Double Star Calculator - Orbit

Orbital Elements for COU327AB
WDS: COU327AB WDS ID/Discoverer
P: 51.700 Orbital period (years)
a: 0.1306 Semi-major axis (arcseconds)
i: 81.0 Inclination (degrees)
Ω: 67.5 Longitude of ascending node (degrees)
T: 1987.210 Epoch of periastron passage (year)
e: 0.46 Eccentricity
ω: 326.1 Longitude of periastron (degrees)
Start-Year: 1999.15 Year
End-Year: 2050.85 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU327AB
Position: 202135.69+192940.1 Epoch-2000 right ascension and declination
WDS-ID: 20216+1930 WDS designation
Discoverer Code: COU327AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 193797 HD catalog number
Hipparcos number: 100397 Hipparcos catalog number
V1: 9.1 Magnitude of the primary
V2: 9.1 Magnitude of the secondary
Equinox: Equinox
Date: 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: Tok2024c Reference

Double Star Orbit for COU327AB



WDS 6th Orbit including measures of COU327AB

-- 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 COU327AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.149   249.32
--------------------------
1999.15    0.032   201.41
1999.25    0.033   202.97
1999.35    0.034   204.44
1999.45    0.035   205.82
1999.55    0.036   207.13
1999.65    0.037   208.36
1999.75    0.038   209.53
1999.85    0.039   210.63
1999.95    0.040   211.68
2000.05    0.041   212.67
2000.15    0.042   213.61
2000.25    0.043   214.51
2000.35    0.045   215.36
2000.45    0.046   216.17
2000.55    0.047   216.94
2000.65    0.048   217.68
2000.75    0.049   218.38
2000.85    0.050   219.05
2000.95    0.051   219.69
2001.05    0.052   220.30
2001.15    0.054   220.89
2001.25    0.055   221.46
2001.35    0.056   222.00
2001.45    0.057   222.52
2001.55    0.058   223.02
2001.65    0.059   223.50
2001.75    0.060   223.96
2001.85    0.061   224.40
2001.95    0.063   224.83
2002.05    0.064   225.25
2002.15    0.065   225.65
2002.25    0.066   226.03
2002.35    0.067   226.41
2002.45    0.068   226.77
2002.55    0.069   227.12
2002.65    0.070   227.46
2002.75    0.071   227.78
2002.85    0.073   228.10
2002.95    0.074   228.41
2003.05    0.075   228.71
2003.15    0.076   229.00
2003.25    0.077   229.28
2003.35    0.078   229.56
2003.45    0.079   229.82
2003.55    0.080   230.08
2003.65    0.081   230.34
2003.75    0.082   230.58
2003.85    0.083   230.82
2003.95    0.085   231.06
2004.05    0.086   231.28
2004.15    0.087   231.51
2004.25    0.088   231.72
2004.35    0.089   231.93
2004.45    0.090   232.14
2004.55    0.091   232.34
2004.65    0.092   232.54
2004.75    0.093   232.73
2004.85    0.094   232.92
2004.95    0.095   233.11
2005.05    0.096   233.29
2005.15    0.097   233.46
2005.25    0.098   233.64
2005.35    0.099   233.81
2005.45    0.100   233.97
2005.55    0.101   234.14
2005.65    0.102   234.30
2005.75    0.103   234.45
2005.85    0.104   234.61
2005.95    0.105   234.76
2006.05    0.106   234.91
2006.15    0.107   235.05
2006.25    0.108   235.19
2006.35    0.109   235.33
2006.45    0.110   235.47
2006.55    0.111   235.61
2006.65    0.112   235.74
2006.75    0.113   235.87
2006.85    0.114   236.00
2006.95    0.115   236.13
2007.05    0.115   236.25
2007.15    0.116   236.38
2007.25    0.117   236.50
2007.35    0.118   236.62
2007.45    0.119   236.73
2007.55    0.120   236.85
2007.65    0.121   236.96
2007.75    0.122   237.07
2007.85    0.123   237.19
2007.95    0.123   237.29
2008.05    0.124   237.40
2008.15    0.125   237.51
2008.25    0.126   237.61
2008.35    0.127   237.72
2008.45    0.128   237.82
2008.55    0.129   237.92
2008.65    0.129   238.02
2008.75    0.130   238.12
2008.85    0.131   238.21
2008.95    0.132   238.31
2009.05    0.133   238.40
2009.15    0.133   238.50
2009.25    0.134   238.59
2009.35    0.135   238.68
2009.45    0.136   238.77
2009.55    0.136   238.86
2009.65    0.137   238.95
2009.75    0.138   239.03
2009.85    0.139   239.12
2009.95    0.139   239.20
2010.05    0.140   239.29
2010.15    0.141   239.37
2010.25    0.142   239.46
2010.35    0.142   239.54
2010.45    0.143   239.62
2010.55    0.144   239.70
2010.65    0.144   239.78
2010.75    0.145   239.86
2010.85    0.146   239.93
2010.95    0.147   240.01
2011.05    0.147   240.09
2011.15    0.148   240.16
2011.25    0.149   240.24
2011.35    0.149   240.31
2011.45    0.150   240.39
2011.55    0.150   240.46
2011.65    0.151   240.53
2011.75    0.152   240.60
2011.85    0.152   240.68
2011.95    0.153   240.75
2012.05    0.153   240.82
2012.15    0.154   240.89
2012.25    0.155   240.96
2012.35    0.155   241.03
2012.45    0.156   241.09
2012.55    0.156   241.16
2012.65    0.157   241.23
2012.75    0.157   241.30
2012.85    0.158   241.36
2012.95    0.159   241.43
2013.05    0.159   241.49
2013.15    0.160   241.56
2013.25    0.160   241.62
2013.35    0.161   241.69
2013.45    0.161   241.75
2013.55    0.162   241.81
2013.65    0.162   241.88
2013.75    0.163   241.94
2013.85    0.163   242.00
2013.95    0.163   242.06
2014.05    0.164   242.12
2014.15    0.164   242.19
2014.25    0.165   242.25
2014.35    0.165   242.31
2014.45    0.166   242.37
2014.55    0.166   242.43
2014.65    0.166   242.49
2014.75    0.167   242.55
2014.85    0.167   242.61
2014.95    0.168   242.66
2015.05    0.168   242.72
2015.15    0.168   242.78
2015.25    0.169   242.84
2015.35    0.169   242.90
2015.45    0.169   242.95
2015.55    0.170   243.01
2015.65    0.170   243.07
2015.75    0.170   243.13
2015.85    0.171   243.18
2015.95    0.171   243.24
2016.05    0.171   243.30
2016.15    0.172   243.35
2016.25    0.172   243.41
2016.35    0.172   243.46
2016.45    0.172   243.52
2016.55    0.173   243.57
2016.65    0.173   243.63
2016.75    0.173   243.68
2016.85    0.173   243.74
2016.95    0.174   243.79
2017.05    0.174   243.85
2017.15    0.174   243.90
2017.25    0.174   243.96
2017.35    0.174   244.01
2017.45    0.175   244.07
2017.55    0.175   244.12
2017.65    0.175   244.17
2017.75    0.175   244.23
2017.85    0.175   244.28
2017.95    0.175   244.34
2018.05    0.175   244.39
2018.15    0.176   244.44
2018.25    0.176   244.50
2018.35    0.176   244.55
2018.45    0.176   244.60
2018.55    0.176   244.66
2018.65    0.176   244.71
2018.75    0.176   244.76
2018.85    0.176   244.82
2018.95    0.176   244.87
2019.05    0.176   244.92
2019.15    0.176   244.98
2019.25    0.176   245.03
2019.35    0.176   245.08
2019.45    0.176   245.13
2019.55    0.176   245.19
2019.65    0.176   245.24
2019.75    0.176   245.29
2019.85    0.176   245.35
2019.95    0.176   245.40
2020.05    0.176   245.45
2020.15    0.176   245.51
2020.25    0.176   245.56
2020.35    0.176   245.61
2020.45    0.176   245.67
2020.55    0.176   245.72
2020.65    0.175   245.77
2020.75    0.175   245.83
2020.85    0.175   245.88
2020.95    0.175   245.94
2021.05    0.175   245.99
2021.15    0.175   246.04
2021.25    0.175   246.10
2021.35    0.174   246.15
2021.45    0.174   246.21
2021.55    0.174   246.26
2021.65    0.174   246.32
2021.75    0.173   246.37
2021.85    0.173   246.42
2021.95    0.173   246.48
2022.05    0.173   246.54
2022.15    0.172   246.59
2022.25    0.172   246.65
2022.35    0.172   246.70
2022.45    0.172   246.76
2022.55    0.171   246.81
2022.65    0.171   246.87
2022.75    0.171   246.93
2022.85    0.170   246.98
2022.95    0.170   247.04
2023.05    0.169   247.10
2023.15    0.169   247.16
2023.25    0.169   247.21
2023.35    0.168   247.27
2023.45    0.168   247.33
2023.55    0.167   247.39
2023.65    0.167   247.45
2023.75    0.166   247.51
2023.85    0.166   247.57
2023.95    0.166   247.63
2024.05    0.165   247.69
2024.15    0.165   247.75
2024.25    0.164   247.81
2024.35    0.164   247.87
2024.45    0.163   247.93
2024.55    0.162   248.00
2024.65    0.162   248.06
2024.75    0.161   248.12
2024.85    0.161   248.18
2024.95    0.160   248.25
2025.05    0.160   248.31
2025.15    0.159   248.38
2025.25    0.158   248.44
2025.35    0.158   248.51
2025.45    0.157   248.58
2025.55    0.156   248.64
2025.65    0.156   248.71
2025.75    0.155   248.78
2025.85    0.154   248.85
2025.95    0.153   248.92
2026.05    0.153   248.99
2026.15    0.152   249.06
2026.25    0.151   249.13
2026.35    0.150   249.21
2026.45    0.150   249.28
2026.55    0.149   249.35
2026.65    0.148   249.43
2026.75    0.147   249.50
2026.85    0.146   249.58
2026.95    0.145   249.66
2027.05    0.145   249.74
2027.15    0.144   249.82
2027.25    0.143   249.90
2027.35    0.142   249.98
2027.45    0.141   250.06
2027.55    0.140   250.14
2027.65    0.139   250.23
2027.75    0.138   250.31
2027.85    0.137   250.40
2027.95    0.136   250.49
2028.05    0.135   250.58
2028.15    0.134   250.67
2028.25    0.133   250.76
2028.35    0.132   250.86
2028.45    0.131   250.95
2028.55    0.130   251.05
2028.65    0.129   251.15
2028.75    0.127   251.25
2028.85    0.126   251.35
2028.95    0.125   251.46
2029.05    0.124   251.56
2029.15    0.123   251.67
2029.25    0.122   251.78
2029.35    0.120   251.90
2029.45    0.119   252.01
2029.55    0.118   252.13
2029.65    0.117   252.25
2029.75    0.115   252.37
2029.85    0.114   252.50
2029.95    0.113   252.63
2030.05    0.111   252.76
2030.15    0.110   252.89
2030.25    0.109   253.03
2030.35    0.107   253.17
2030.45    0.106   253.32
2030.55    0.104   253.47
2030.65    0.103   253.62
2030.75    0.101   253.78
2030.85    0.100   253.94
2030.95    0.098   254.11
2031.05    0.097   254.28
2031.15    0.095   254.46
2031.25    0.094   254.65
2031.35    0.092   254.84
2031.45    0.091   255.03
2031.55    0.089   255.24
2031.65    0.088   255.45
2031.75    0.086   255.67
2031.85    0.084   255.90
2031.95    0.083   256.13
2032.05    0.081   256.38
2032.15    0.079   256.64
2032.25    0.078   256.91
2032.35    0.076   257.19
2032.45    0.074   257.48
2032.55    0.072   257.79
2032.65    0.071   258.11
2032.75    0.069   258.45
2032.85    0.067   258.81
2032.95    0.065   259.19
2033.05    0.063   259.59
2033.15    0.061   260.02
2033.25    0.060   260.47
2033.35    0.058   260.95
2033.45    0.056   261.46
2033.55    0.054   262.01
2033.65    0.052   262.60
2033.75    0.050   263.24
2033.85    0.048   263.93
2033.95    0.046   264.67
2034.05    0.044   265.49
2034.15    0.042   266.37
2034.25    0.040   267.35
2034.35    0.038   268.42
2034.45    0.036   269.62
2034.55    0.034   270.95
2034.65    0.032   272.44
2034.75    0.030   274.12
2034.85    0.028   276.04
2034.95    0.026   278.23
2035.05    0.025   280.76
2035.15    0.023   283.71
2035.25    0.021   287.16
2035.35    0.019   291.24
2035.45    0.018   296.07
2035.55    0.016   301.81
2035.65    0.015   308.59
2035.75    0.014   316.50
2035.85    0.013   325.46
2035.95    0.013   335.20
2036.05    0.013   345.24
2036.15    0.013   354.99
2036.25    0.014     3.96
2036.35    0.015    11.88
2036.45    0.016    18.68
2036.55    0.018    24.44
2036.65    0.019    29.29
2036.75    0.021    33.38
2036.85    0.023    36.85
2036.95    0.025    39.81
2037.05    0.026    42.37
2037.15    0.028    44.58
2037.25    0.030    46.52
2037.35    0.032    48.23
2037.45    0.034    49.74
2037.55    0.036    51.10
2037.65    0.038    52.32
2037.75    0.040    53.42
2037.85    0.041    54.43
2037.95    0.043    55.35
2038.05    0.045    56.20
2038.15    0.047    56.98
2038.25    0.049    57.71
2038.35    0.050    58.39
2038.45    0.052    59.02
2038.55    0.053    59.62
2038.65    0.055    60.18
2038.75    0.057    60.71
2038.85    0.058    61.21
2038.95    0.059    61.69
2039.05    0.061    62.14
2039.15    0.062    62.58
2039.25    0.063    63.00
2039.35    0.065    63.40
2039.45    0.066    63.79
2039.55    0.067    64.17
2039.65    0.068    64.53
2039.75    0.069    64.89
2039.85    0.070    65.23
2039.95    0.071    65.57
2040.05    0.071    65.89
2040.15    0.072    66.21
2040.25    0.073    66.53
2040.35    0.073    66.84
2040.45    0.074    67.14
2040.55    0.074    67.44
2040.65    0.075    67.74
2040.75    0.075    68.03
2040.85    0.076    68.32
2040.95    0.076    68.61
2041.05    0.076    68.89
2041.15    0.076    69.18
2041.25    0.076    69.46
2041.35    0.076    69.74
2041.45    0.076    70.03
2041.55    0.076    70.31
2041.65    0.076    70.59
2041.75    0.076    70.88
2041.85    0.076    71.16
2041.95    0.076    71.45
2042.05    0.076    71.74
2042.15    0.075    72.03
2042.25    0.075    72.32
2042.35    0.075    72.61
2042.45    0.074    72.91
2042.55    0.074    73.21
2042.65    0.073    73.52
2042.75    0.073    73.83
2042.85    0.072    74.15
2042.95    0.072    74.47
2043.05    0.071    74.79
2043.15    0.070    75.12
2043.25    0.070    75.46
2043.35    0.069    75.80
2043.45    0.068    76.15
2043.55    0.067    76.51
2043.65    0.067    76.88
2043.75    0.066    77.26
2043.85    0.065    77.64
2043.95    0.064    78.03
2044.05    0.063    78.44
2044.15    0.063    78.86
2044.25    0.062    79.28
2044.35    0.061    79.72
2044.45    0.060    80.18
2044.55    0.059    80.65
2044.65    0.058    81.13
2044.75    0.057    81.63
2044.85    0.056    82.15
2044.95    0.055    82.68
2045.05    0.054    83.24
2045.15    0.053    83.81
2045.25    0.052    84.41
2045.35    0.051    85.03
2045.45    0.050    85.68
2045.55    0.049    86.36
2045.65    0.048    87.06
2045.75    0.047    87.79
2045.85    0.046    88.56
2045.95    0.045    89.36
2046.05    0.044    90.21
2046.15    0.043    91.09
2046.25    0.042    92.02
2046.35    0.041    92.99
2046.45    0.040    94.02
2046.55    0.039    95.10
2046.65    0.038    96.24
2046.75    0.037    97.44
2046.85    0.036    98.71
2046.95    0.035   100.05
2047.05    0.034   101.48
2047.15    0.033   102.98
2047.25    0.032   104.58
2047.35    0.031   106.28
2047.45    0.030   108.07
2047.55    0.029   109.98
2047.65    0.028   112.01
2047.75    0.027   114.15
2047.85    0.027   116.43
2047.95    0.026   118.84
2048.05    0.025   121.38
2048.15    0.024   124.06
2048.25    0.024   126.88
2048.35    0.023   129.83
2048.45    0.023   132.92
2048.55    0.023   136.12
2048.65    0.022   139.43
2048.75    0.022   142.83
2048.85    0.022   146.29
2048.95    0.022   149.81
2049.05    0.022   153.34
2049.15    0.022   156.87
2049.25    0.022   160.37
2049.35    0.022   163.82
2049.45    0.022   167.19
2049.55    0.023   170.47
2049.65    0.023   173.63
2049.75    0.024   176.67
2049.85    0.024   179.58
2049.95    0.025   182.35
2050.05    0.025   184.98
2050.15    0.026   187.47
2050.25    0.027   189.83
2050.35    0.028   192.06
2050.45    0.028   194.16
2050.55    0.029   196.14
2050.65    0.030   198.00
2050.75    0.031   199.76






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 18:14:28



www.stella-vega.de