Double Star Calculator - Orbit

Orbital Elements for A1765

WDS:	A1765	WDS ID/Discoverer
P:	28.060	Orbital period (years)
a:	0.179	Semi-major axis (arcseconds)
i:	117.2	Inclination (degrees)
Ω:	131.5	Longitude of ascending node (degrees)
T:	1994.860	Epoch of periastron passage (year)
e:	0.408	Eccentricity
ω:	268.3	Longitude of periastron (degrees)
Start-Year:	2010.97	Year
End-Year:	2039.03	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1765
Position:	093751.67+455413.1	Epoch-2000 right ascension and declination
WDS-ID:	09379+4554	WDS designation
Discoverer Code:	A1765	Discover designation and components
ADS number:	7457	Aitken Double Star catalog
HD number:	83158	HD catalog number
Hipparcos number:	47250	Hipparcos catalog number
V1:	9.40	Magnitude of the primary
V2:	8.85	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2001	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Doc2012a	Reference

Double Star Orbit for A1765

WDS 6th Orbit including measures of A1765

-- 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 A1765

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.151   131.48
--------------------------
2010.97    0.121    19.00
2011.07    0.121    17.83
2011.17    0.122    16.66
2011.27    0.122    15.51
2011.37    0.123    14.38
2011.47    0.124    13.25
2011.57    0.125    12.14
2011.67    0.125    11.04
2011.77    0.126     9.96
2011.87    0.127     8.89
2011.97    0.128     7.83
2012.07    0.129     6.79
2012.17    0.129     5.76
2012.27    0.130     4.74
2012.37    0.131     3.74
2012.47    0.132     2.75
2012.57    0.133     1.77
2012.67    0.134     0.81
2012.77    0.135   359.86
2012.87    0.136   358.93
2012.97    0.137   358.00
2013.07    0.138   357.09
2013.17    0.139   356.19
2013.27    0.140   355.31
2013.37    0.141   354.43
2013.47    0.142   353.57
2013.57    0.142   352.72
2013.67    0.143   351.88
2013.77    0.144   351.05
2013.87    0.145   350.23
2013.97    0.146   349.43
2014.07    0.147   348.63
2014.17    0.148   347.84
2014.27    0.149   347.07
2014.37    0.150   346.30
2014.47    0.151   345.54
2014.57    0.152   344.79
2014.67    0.153   344.05
2014.77    0.153   343.32
2014.87    0.154   342.59
2014.97    0.155   341.87
2015.07    0.156   341.16
2015.17    0.157   340.46
2015.27    0.157   339.77
2015.37    0.158   339.08
2015.47    0.159   338.39
2015.57    0.160   337.72
2015.67    0.160   337.05
2015.77    0.161   336.38
2015.87    0.161   335.72
2015.97    0.162   335.06
2016.07    0.162   334.41
2016.17    0.163   333.76
2016.27    0.163   333.12
2016.37    0.164   332.48
2016.47    0.164   331.84
2016.57    0.165   331.20
2016.67    0.165   330.57
2016.77    0.165   329.94
2016.87    0.165   329.31
2016.97    0.166   328.69
2017.07    0.166   328.06
2017.17    0.166   327.44
2017.27    0.166   326.81
2017.37    0.166   326.19
2017.47    0.166   325.56
2017.57    0.165   324.94
2017.67    0.165   324.31
2017.77    0.165   323.68
2017.87    0.165   323.05
2017.97    0.164   322.41
2018.07    0.164   321.77
2018.17    0.163   321.13
2018.27    0.163   320.49
2018.37    0.162   319.83
2018.47    0.161   319.18
2018.57    0.160   318.51
2018.67    0.159   317.84
2018.77    0.158   317.16
2018.87    0.157   316.47
2018.97    0.156   315.77
2019.07    0.155   315.06
2019.17    0.153   314.34
2019.27    0.152   313.60
2019.37    0.150   312.85
2019.47    0.149   312.09
2019.57    0.147   311.30
2019.67    0.145   310.50
2019.77    0.143   309.67
2019.87    0.141   308.82
2019.97    0.139   307.95
2020.07    0.137   307.04
2020.17    0.134   306.10
2020.27    0.132   305.13
2020.37    0.129   304.12
2020.47    0.126   303.07
2020.57    0.123   301.96
2020.67    0.120   300.81
2020.77    0.117   299.59
2020.87    0.114   298.30
2020.97    0.111   296.94
2021.07    0.107   295.49
2021.17    0.104   293.95
2021.27    0.100   292.29
2021.37    0.096   290.51
2021.47    0.092   288.59
2021.57    0.089   286.49
2021.67    0.085   284.21
2021.77    0.081   281.71
2021.87    0.077   278.96
2021.97    0.073   275.91
2022.07    0.069   272.53
2022.17    0.066   268.76
2022.27    0.062   264.56
2022.37    0.059   259.88
2022.47    0.056   254.68
2022.57    0.053   248.94
2022.67    0.051   242.67
2022.77    0.050   235.93
2022.87    0.049   228.84
2022.97    0.048   221.56
2023.07    0.049   214.29
2023.17    0.050   207.22
2023.27    0.051   200.50
2023.37    0.054   194.26
2023.47    0.056   188.55
2023.57    0.059   183.38
2023.67    0.062   178.73
2023.77    0.066   174.56
2023.87    0.070   170.82
2023.97    0.073   167.46
2024.07    0.077   164.44
2024.17    0.081   161.70
2024.27    0.085   159.22
2024.37    0.089   156.96
2024.47    0.093   154.88
2024.57    0.097   152.97
2024.67    0.100   151.20
2024.77    0.104   149.56
2024.87    0.108   148.03
2024.97    0.111   146.60
2025.07    0.115   145.26
2025.17    0.118   143.99
2025.27    0.121   142.78
2025.37    0.124   141.64
2025.47    0.127   140.55
2025.57    0.130   139.51
2025.67    0.133   138.52
2025.77    0.135   137.56
2025.87    0.138   136.64
2025.97    0.140   135.75
2026.07    0.142   134.89
2026.17    0.145   134.06
2026.27    0.147   133.25
2026.37    0.149   132.47
2026.47    0.151   131.70
2026.57    0.152   130.95
2026.67    0.154   130.22
2026.77    0.156   129.51
2026.87    0.157   128.80
2026.97    0.158   128.11
2027.07    0.160   127.44
2027.17    0.161   126.77
2027.27    0.162   126.11
2027.37    0.163   125.46
2027.47    0.164   124.82
2027.57    0.165   124.19
2027.67    0.166   123.56
2027.77    0.166   122.94
2027.87    0.167   122.32
2027.97    0.168   121.71
2028.07    0.168   121.10
2028.17    0.169   120.50
2028.27    0.169   119.89
2028.37    0.169   119.30
2028.47    0.170   118.70
2028.57    0.170   118.10
2028.67    0.170   117.51
2028.77    0.170   116.92
2028.87    0.170   116.32
2028.97    0.170   115.73
2029.07    0.170   115.14
2029.17    0.170   114.54
2029.27    0.170   113.95
2029.37    0.170   113.35
2029.47    0.169   112.76
2029.57    0.169   112.16
2029.67    0.169   111.55
2029.77    0.168   110.95
2029.87    0.168   110.34
2029.97    0.167   109.73
2030.07    0.167   109.12
2030.17    0.166   108.50
2030.27    0.166   107.88
2030.37    0.165   107.26
2030.47    0.165   106.63
2030.57    0.164   105.99
2030.67    0.163   105.35
2030.77    0.163   104.70
2030.87    0.162   104.05
2030.97    0.161   103.40
2031.07    0.160   102.73
2031.17    0.160   102.06
2031.27    0.159   101.39
2031.37    0.158   100.70
2031.47    0.157   100.01
2031.57    0.156    99.31
2031.67    0.155    98.61
2031.77    0.154    97.89
2031.87    0.154    97.17
2031.97    0.153    96.44
2032.07    0.152    95.70
2032.17    0.151    94.95
2032.27    0.150    94.19
2032.37    0.149    93.42
2032.47    0.148    92.64
2032.57    0.147    91.85
2032.67    0.146    91.05
2032.77    0.145    90.24
2032.87    0.144    89.42
2032.97    0.143    88.58
2033.07    0.142    87.74
2033.17    0.141    86.88
2033.27    0.140    86.01
2033.37    0.139    85.13
2033.47    0.138    84.24
2033.57    0.137    83.33
2033.67    0.136    82.41
2033.77    0.135    81.48
2033.87    0.134    80.53
2033.97    0.133    79.57
2034.07    0.132    78.60
2034.17    0.131    77.62
2034.27    0.131    76.62
2034.37    0.130    75.60
2034.47    0.129    74.57
2034.57    0.128    73.53
2034.67    0.127    72.48
2034.77    0.126    71.41
2034.87    0.126    70.33
2034.97    0.125    69.23
2035.07    0.124    68.12
2035.17    0.123    67.00
2035.27    0.123    65.86
2035.37    0.122    64.72
2035.47    0.121    63.55
2035.57    0.121    62.38
2035.67    0.120    61.20
2035.77    0.119    60.00
2035.87    0.119    58.79
2035.97    0.118    57.58
2036.07    0.118    56.35
2036.17    0.118    55.11
2036.27    0.117    53.86
2036.37    0.117    52.61
2036.47    0.116    51.35
2036.57    0.116    50.08
2036.67    0.116    48.81
2036.77    0.116    47.53
2036.87    0.116    46.24
2036.97    0.115    44.96
2037.07    0.115    43.67
2037.17    0.115    42.38
2037.27    0.115    41.08
2037.37    0.115    39.79
2037.47    0.115    38.50
2037.57    0.115    37.20
2037.67    0.115    35.91
2037.77    0.116    34.63
2037.87    0.116    33.35
2037.97    0.116    32.07
2038.07    0.116    30.80
2038.17    0.117    29.53
2038.27    0.117    28.27
2038.37    0.117    27.02
2038.47    0.118    25.78
2038.57    0.118    24.54
2038.67    0.119    23.32
2038.77    0.119    22.11
2038.87    0.120    20.90
2038.97    0.120    19.71

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 16:19:39