Double Star Calculator - Orbit

Orbital Elements for A1803AB

WDS:	A1803AB	WDS ID/Discoverer
P:	35.660	Orbital period (years)
a:	0.189	Semi-major axis (arcseconds)
i:	95.4	Inclination (degrees)
Ω:	124.1	Longitude of ascending node (degrees)
T:	1950.700	Epoch of periastron passage (year)
e:	0.002	Eccentricity
ω:	282.0	Longitude of periastron (degrees)
Start-Year:	2007.17	Year
End-Year:	2042.83	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1803AB
Position:	001724.50+085234.8	Epoch-2000 right ascension and declination
WDS-ID:	00174+0853	WDS designation
Discoverer Code:	A1803AB	Discover designation and components
ADS number:	238	Aitken Double Star catalog
HD number:	1317	HD catalog number
Hipparcos number:	1392	Hipparcos catalog number
V1:	8.38	Magnitude of the primary
V2:	7.78	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	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:	Hrt2010a	Reference

Double Star Orbit for A1803AB

WDS 6th Orbit including measures of A1803AB

-- 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 A1803AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.159   127.55
--------------------------
2007.17    0.127   310.07
2007.27    0.130   309.87
2007.37    0.132   309.67
2007.47    0.134   309.48
2007.57    0.137   309.29
2007.67    0.139   309.12
2007.77    0.141   308.94
2007.87    0.143   308.77
2007.97    0.146   308.61
2008.07    0.148   308.45
2008.17    0.150   308.30
2008.27    0.152   308.15
2008.37    0.154   308.01
2008.47    0.155   307.86
2008.57    0.157   307.72
2008.67    0.159   307.59
2008.77    0.161   307.46
2008.87    0.163   307.33
2008.97    0.164   307.20
2009.07    0.166   307.07
2009.17    0.167   306.95
2009.27    0.169   306.83
2009.37    0.170   306.71
2009.47    0.172   306.60
2009.57    0.173   306.48
2009.67    0.174   306.37
2009.77    0.176   306.26
2009.87    0.177   306.15
2009.97    0.178   306.05
2010.07    0.179   305.94
2010.17    0.180   305.83
2010.27    0.181   305.73
2010.37    0.182   305.63
2010.47    0.183   305.52
2010.57    0.184   305.42
2010.67    0.185   305.32
2010.77    0.185   305.22
2010.87    0.186   305.13
2010.97    0.186   305.03
2011.07    0.187   304.93
2011.17    0.187   304.83
2011.27    0.188   304.74
2011.37    0.188   304.64
2011.47    0.188   304.55
2011.57    0.189   304.45
2011.67    0.189   304.36
2011.77    0.189   304.26
2011.87    0.189   304.17
2011.97    0.189   304.07
2012.07    0.189   303.98
2012.17    0.189   303.88
2012.27    0.189   303.78
2012.37    0.189   303.69
2012.47    0.188   303.59
2012.57    0.188   303.50
2012.67    0.187   303.40
2012.77    0.187   303.30
2012.87    0.187   303.21
2012.97    0.186   303.11
2013.07    0.185   303.01
2013.17    0.185   302.91
2013.27    0.184   302.81
2013.37    0.183   302.71
2013.47    0.182   302.61
2013.57    0.181   302.51
2013.67    0.180   302.40
2013.77    0.179   302.30
2013.87    0.178   302.19
2013.97    0.177   302.08
2014.07    0.176   301.98
2014.17    0.175   301.86
2014.27    0.173   301.75
2014.37    0.172   301.64
2014.47    0.171   301.52
2014.57    0.169   301.41
2014.67    0.168   301.29
2014.77    0.166   301.16
2014.87    0.164   301.04
2014.97    0.163   300.91
2015.07    0.161   300.78
2015.17    0.159   300.65
2015.27    0.158   300.52
2015.37    0.156   300.38
2015.47    0.154   300.24
2015.57    0.152   300.09
2015.67    0.150   299.94
2015.77    0.148   299.79
2015.87    0.146   299.63
2015.97    0.144   299.47
2016.07    0.141   299.30
2016.17    0.139   299.13
2016.27    0.137   298.95
2016.37    0.135   298.77
2016.47    0.132   298.58
2016.57    0.130   298.38
2016.67    0.127   298.17
2016.77    0.125   297.96
2016.87    0.123   297.74
2016.97    0.120   297.51
2017.07    0.117   297.27
2017.17    0.115   297.02
2017.27    0.112   296.75
2017.37    0.110   296.48
2017.47    0.107   296.19
2017.57    0.104   295.88
2017.67    0.101   295.56
2017.77    0.099   295.22
2017.87    0.096   294.86
2017.97    0.093   294.48
2018.07    0.090   294.07
2018.17    0.087   293.64
2018.27    0.084   293.18
2018.37    0.081   292.68
2018.47    0.078   292.15
2018.57    0.075   291.58
2018.67    0.072   290.95
2018.77    0.069   290.28
2018.87    0.066   289.54
2018.97    0.063   288.74
2019.07    0.060   287.85
2019.17    0.057   286.87
2019.27    0.054   285.78
2019.37    0.051   284.57
2019.47    0.048   283.20
2019.57    0.045   281.65
2019.67    0.042   279.88
2019.77    0.039   277.85
2019.87    0.037   275.49
2019.97    0.034   272.74
2020.07    0.031   269.48
2020.17    0.028   265.61
2020.27    0.026   260.97
2020.37    0.024   255.38
2020.47    0.022   248.67
2020.57    0.020   240.68
2020.67    0.019   231.44
2020.77    0.018   221.18
2020.87    0.018   210.45
2020.97    0.018   199.97
2021.07    0.019   190.35
2021.17    0.021   181.95
2021.27    0.023   174.84
2021.37    0.025   168.91
2021.47    0.028   163.98
2021.57    0.030   159.88
2021.67    0.033   156.45
2021.77    0.036   153.54
2021.87    0.038   151.07
2021.97    0.041   148.94
2022.07    0.044   147.09
2022.17    0.047   145.47
2022.27    0.050   144.05
2022.37    0.053   142.79
2022.47    0.056   141.66
2022.57    0.059   140.65
2022.67    0.062   139.73
2022.77    0.065   138.90
2022.87    0.068   138.15
2022.97    0.071   137.45
2023.07    0.074   136.81
2023.17    0.077   136.22
2023.27    0.080   135.68
2023.37    0.083   135.17
2023.47    0.086   134.70
2023.57    0.089   134.26
2023.67    0.092   133.84
2023.77    0.095   133.46
2023.87    0.098   133.09
2023.97    0.100   132.74
2024.07    0.103   132.42
2024.17    0.106   132.11
2024.27    0.109   131.81
2024.37    0.111   131.53
2024.47    0.114   131.26
2024.57    0.117   131.01
2024.67    0.119   130.76
2024.77    0.122   130.53
2024.87    0.124   130.30
2024.97    0.127   130.09
2025.07    0.129   129.88
2025.17    0.132   129.68
2025.27    0.134   129.49
2025.37    0.136   129.30
2025.47    0.138   129.12
2025.57    0.141   128.95
2025.67    0.143   128.78
2025.77    0.145   128.62
2025.87    0.147   128.46
2025.97    0.149   128.30
2026.07    0.151   128.15
2026.17    0.153   128.00
2026.27    0.155   127.86
2026.37    0.157   127.72
2026.47    0.159   127.59
2026.57    0.161   127.45
2026.67    0.162   127.32
2026.77    0.164   127.19
2026.87    0.166   127.07
2026.97    0.167   126.95
2027.07    0.169   126.83
2027.17    0.170   126.71
2027.27    0.172   126.59
2027.37    0.173   126.48
2027.47    0.174   126.36
2027.57    0.175   126.25
2027.67    0.177   126.14
2027.77    0.178   126.04
2027.87    0.179   125.93
2027.97    0.180   125.82
2028.07    0.181   125.72
2028.17    0.182   125.62
2028.27    0.183   125.51
2028.37    0.184   125.41
2028.47    0.184   125.31
2028.57    0.185   125.21
2028.67    0.186   125.11
2028.77    0.186   125.02
2028.87    0.187   124.92
2028.97    0.187   124.82
2029.07    0.188   124.72
2029.17    0.188   124.63
2029.27    0.188   124.53
2029.37    0.189   124.44
2029.47    0.189   124.34
2029.57    0.189   124.25
2029.67    0.189   124.15
2029.77    0.189   124.06
2029.87    0.189   123.96
2029.97    0.189   123.87
2030.07    0.189   123.77
2030.17    0.188   123.68
2030.27    0.188   123.58
2030.37    0.188   123.48
2030.47    0.187   123.39
2030.57    0.187   123.29
2030.67    0.186   123.19
2030.77    0.186   123.09
2030.87    0.185   123.00
2030.97    0.185   122.90
2031.07    0.184   122.80
2031.17    0.183   122.70
2031.27    0.182   122.59
2031.37    0.181   122.49
2031.47    0.180   122.39
2031.57    0.179   122.28
2031.67    0.178   122.18
2031.77    0.177   122.07
2031.87    0.176   121.96
2031.97    0.175   121.85
2032.07    0.173   121.74
2032.17    0.172   121.62
2032.27    0.171   121.51
2032.37    0.169   121.39
2032.47    0.168   121.27
2032.57    0.166   121.15
2032.67    0.164   121.02
2032.77    0.163   120.90
2032.87    0.161   120.77
2032.97    0.159   120.63
2033.07    0.158   120.50
2033.17    0.156   120.36
2033.27    0.154   120.22
2033.37    0.152   120.07
2033.47    0.150   119.93
2033.57    0.148   119.77
2033.67    0.146   119.61
2033.77    0.144   119.45
2033.87    0.141   119.29
2033.97    0.139   119.11
2034.07    0.137   118.94
2034.17    0.135   118.75
2034.27    0.132   118.56
2034.37    0.130   118.36
2034.47    0.128   118.16
2034.57    0.125   117.95
2034.67    0.123   117.73
2034.77    0.120   117.50
2034.87    0.118   117.26
2034.97    0.115   117.00
2035.07    0.112   116.74
2035.17    0.110   116.47
2035.27    0.107   116.18
2035.37    0.104   115.87
2035.47    0.102   115.55
2035.57    0.099   115.22
2035.67    0.096   114.86
2035.77    0.093   114.48
2035.87    0.090   114.08
2035.97    0.087   113.65
2036.07    0.085   113.19
2036.17    0.082   112.70
2036.27    0.079   112.17
2036.37    0.076   111.60
2036.47    0.073   110.98
2036.57    0.070   110.32
2036.67    0.067   109.59
2036.77    0.064   108.79
2036.87    0.061   107.92
2036.97    0.058   106.95
2037.07    0.055   105.88
2037.17    0.052   104.69
2037.27    0.049   103.34
2037.37    0.046   101.83
2037.47    0.043   100.10
2037.57    0.040    98.11
2037.67    0.037    95.82
2037.77    0.034    93.14
2037.87    0.031    89.99
2037.97    0.029    86.25
2038.07    0.026    81.77
2038.17    0.024    76.39
2038.27    0.022    69.93
2038.37    0.020    62.25
2038.47    0.019    53.30
2038.57    0.018    43.28
2038.67    0.018    32.67
2038.77    0.018    22.16
2038.87    0.019    12.39
2038.97    0.021     3.77
2039.07    0.022   356.42
2039.17    0.025   350.27
2039.27    0.027   345.15
2039.37    0.030   340.89
2039.47    0.032   337.32
2039.57    0.035   334.30
2039.67    0.038   331.73
2039.77    0.041   329.53
2039.87    0.044   327.62
2039.97    0.047   325.95
2040.07    0.050   324.48
2040.17    0.053   323.18
2040.27    0.056   322.02
2040.37    0.059   320.98
2040.47    0.062   320.04
2040.57    0.065   319.19
2040.67    0.068   318.41
2040.77    0.071   317.70
2040.87    0.074   317.05
2040.97    0.077   316.45
2041.07    0.080   315.89
2041.17    0.082   315.37
2041.27    0.085   314.89
2041.37    0.088   314.44
2041.47    0.091   314.02
2041.57    0.094   313.62
2041.67    0.097   313.25
2041.77    0.100   312.90
2041.87    0.102   312.56
2041.97    0.105   312.25
2042.07    0.108   311.95
2042.17    0.110   311.66
2042.27    0.113   311.39
2042.37    0.116   311.13
2042.47    0.118   310.88
2042.57    0.121   310.65
2042.67    0.123   310.42
2042.77    0.126   310.20

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 14:38:08