Double Star Calculator - Orbit

Orbital Elements for COU1145

WDS:	COU1145	WDS ID/Discoverer
P:	20.700	Orbital period (years)
a:	0.1788	Semi-major axis (arcseconds)
i:	110.28	Inclination (degrees)
Ω:	136.34	Longitude of ascending node (degrees)
T:	1988.724	Epoch of periastron passage (year)
e:	0.6081	Eccentricity
ω:	261.11	Longitude of periastron (degrees)
Start-Year:	2014.65	Year
End-Year:	2035.35	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1145
Position:	174858.27+370343.0	Epoch-2000 right ascension and declination
WDS-ID:	17490+3704	WDS designation
Discoverer Code:	COU1145	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	162338	HD catalog number
Hipparcos number:	87204	Hipparcos catalog number
V1:	7.82	Magnitude of the primary
V2:	8.32	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:	Hrt1996a	Reference

Double Star Orbit for COU1145

WDS 6th Orbit including measures of COU1145

-- 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 COU1145

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.130   340.35
--------------------------
2014.65    0.164   114.05
2014.75    0.163   113.48
2014.85    0.162   112.90
2014.95    0.162   112.32
2015.05    0.161   111.73
2015.15    0.160   111.14
2015.25    0.160   110.54
2015.35    0.159   109.94
2015.45    0.158   109.33
2015.55    0.157   108.71
2015.65    0.156   108.08
2015.75    0.155   107.45
2015.85    0.154   106.81
2015.95    0.153   106.17
2016.05    0.152   105.51
2016.15    0.151   104.84
2016.25    0.150   104.17
2016.35    0.149   103.48
2016.45    0.148   102.79
2016.55    0.147   102.08
2016.65    0.145   101.36
2016.75    0.144   100.63
2016.85    0.143    99.89
2016.95    0.142    99.13
2017.05    0.141    98.37
2017.15    0.139    97.59
2017.25    0.138    96.79
2017.35    0.137    95.98
2017.45    0.136    95.16
2017.55    0.134    94.31
2017.65    0.133    93.46
2017.75    0.132    92.58
2017.85    0.130    91.69
2017.95    0.129    90.79
2018.05    0.128    89.86
2018.15    0.127    88.92
2018.25    0.125    87.95
2018.35    0.124    86.97
2018.45    0.123    85.97
2018.55    0.122    84.95
2018.65    0.120    83.90
2018.75    0.119    82.84
2018.85    0.118    81.75
2018.95    0.117    80.64
2019.05    0.116    79.51
2019.15    0.115    78.35
2019.25    0.113    77.18
2019.35    0.112    75.98
2019.45    0.111    74.75
2019.55    0.110    73.51
2019.65    0.109    72.24
2019.75    0.108    70.94
2019.85    0.107    69.63
2019.95    0.106    68.29
2020.05    0.106    66.92
2020.15    0.105    65.54
2020.25    0.104    64.13
2020.35    0.103    62.70
2020.45    0.102    61.25
2020.55    0.102    59.78
2020.65    0.101    58.29
2020.75    0.100    56.79
2020.85    0.100    55.26
2020.95    0.099    53.72
2021.05    0.099    52.17
2021.15    0.099    50.60
2021.25    0.098    49.03
2021.35    0.098    47.44
2021.45    0.098    45.84
2021.55    0.098    44.24
2021.65    0.097    42.63
2021.75    0.097    41.02
2021.85    0.097    39.40
2021.95    0.097    37.79
2022.05    0.097    36.18
2022.15    0.098    34.57
2022.25    0.098    32.97
2022.35    0.098    31.38
2022.45    0.098    29.79
2022.55    0.099    28.21
2022.65    0.099    26.65
2022.75    0.100    25.10
2022.85    0.100    23.56
2022.95    0.101    22.04
2023.05    0.101    20.54
2023.15    0.102    19.05
2023.25    0.102    17.59
2023.35    0.103    16.14
2023.45    0.104    14.71
2023.55    0.105    13.30
2023.65    0.105    11.91
2023.75    0.106    10.54
2023.85    0.107     9.20
2023.95    0.108     7.87
2024.05    0.109     6.57
2024.15    0.110     5.29
2024.25    0.111     4.03
2024.35    0.112     2.79
2024.45    0.113     1.57
2024.55    0.113     0.37
2024.65    0.114   359.19
2024.75    0.115   358.03
2024.85    0.116   356.89
2024.95    0.117   355.77
2025.05    0.118   354.67
2025.15    0.119   353.59
2025.25    0.120   352.52
2025.35    0.121   351.47
2025.45    0.122   350.44
2025.55    0.123   349.42
2025.65    0.124   348.41
2025.75    0.125   347.42
2025.85    0.126   346.44
2025.95    0.126   345.48
2026.05    0.127   344.52
2026.15    0.128   343.58
2026.25    0.128   342.65
2026.35    0.129   341.72
2026.45    0.130   340.81
2026.55    0.130   339.90
2026.65    0.130   339.00
2026.75    0.131   338.10
2026.85    0.131   337.21
2026.95    0.131   336.32
2027.05    0.131   335.44
2027.15    0.131   334.55
2027.25    0.131   333.67
2027.35    0.131   332.78
2027.45    0.131   331.89
2027.55    0.130   330.99
2027.65    0.130   330.09
2027.75    0.129   329.17
2027.85    0.128   328.25
2027.95    0.127   327.31
2028.05    0.126   326.35
2028.15    0.124   325.37
2028.25    0.122   324.36
2028.35    0.120   323.33
2028.45    0.118   322.25
2028.55    0.116   321.14
2028.65    0.113   319.97
2028.75    0.110   318.73
2028.85    0.106   317.41
2028.95    0.102   316.00
2029.05    0.098   314.46
2029.15    0.093   312.78
2029.25    0.087   310.89
2029.35    0.081   308.74
2029.45    0.075   306.23
2029.55    0.068   303.23
2029.65    0.061   299.51
2029.75    0.053   294.72
2029.85    0.045   288.23
2029.95    0.037   278.94
2030.05    0.030   265.06
2030.15    0.025   244.68
2030.25    0.025   219.50
2030.35    0.028   196.80
2030.45    0.034   180.71
2030.55    0.042   170.03
2030.65    0.050   162.74
2030.75    0.058   157.49
2030.85    0.066   153.52
2030.95    0.074   150.40
2031.05    0.081   147.84
2031.15    0.088   145.70
2031.25    0.094   143.85
2031.35    0.100   142.24
2031.45    0.106   140.80
2031.55    0.111   139.51
2031.65    0.116   138.32
2031.75    0.121   137.23
2031.85    0.125   136.22
2031.95    0.129   135.27
2032.05    0.132   134.37
2032.15    0.136   133.52
2032.25    0.139   132.71
2032.35    0.142   131.93
2032.45    0.144   131.19
2032.55    0.147   130.47
2032.65    0.149   129.77
2032.75    0.151   129.09
2032.85    0.153   128.43
2032.95    0.155   127.79
2033.05    0.157   127.16
2033.15    0.158   126.54
2033.25    0.159   125.93
2033.35    0.160   125.33
2033.45    0.161   124.74
2033.55    0.162   124.16
2033.65    0.163   123.58
2033.75    0.164   123.01
2033.85    0.164   122.44
2033.95    0.165   121.88
2034.05    0.165   121.32
2034.15    0.166   120.76
2034.25    0.166   120.20
2034.35    0.166   119.64
2034.45    0.166   119.09
2034.55    0.166   118.54
2034.65    0.166   117.98
2034.75    0.166   117.42
2034.85    0.166   116.87
2034.95    0.165   116.31
2035.05    0.165   115.75
2035.15    0.165   115.18
2035.25    0.164   114.62

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 17:43:22