Double Star Calculator - Orbit

Orbital Elements for I365AB
WDS: I365AB WDS ID/Discoverer
P: 35.000 Orbital period (years)
a: 0.45 Semi-major axis (arcseconds)
i: 117.0 Inclination (degrees)
Ω: 71.0 Longitude of ascending node (degrees)
T: 1967.500 Epoch of periastron passage (year)
e: 0.78 Eccentricity
ω: 94.0 Longitude of periastron (degrees)
Start-Year: 2007.5 Year
End-Year: 2042.5 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for I365AB
Position: 133712.20-614131.7 Epoch-2000 right ascension and declination
WDS-ID: 13372-6142 WDS designation
Discoverer Code: I365AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 118261 HD catalog number
Hipparcos number: 66438 Hipparcos catalog number
V1: 5.98 Magnitude of the primary
V2: 7.22 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Sod1999 Reference

Double Star Orbit for I365AB



WDS 6th Orbit including measures of I365AB

-- 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 I365AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.385   125.20
--------------------------
2007.50    0.315   214.14
2007.60    0.316   213.55
2007.70    0.317   212.95
2007.80    0.318   212.37
2007.90    0.319   211.78
2008.00    0.320   211.21
2008.10    0.321   210.63
2008.20    0.322   210.06
2008.30    0.323   209.49
2008.40    0.324   208.92
2008.50    0.325   208.36
2008.60    0.326   207.80
2008.70    0.326   207.24
2008.80    0.327   206.69
2008.90    0.328   206.14
2009.00    0.329   205.59
2009.10    0.329   205.04
2009.20    0.330   204.50
2009.30    0.331   203.96
2009.40    0.331   203.42
2009.50    0.332   202.88
2009.60    0.333   202.34
2009.70    0.333   201.81
2009.80    0.334   201.28
2009.90    0.334   200.74
2010.00    0.335   200.22
2010.10    0.335   199.69
2010.20    0.336   199.16
2010.30    0.336   198.64
2010.40    0.337   198.12
2010.50    0.337   197.59
2010.60    0.338   197.08
2010.70    0.338   196.56
2010.80    0.338   196.04
2010.90    0.339   195.52
2011.00    0.339   195.01
2011.10    0.340   194.50
2011.20    0.340   193.98
2011.30    0.340   193.47
2011.40    0.341   192.96
2011.50    0.341   192.45
2011.60    0.342   191.95
2011.70    0.342   191.44
2011.80    0.342   190.93
2011.90    0.343   190.43
2012.00    0.343   189.93
2012.10    0.343   189.42
2012.20    0.344   188.92
2012.30    0.344   188.42
2012.40    0.344   187.92
2012.50    0.345   187.42
2012.60    0.345   186.92
2012.70    0.345   186.43
2012.80    0.345   185.93
2012.90    0.346   185.43
2013.00    0.346   184.94
2013.10    0.346   184.45
2013.20    0.347   183.95
2013.30    0.347   183.46
2013.40    0.347   182.97
2013.50    0.347   182.48
2013.60    0.348   181.99
2013.70    0.348   181.50
2013.80    0.348   181.01
2013.90    0.349   180.52
2014.00    0.349   180.04
2014.10    0.349   179.55
2014.20    0.349   179.07
2014.30    0.350   178.58
2014.40    0.350   178.10
2014.50    0.350   177.62
2014.60    0.350   177.13
2014.70    0.351   176.65
2014.80    0.351   176.17
2014.90    0.351   175.69
2015.00    0.352   175.21
2015.10    0.352   174.73
2015.20    0.352   174.26
2015.30    0.352   173.78
2015.40    0.353   173.30
2015.50    0.353   172.83
2015.60    0.353   172.35
2015.70    0.354   171.88
2015.80    0.354   171.41
2015.90    0.354   170.93
2016.00    0.354   170.46
2016.10    0.355   169.99
2016.20    0.355   169.52
2016.30    0.355   169.05
2016.40    0.356   168.58
2016.50    0.356   168.12
2016.60    0.356   167.65
2016.70    0.356   167.18
2016.80    0.357   166.72
2016.90    0.357   166.25
2017.00    0.357   165.79
2017.10    0.358   165.32
2017.20    0.358   164.86
2017.30    0.358   164.40
2017.40    0.359   163.94
2017.50    0.359   163.48
2017.60    0.359   163.02
2017.70    0.359   162.56
2017.80    0.360   162.11
2017.90    0.360   161.65
2018.00    0.360   161.19
2018.10    0.361   160.74
2018.20    0.361   160.28
2018.30    0.361   159.83
2018.40    0.362   159.38
2018.50    0.362   158.92
2018.60    0.362   158.47
2018.70    0.363   158.02
2018.80    0.363   157.57
2018.90    0.363   157.13
2019.00    0.364   156.68
2019.10    0.364   156.23
2019.20    0.364   155.78
2019.30    0.365   155.34
2019.40    0.365   154.89
2019.50    0.365   154.45
2019.60    0.366   154.01
2019.70    0.366   153.57
2019.80    0.366   153.12
2019.90    0.367   152.68
2020.00    0.367   152.24
2020.10    0.367   151.80
2020.20    0.368   151.37
2020.30    0.368   150.93
2020.40    0.368   150.49
2020.50    0.369   150.06
2020.60    0.369   149.62
2020.70    0.369   149.19
2020.80    0.370   148.76
2020.90    0.370   148.32
2021.00    0.370   147.89
2021.10    0.371   147.46
2021.20    0.371   147.03
2021.30    0.372   146.60
2021.40    0.372   146.17
2021.50    0.372   145.75
2021.60    0.373   145.32
2021.70    0.373   144.89
2021.80    0.373   144.47
2021.90    0.374   144.04
2022.00    0.374   143.62
2022.10    0.374   143.20
2022.20    0.375   142.78
2022.30    0.375   142.35
2022.40    0.375   141.93
2022.50    0.376   141.51
2022.60    0.376   141.09
2022.70    0.376   140.68
2022.80    0.376   140.26
2022.90    0.377   139.84
2023.00    0.377   139.42
2023.10    0.377   139.01
2023.20    0.378   138.59
2023.30    0.378   138.18
2023.40    0.378   137.77
2023.50    0.379   137.35
2023.60    0.379   136.94
2023.70    0.379   136.53
2023.80    0.380   136.12
2023.90    0.380   135.71
2024.00    0.380   135.30
2024.10    0.380   134.89
2024.20    0.381   134.48
2024.30    0.381   134.07
2024.40    0.381   133.66
2024.50    0.381   133.26
2024.60    0.382   132.85
2024.70    0.382   132.44
2024.80    0.382   132.04
2024.90    0.382   131.63
2025.00    0.383   131.23
2025.10    0.383   130.82
2025.20    0.383   130.42
2025.30    0.383   130.02
2025.40    0.383   129.61
2025.50    0.384   129.21
2025.60    0.384   128.81
2025.70    0.384   128.41
2025.80    0.384   128.01
2025.90    0.384   127.60
2026.00    0.384   127.20
2026.10    0.384   126.80
2026.20    0.385   126.40
2026.30    0.385   126.00
2026.40    0.385   125.60
2026.50    0.385   125.20
2026.60    0.385   124.80
2026.70    0.385   124.40
2026.80    0.385   124.00
2026.90    0.385   123.61
2027.00    0.385   123.21
2027.10    0.385   122.81
2027.20    0.385   122.41
2027.30    0.385   122.01
2027.40    0.385   121.61
2027.50    0.385   121.21
2027.60    0.385   120.81
2027.70    0.385   120.41
2027.80    0.385   120.01
2027.90    0.385   119.61
2028.00    0.385   119.21
2028.10    0.384   118.81
2028.20    0.384   118.41
2028.30    0.384   118.01
2028.40    0.384   117.61
2028.50    0.384   117.21
2028.60    0.383   116.81
2028.70    0.383   116.40
2028.80    0.383   116.00
2028.90    0.383   115.60
2029.00    0.382   115.19
2029.10    0.382   114.79
2029.20    0.382   114.38
2029.30    0.381   113.98
2029.40    0.381   113.57
2029.50    0.380   113.16
2029.60    0.380   112.75
2029.70    0.380   112.34
2029.80    0.379   111.93
2029.90    0.378   111.52
2030.00    0.378   111.10
2030.10    0.377   110.69
2030.20    0.377   110.27
2030.30    0.376   109.85
2030.40    0.375   109.43
2030.50    0.375   109.01
2030.60    0.374   108.59
2030.70    0.373   108.17
2030.80    0.372   107.74
2030.90    0.371   107.31
2031.00    0.371   106.88
2031.10    0.370   106.45
2031.20    0.369   106.02
2031.30    0.368   105.58
2031.40    0.367   105.14
2031.50    0.365   104.70
2031.60    0.364   104.25
2031.70    0.363   103.81
2031.80    0.362   103.36
2031.90    0.361   102.90
2032.00    0.359   102.45
2032.10    0.358   101.99
2032.20    0.356   101.52
2032.30    0.355   101.05
2032.40    0.353   100.58
2032.50    0.352   100.10
2032.60    0.350    99.62
2032.70    0.348    99.14
2032.80    0.346    98.65
2032.90    0.344    98.15
2033.00    0.342    97.65
2033.10    0.340    97.14
2033.20    0.338    96.62
2033.30    0.336    96.10
2033.40    0.333    95.57
2033.50    0.331    95.04
2033.60    0.328    94.49
2033.70    0.326    93.94
2033.80    0.323    93.38
2033.90    0.320    92.81
2034.00    0.317    92.22
2034.10    0.314    91.63
2034.20    0.311    91.02
2034.30    0.308    90.41
2034.40    0.304    89.77
2034.50    0.300    89.12
2034.60    0.296    88.46
2034.70    0.292    87.78
2034.80    0.288    87.08
2034.90    0.284    86.35
2035.00    0.279    85.61
2035.10    0.274    84.84
2035.20    0.269    84.04
2035.30    0.264    83.20
2035.40    0.259    82.34
2035.50    0.253    81.43
2035.60    0.246    80.48
2035.70    0.240    79.48
2035.80    0.233    78.42
2035.90    0.226    77.30
2036.00    0.218    76.10
2036.10    0.210    74.80
2036.20    0.201    73.40
2036.30    0.191    71.86
2036.40    0.181    70.16
2036.50    0.171    68.25
2036.60    0.159    66.07
2036.70    0.147    63.54
2036.80    0.134    60.53
2036.90    0.119    56.82
2037.00    0.104    52.07
2037.10    0.089    45.66
2037.20    0.073    36.46
2037.30    0.058    22.39
2037.40    0.048     0.63
2037.50    0.045   332.24
2037.60    0.053   306.72
2037.70    0.066   289.39
2037.80    0.081   278.24
2037.90    0.096   270.66
2038.00    0.111   265.17
2038.10    0.125   260.94
2038.20    0.138   257.53
2038.30    0.150   254.69
2038.40    0.161   252.25
2038.50    0.171   250.11
2038.60    0.181   248.20
2038.70    0.189   246.47
2038.80    0.197   244.89
2038.90    0.205   243.42
2039.00    0.212   242.06
2039.10    0.218   240.78
2039.20    0.224   239.57
2039.30    0.230   238.42
2039.40    0.235   237.32
2039.50    0.240   236.27
2039.60    0.245   235.26
2039.70    0.249   234.29
2039.80    0.253   233.35
2039.90    0.257   232.44
2040.00    0.261   231.56
2040.10    0.264   230.71
2040.20    0.268   229.87
2040.30    0.271   229.06
2040.40    0.274   228.26
2040.50    0.277   227.48
2040.60    0.280   226.72
2040.70    0.282   225.97
2040.80    0.285   225.23
2040.90    0.287   224.51
2041.00    0.290   223.80
2041.10    0.292   223.10
2041.20    0.294   222.41
2041.30    0.296   221.73
2041.40    0.298   221.06
2041.50    0.300   220.40
2041.60    0.302   219.74
2041.70    0.303   219.09
2041.80    0.305   218.45
2041.90    0.306   217.82
2042.00    0.308   217.19
2042.10    0.309   216.57
2042.20    0.311   215.96
2042.30    0.312   215.35
2042.40    0.313   214.74



 

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 16:58:14


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