Double Star Calculator - Orbit

Orbital Elements for MCA1AA,AB
WDS: MCA1AA,AB WDS ID/Discoverer
P: 27.503 Orbital period (years)
a: 0.1594 Semi-major axis (arcseconds)
i: 110.7 Inclination (degrees)
Ω: 105.8 Longitude of ascending node (degrees)
T: 1989.000 Epoch of periastron passage (year)
e: 0.81 Eccentricity
ω: 14.4 Longitude of periastron (degrees)
Start-Year: 2011.2485 Year
End-Year: 2038.7515 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for MCA1AA,AB
Position: 003223.75+065719.6 Epoch-2000 right ascension and declination
WDS-ID: 00324+0657 WDS designation
Discoverer Code: MCA1AA,AB Discover designation and components
ADS number: 449 Aitken Double Star catalog
HD number: 2913 HD catalog number
Hipparcos number: 2548 Hipparcos catalog number
V1: 5.84 Magnitude of the primary
V2: 7.99 Magnitude of the secondary
Equinox: 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: Msn2023 Reference

Double Star Orbit for MCA1AA,AB



WDS 6th Orbit including measures of MCA1AA,AB

-- 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 MCA1AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.273   283.92
--------------------------
2011.25    0.167   269.76
2011.35    0.165   269.51
2011.45    0.162   269.25
2011.55    0.160   268.99
2011.65    0.157   268.71
2011.75    0.154   268.43
2011.85    0.151   268.13
2011.95    0.149   267.83
2012.05    0.146   267.51
2012.15    0.143   267.18
2012.25    0.140   266.83
2012.35    0.137   266.47
2012.45    0.134   266.09
2012.55    0.131   265.70
2012.65    0.128   265.29
2012.75    0.125   264.85
2012.85    0.121   264.40
2012.95    0.118   263.92
2013.05    0.115   263.41
2013.15    0.111   262.87
2013.25    0.108   262.30
2013.35    0.105   261.69
2013.45    0.101   261.04
2013.55    0.098   260.34
2013.65    0.094   259.59
2013.75    0.090   258.78
2013.85    0.087   257.90
2013.95    0.083   256.95
2014.05    0.079   255.90
2014.15    0.076   254.75
2014.25    0.072   253.47
2014.35    0.068   252.05
2014.45    0.064   250.46
2014.55    0.060   248.66
2014.65    0.056   246.60
2014.75    0.052   244.22
2014.85    0.048   241.45
2014.95    0.044   238.18
2015.05    0.040   234.27
2015.15    0.036   229.55
2015.25    0.033   223.76
2015.35    0.030   216.63
2015.45    0.027   207.86
2015.55    0.024   197.26
2015.65    0.023   185.00
2015.75    0.023   171.76
2015.85    0.023   158.63
2015.95    0.025   146.59
2016.05    0.027   136.09
2016.15    0.029   127.07
2016.25    0.030   119.19
2016.35    0.031   111.96
2016.45    0.031   104.78
2016.55    0.028    96.84
2016.65    0.024    86.89
2016.75    0.020    72.88
2016.85    0.017    52.10
2016.95    0.016    25.01
2017.05    0.018   359.79
2017.15    0.022   342.24
2017.25    0.028   331.01
2017.35    0.034   323.58
2017.45    0.040   318.38
2017.55    0.045   314.55
2017.65    0.051   311.60
2017.75    0.057   309.25
2017.85    0.063   307.33
2017.95    0.068   305.72
2018.05    0.074   304.35
2018.15    0.079   303.16
2018.25    0.084   302.12
2018.35    0.089   301.20
2018.45    0.094   300.37
2018.55    0.098   299.62
2018.65    0.103   298.94
2018.75    0.107   298.31
2018.85    0.112   297.74
2018.95    0.116   297.21
2019.05    0.120   296.72
2019.15    0.124   296.25
2019.25    0.128   295.82
2019.35    0.132   295.41
2019.45    0.136   295.03
2019.55    0.140   294.67
2019.65    0.143   294.32
2019.75    0.147   293.99
2019.85    0.150   293.68
2019.95    0.154   293.38
2020.05    0.157   293.10
2020.15    0.160   292.82
2020.25    0.163   292.56
2020.35    0.167   292.31
2020.45    0.170   292.06
2020.55    0.173   291.83
2020.65    0.176   291.60
2020.75    0.178   291.38
2020.85    0.181   291.17
2020.95    0.184   290.96
2021.05    0.187   290.76
2021.15    0.189   290.57
2021.25    0.192   290.38
2021.35    0.195   290.19
2021.45    0.197   290.01
2021.55    0.200   289.84
2021.65    0.202   289.67
2021.75    0.204   289.50
2021.85    0.207   289.33
2021.95    0.209   289.17
2022.05    0.211   289.02
2022.15    0.213   288.87
2022.25    0.215   288.72
2022.35    0.218   288.57
2022.45    0.220   288.42
2022.55    0.222   288.28
2022.65    0.224   288.14
2022.75    0.225   288.01
2022.85    0.227   287.87
2022.95    0.229   287.74
2023.05    0.231   287.61
2023.15    0.233   287.48
2023.25    0.234   287.35
2023.35    0.236   287.23
2023.45    0.238   287.11
2023.55    0.239   286.99
2023.65    0.241   286.87
2023.75    0.243   286.75
2023.85    0.244   286.63
2023.95    0.246   286.52
2024.05    0.247   286.40
2024.15    0.248   286.29
2024.25    0.250   286.18
2024.35    0.251   286.07
2024.45    0.253   285.96
2024.55    0.254   285.85
2024.65    0.255   285.75
2024.75    0.256   285.64
2024.85    0.257   285.54
2024.95    0.259   285.43
2025.05    0.260   285.33
2025.15    0.261   285.23
2025.25    0.262   285.13
2025.35    0.263   285.03
2025.45    0.264   284.93
2025.55    0.265   284.83
2025.65    0.266   284.73
2025.75    0.267   284.64
2025.85    0.268   284.54
2025.95    0.269   284.44
2026.05    0.269   284.35
2026.15    0.270   284.25
2026.25    0.271   284.16
2026.35    0.272   284.07
2026.45    0.272   283.97
2026.55    0.273   283.88
2026.65    0.274   283.79
2026.75    0.274   283.70
2026.85    0.275   283.60
2026.95    0.276   283.51
2027.05    0.276   283.42
2027.15    0.277   283.33
2027.25    0.277   283.24
2027.35    0.278   283.15
2027.45    0.278   283.06
2027.55    0.279   282.98
2027.65    0.279   282.89
2027.75    0.279   282.80
2027.85    0.280   282.71
2027.95    0.280   282.62
2028.05    0.280   282.53
2028.15    0.281   282.45
2028.25    0.281   282.36
2028.35    0.281   282.27
2028.45    0.281   282.18
2028.55    0.281   282.10
2028.65    0.282   282.01
2028.75    0.282   281.92
2028.85    0.282   281.84
2028.95    0.282   281.75
2029.05    0.282   281.66
2029.15    0.282   281.58
2029.25    0.282   281.49
2029.35    0.282   281.40
2029.45    0.282   281.32
2029.55    0.282   281.23
2029.65    0.282   281.14
2029.75    0.282   281.06
2029.85    0.281   280.97
2029.95    0.281   280.88
2030.05    0.281   280.79
2030.15    0.281   280.71
2030.25    0.281   280.62
2030.35    0.280   280.53
2030.45    0.280   280.44
2030.55    0.280   280.36
2030.65    0.279   280.27
2030.75    0.279   280.18
2030.85    0.279   280.09
2030.95    0.278   280.00
2031.05    0.278   279.91
2031.15    0.277   279.82
2031.25    0.277   279.73
2031.35    0.276   279.64
2031.45    0.276   279.55
2031.55    0.275   279.46
2031.65    0.275   279.37
2031.75    0.274   279.28
2031.85    0.273   279.19
2031.95    0.273   279.10
2032.05    0.272   279.00
2032.15    0.271   278.91
2032.25    0.271   278.82
2032.35    0.270   278.72
2032.45    0.269   278.63
2032.55    0.268   278.53
2032.65    0.268   278.43
2032.75    0.267   278.34
2032.85    0.266   278.24
2032.95    0.265   278.14
2033.05    0.264   278.04
2033.15    0.263   277.95
2033.25    0.262   277.85
2033.35    0.261   277.74
2033.45    0.260   277.64
2033.55    0.259   277.54
2033.65    0.258   277.44
2033.75    0.257   277.33
2033.85    0.256   277.23
2033.95    0.255   277.12
2034.05    0.254   277.02
2034.15    0.252   276.91
2034.25    0.251   276.80
2034.35    0.250   276.69
2034.45    0.249   276.58
2034.55    0.247   276.47
2034.65    0.246   276.35
2034.75    0.245   276.24
2034.85    0.243   276.12
2034.95    0.242   276.01
2035.05    0.240   275.89
2035.15    0.239   275.77
2035.25    0.238   275.65
2035.35    0.236   275.52
2035.45    0.235   275.40
2035.55    0.233   275.27
2035.65    0.231   275.15
2035.75    0.230   275.02
2035.85    0.228   274.88
2035.95    0.226   274.75
2036.05    0.225   274.62
2036.15    0.223   274.48
2036.25    0.221   274.34
2036.35    0.220   274.20
2036.45    0.218   274.05
2036.55    0.216   273.91
2036.65    0.214   273.76
2036.75    0.212   273.60
2036.85    0.210   273.45
2036.95    0.208   273.29
2037.05    0.206   273.13
2037.15    0.204   272.97
2037.25    0.202   272.80
2037.35    0.200   272.63
2037.45    0.198   272.46
2037.55    0.196   272.28
2037.65    0.194   272.10
2037.75    0.191   271.91
2037.85    0.189   271.72
2037.95    0.187   271.53
2038.05    0.185   271.33
2038.15    0.182   271.12
2038.25    0.180   270.91
2038.35    0.178   270.70
2038.45    0.175   270.47
2038.55    0.173   270.25
2038.65    0.170   270.01
2038.75    0.168   269.77






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 14:40:26



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