Double Star Calculator - Orbit

Orbital Elements for COU2031

WDS:	COU2031	WDS ID/Discoverer
P:	20.580	Orbital period (years)
a:	0.1499	Semi-major axis (arcseconds)
i:	81.8	Inclination (degrees)
Ω:	147.6	Longitude of ascending node (degrees)
T:	2008.980	Epoch of periastron passage (year)
e:	0.274	Eccentricity
ω:	188.9	Longitude of periastron (degrees)
Start-Year:	2014.71	Year
End-Year:	2035.29	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU2031
Position:	044626.92+422054.2	Epoch-2000 right ascension and declination
WDS-ID:	04464+4221	WDS designation
Discoverer Code:	COU2031	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	30090	HD catalog number
Hipparcos number:	22196	Hipparcos catalog number
V1:	6.9	Magnitude of the primary
V2:	7.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	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:	Doc2014i	Reference

Double Star Orbit for COU2031

WDS 6th Orbit including measures of COU2031

-- 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 COU2031

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.040   299.96
--------------------------
2014.71    0.123   140.05
2014.81    0.127   140.40
2014.91    0.130   140.73
2015.01    0.133   141.04
2015.11    0.136   141.34
2015.21    0.139   141.62
2015.31    0.142   141.89
2015.41    0.145   142.15
2015.51    0.148   142.40
2015.61    0.150   142.65
2015.71    0.153   142.88
2015.81    0.156   143.11
2015.91    0.158   143.33
2016.01    0.160   143.54
2016.11    0.162   143.75
2016.21    0.165   143.95
2016.31    0.167   144.15
2016.41    0.169   144.34
2016.51    0.171   144.52
2016.61    0.172   144.71
2016.71    0.174   144.89
2016.81    0.176   145.06
2016.91    0.177   145.24
2017.01    0.179   145.41
2017.11    0.180   145.57
2017.21    0.181   145.74
2017.31    0.183   145.90
2017.41    0.184   146.06
2017.51    0.185   146.22
2017.61    0.186   146.38
2017.71    0.187   146.53
2017.81    0.187   146.69
2017.91    0.188   146.84
2018.01    0.189   146.99
2018.11    0.189   147.14
2018.21    0.190   147.29
2018.31    0.190   147.44
2018.41    0.190   147.59
2018.51    0.190   147.74
2018.61    0.190   147.89
2018.71    0.190   148.04
2018.81    0.190   148.19
2018.91    0.190   148.34
2019.01    0.190   148.49
2019.11    0.189   148.64
2019.21    0.189   148.79
2019.31    0.189   148.94
2019.41    0.188   149.09
2019.51    0.187   149.25
2019.61    0.186   149.40
2019.71    0.186   149.56
2019.81    0.185   149.71
2019.91    0.184   149.87
2020.01    0.183   150.03
2020.11    0.181   150.20
2020.21    0.180   150.36
2020.31    0.179   150.53
2020.41    0.177   150.70
2020.51    0.176   150.87
2020.61    0.174   151.05
2020.71    0.173   151.23
2020.81    0.171   151.41
2020.91    0.169   151.60
2021.01    0.167   151.79
2021.11    0.165   151.98
2021.21    0.163   152.18
2021.31    0.161   152.39
2021.41    0.159   152.60
2021.51    0.157   152.81
2021.61    0.154   153.04
2021.71    0.152   153.27
2021.81    0.149   153.51
2021.91    0.147   153.75
2022.01    0.144   154.01
2022.11    0.141   154.27
2022.21    0.139   154.55
2022.31    0.136   154.83
2022.41    0.133   155.13
2022.51    0.130   155.45
2022.61    0.127   155.77
2022.71    0.124   156.12
2022.81    0.120   156.48
2022.91    0.117   156.86
2023.01    0.114   157.27
2023.11    0.110   157.70
2023.21    0.107   158.16
2023.31    0.103   158.64
2023.41    0.100   159.17
2023.51    0.096   159.73
2023.61    0.093   160.33
2023.71    0.089   160.99
2023.81    0.085   161.70
2023.91    0.081   162.48
2024.01    0.077   163.34
2024.11    0.074   164.28
2024.21    0.070   165.34
2024.31    0.066   166.51
2024.41    0.062   167.84
2024.51    0.058   169.35
2024.61    0.054   171.08
2024.71    0.050   173.08
2024.81    0.046   175.43
2024.91    0.042   178.21
2025.01    0.038   181.54
2025.11    0.035   185.58
2025.21    0.031   190.55
2025.31    0.028   196.70
2025.41    0.025   204.32
2025.51    0.023   213.66
2025.61    0.021   224.72
2025.71    0.021   237.02
2025.81    0.021   249.60
2025.91    0.022   261.33
2026.01    0.024   271.49
2026.11    0.027   279.89
2026.21    0.030   286.70
2026.31    0.033   292.19
2026.41    0.037   296.64
2026.51    0.040   300.30
2026.61    0.044   303.34
2026.71    0.048   305.89
2026.81    0.052   308.07
2026.91    0.056   309.95
2027.01    0.059   311.59
2027.11    0.063   313.03
2027.21    0.067   314.31
2027.31    0.070   315.46
2027.41    0.074   316.50
2027.51    0.077   317.44
2027.61    0.081   318.31
2027.71    0.084   319.11
2027.81    0.087   319.85
2027.91    0.090   320.54
2028.01    0.092   321.19
2028.11    0.095   321.81
2028.21    0.097   322.39
2028.31    0.100   322.95
2028.41    0.101   323.48
2028.51    0.103   323.99
2028.61    0.105   324.49
2028.71    0.106   324.98
2028.81    0.107   325.45
2028.91    0.108   325.91
2029.01    0.109   326.37
2029.11    0.109   326.83
2029.21    0.109   327.28
2029.31    0.109   327.73
2029.41    0.109   328.19
2029.51    0.108   328.65
2029.61    0.107   329.11
2029.71    0.106   329.59
2029.81    0.104   330.08
2029.91    0.103   330.58
2030.01    0.101   331.10
2030.11    0.099   331.64
2030.21    0.096   332.21
2030.31    0.094   332.80
2030.41    0.091   333.43
2030.51    0.088   334.11
2030.61    0.085   334.83
2030.71    0.082   335.60
2030.81    0.078   336.45
2030.91    0.074   337.38
2031.01    0.071   338.40
2031.11    0.067   339.55
2031.21    0.063   340.83
2031.31    0.059   342.30
2031.41    0.055   343.98
2031.51    0.050   345.94
2031.61    0.046   348.26
2031.71    0.042   351.04
2031.81    0.038   354.44
2031.91    0.034   358.65
2032.01    0.030     3.99
2032.11    0.026    10.83
2032.21    0.023    19.66
2032.31    0.021    30.88
2032.41    0.019    44.43
2032.51    0.019    59.30
2032.61    0.020    73.68
2032.71    0.022    86.08
2032.81    0.025    96.03
2032.91    0.028   103.77
2033.01    0.032   109.77
2033.11    0.036   114.47
2033.21    0.040   118.21
2033.31    0.044   121.25
2033.41    0.049   123.75
2033.51    0.053   125.85
2033.61    0.057   127.62
2033.71    0.062   129.15
2033.81    0.066   130.48
2033.91    0.070   131.64
2034.01    0.074   132.68
2034.11    0.079   133.60
2034.21    0.083   134.43
2034.31    0.087   135.18
2034.41    0.091   135.86
2034.51    0.095   136.48
2034.61    0.099   137.06
2034.71    0.103   137.59
2034.81    0.106   138.09
2034.91    0.110   138.55
2035.01    0.114   138.98
2035.11    0.117   139.38
2035.21    0.121   139.76

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 15:29:41