   150.09
2681.19    3.258   150.72
2691.19    3.257   151.34
2701.19    3.256   151.96
2711.19    3.254   152.58
2721.19    3.251   153.20

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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 17:08:10