Double Star Calculator - Orbit

Orbital Elements for MLR87AB
WDS: MLR87AB WDS ID/Discoverer
P: 55.970 Orbital period (years)
a: 0.238 Semi-major axis (arcseconds)
i: 145.1 Inclination (degrees)
Ω: 139.7 Longitude of ascending node (degrees)
T: 2020.450 Epoch of periastron passage (year)
e: 0.513 Eccentricity
ω: 246.4 Longitude of periastron (degrees)
Start-Year: 1997.015 Year
End-Year: 2052.985 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for MLR87AB
Position: 010337.18+634116.0 Epoch-2000 right ascension and declination
WDS-ID: 01036+6341 WDS designation
Discoverer Code: MLR87AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 6129 HD catalog number
Hipparcos number: 4963 Hipparcos catalog number
V1: 8.68 Magnitude of the primary
V2: 9.51 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2003 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: USN2007b Reference

Double Star Orbit for MLR87AB



WDS 6th Orbit including measures of MLR87AB

-- 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 MLR87AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.185   153.11
--------------------------
1997.02    0.293    64.80
1997.12    0.292    64.51
1997.21    0.292    64.20
1997.31    0.292    63.90
1997.41    0.291    63.60
1997.51    0.291    63.30
1997.61    0.291    63.00
1997.71    0.290    62.69
1997.81    0.290    62.39
1997.91    0.289    62.08
1998.01    0.289    61.77
1998.11    0.288    61.47
1998.21    0.288    61.16
1998.31    0.288    60.85
1998.41    0.287    60.54
1998.51    0.287    60.23
1998.61    0.286    59.91
1998.71    0.286    59.60
1998.81    0.285    59.29
1998.91    0.285    58.97
1999.01    0.285    58.65
1999.11    0.284    58.34
1999.21    0.284    58.02
1999.31    0.283    57.70
1999.41    0.283    57.38
1999.51    0.282    57.06
1999.61    0.282    56.73
1999.71    0.281    56.41
1999.81    0.281    56.09
1999.91    0.280    55.76
2000.01    0.280    55.43
2000.11    0.279    55.11
2000.21    0.279    54.78
2000.31    0.278    54.45
2000.41    0.278    54.12
2000.51    0.278    53.78
2000.61    0.277    53.45
2000.71    0.277    53.11
2000.81    0.276    52.78
2000.91    0.276    52.44
2001.01    0.275    52.10
2001.11    0.275    51.76
2001.21    0.274    51.42
2001.31    0.273    51.08
2001.41    0.273    50.74
2001.51    0.272    50.39
2001.61    0.272    50.05
2001.71    0.271    49.70
2001.81    0.271    49.35
2001.91    0.270    49.00
2002.01    0.270    48.65
2002.11    0.269    48.29
2002.21    0.269    47.94
2002.31    0.268    47.58
2002.41    0.268    47.23
2002.51    0.267    46.87
2002.61    0.267    46.51
2002.71    0.266    46.15
2002.81    0.265    45.78
2002.91    0.265    45.42
2003.01    0.264    45.05
2003.11    0.264    44.68
2003.21    0.263    44.31
2003.31    0.263    43.94
2003.41    0.262    43.57
2003.51    0.262    43.20
2003.61    0.261    42.82
2003.71    0.260    42.44
2003.81    0.260    42.07
2003.91    0.259    41.68
2004.01    0.259    41.30
2004.11    0.258    40.92
2004.21    0.257    40.53
2004.31    0.257    40.14
2004.41    0.256    39.75
2004.51    0.256    39.36
2004.61    0.255    38.97
2004.71    0.255    38.57
2004.81    0.254    38.18
2004.91    0.253    37.78
2005.01    0.253    37.38
2005.11    0.252    36.98
2005.21    0.251    36.57
2005.31    0.251    36.16
2005.41    0.250    35.76
2005.51    0.250    35.34
2005.61    0.249    34.93
2005.71    0.248    34.52
2005.81    0.248    34.10
2005.91    0.247    33.68
2006.01    0.246    33.26
2006.11    0.246    32.84
2006.21    0.245    32.41
2006.31    0.245    31.98
2006.41    0.244    31.55
2006.51    0.243    31.12
2006.61    0.243    30.69
2006.71    0.242    30.25
2006.81    0.241    29.81
2006.91    0.241    29.37
2007.01    0.240    28.92
2007.11    0.239    28.48
2007.21    0.239    28.03
2007.31    0.238    27.58
2007.41    0.237    27.12
2007.51    0.237    26.66
2007.61    0.236    26.20
2007.71    0.235    25.74
2007.81    0.235    25.28
2007.91    0.234    24.81
2008.01    0.233    24.34
2008.11    0.232    23.87
2008.21    0.232    23.39
2008.31    0.231    22.91
2008.41    0.230    22.43
2008.51    0.230    21.94
2008.61    0.229    21.46
2008.71    0.228    20.97
2008.81    0.228    20.47
2008.91    0.227    19.97
2009.01    0.226    19.47
2009.11    0.225    18.97
2009.21    0.225    18.46
2009.31    0.224    17.95
2009.41    0.223    17.44
2009.51    0.222    16.92
2009.61    0.222    16.40
2009.71    0.221    15.88
2009.81    0.220    15.35
2009.91    0.219    14.82
2010.01    0.219    14.29
2010.11    0.218    13.75
2010.21    0.217    13.20
2010.31    0.216    12.66
2010.41    0.216    12.11
2010.51    0.215    11.55
2010.61    0.214    10.99
2010.71    0.213    10.43
2010.81    0.212     9.87
2010.91    0.212     9.29
2011.01    0.211     8.72
2011.11    0.210     8.14
2011.21    0.209     7.56
2011.31    0.208     6.97
2011.41    0.207     6.37
2011.51    0.207     5.77
2011.61    0.206     5.17
2011.71    0.205     4.56
2011.81    0.204     3.95
2011.91    0.203     3.33
2012.01    0.202     2.71
2012.11    0.201     2.08
2012.21    0.201     1.44
2012.31    0.200     0.80
2012.41    0.199     0.16
2012.51    0.198   359.50
2012.61    0.197   358.85
2012.71    0.196   358.18
2012.81    0.195   357.51
2012.91    0.194   356.84
2013.01    0.193   356.15
2013.11    0.192   355.46
2013.21    0.191   354.77
2013.31    0.190   354.06
2013.41    0.189   353.35
2013.51    0.189   352.64
2013.61    0.188   351.91
2013.71    0.187   351.18
2013.81    0.186   350.44
2013.91    0.185   349.69
2014.01    0.183   348.93
2014.11    0.182   348.16
2014.21    0.181   347.39
2014.31    0.180   346.60
2014.41    0.179   345.81
2014.51    0.178   345.01
2014.61    0.177   344.19
2014.71    0.176   343.37
2014.81    0.175   342.54
2014.91    0.174   341.69
2015.01    0.173   340.84
2015.11    0.171   339.97
2015.21    0.170   339.09
2015.31    0.169   338.20
2015.41    0.168   337.30
2015.51    0.167   336.38
2015.61    0.165   335.45
2015.71    0.164   334.51
2015.81    0.163   333.55
2015.91    0.162   332.58
2016.01    0.160   331.59
2016.11    0.159   330.58
2016.21    0.158   329.56
2016.31    0.156   328.52
2016.41    0.155   327.47
2016.51    0.154   326.39
2016.61    0.152   325.30
2016.71    0.151   324.18
2016.81    0.150   323.04
2016.91    0.148   321.89
2017.01    0.147   320.71
2017.11    0.145   319.50
2017.21    0.144   318.28
2017.31    0.142   317.02
2017.41    0.141   315.74
2017.51    0.139   314.43
2017.61    0.138   313.10
2017.71    0.136   311.73
2017.81    0.135   310.33
2017.91    0.133   308.90
2018.01    0.132   307.43
2018.11    0.130   305.93
2018.21    0.128   304.39
2018.31    0.127   302.82
2018.41    0.125   301.20
2018.51    0.124   299.54
2018.61    0.122   297.84
2018.71    0.120   296.10
2018.81    0.119   294.31
2018.91    0.117   292.47
2019.01    0.116   290.58
2019.11    0.114   288.64
2019.21    0.113   286.65
2019.31    0.111   284.61
2019.41    0.110   282.52
2019.51    0.109   280.37
2019.61    0.107   278.16
2019.71    0.106   275.90
2019.81    0.105   273.59
2019.91    0.104   271.22
2020.01    0.102   268.81
2020.11    0.101   266.34
2020.21    0.101   263.82
2020.31    0.100   261.26
2020.41    0.099   258.66
2020.51    0.098   256.03
2020.61    0.098   253.35
2020.71    0.097   250.66
2020.81    0.097   247.94
2020.91    0.097   245.21
2021.01    0.097   242.46
2021.11    0.097   239.72
2021.21    0.097   236.98
2021.31    0.097   234.25
2021.41    0.098   231.54
2021.51    0.098   228.86
2021.61    0.099   226.20
2021.71    0.099   223.59
2021.81    0.100   221.01
2021.91    0.101   218.48
2022.01    0.102   216.00
2022.11    0.103   213.57
2022.21    0.105   211.19
2022.31    0.106   208.87
2022.41    0.107   206.61
2022.51    0.109   204.41
2022.61    0.110   202.27
2022.71    0.112   200.20
2022.81    0.114   198.18
2022.91    0.115   196.21
2023.01    0.117   194.31
2023.11    0.119   192.47
2023.21    0.121   190.68
2023.31    0.123   188.94
2023.41    0.124   187.26
2023.51    0.126   185.63
2023.61    0.128   184.05
2023.71    0.130   182.52
2023.81    0.132   181.03
2023.91    0.134   179.58
2024.01    0.136   178.18
2024.11    0.138   176.83
2024.21    0.140   175.51
2024.31    0.142   174.22
2024.41    0.145   172.98
2024.51    0.147   171.77
2024.61    0.149   170.59
2024.71    0.151   169.44
2024.81    0.153   168.33
2024.91    0.155   167.24
2025.01    0.157   166.18
2025.11    0.159   165.15
2025.21    0.161   164.15
2025.31    0.163   163.17
2025.41    0.165   162.21
2025.51    0.167   161.27
2025.61    0.169   160.36
2025.71    0.171   159.47
2025.81    0.173   158.60
2025.91    0.174   157.75
2026.01    0.176   156.91
2026.11    0.178   156.10
2026.21    0.180   155.30
2026.31    0.182   154.51
2026.41    0.184   153.75
2026.51    0.186   153.00
2026.61    0.187   152.26
2026.71    0.189   151.53
2026.81    0.191   150.83
2026.91    0.193   150.13
2027.01    0.195   149.44
2027.11    0.196   148.77
2027.21    0.198   148.11
2027.31    0.200   147.46
2027.41    0.201   146.83
2027.51    0.203   146.20
2027.61    0.205   145.58
2027.71    0.206   144.97
2027.81    0.208   144.37
2027.91    0.209   143.79
2028.01    0.211   143.21
2028.11    0.213   142.63
2028.21    0.214   142.07
2028.31    0.216   141.51
2028.41    0.217   140.97
2028.51    0.219   140.43
2028.61    0.220   139.89
2028.71    0.222   139.37
2028.81    0.223   138.85
2028.91    0.224   138.34
2029.01    0.226   137.83
2029.11    0.227   137.33
2029.21    0.229   136.84
2029.31    0.230   136.35
2029.41    0.231   135.87
2029.51    0.233   135.39
2029.61    0.234   134.92
2029.71    0.235   134.46
2029.81    0.237   134.00
2029.91    0.238   133.54
2030.01    0.239   133.09
2030.11    0.240   132.64
2030.21    0.242   132.20
2030.31    0.243   131.76
2030.41    0.244   131.33
2030.51    0.245   130.90
2030.61    0.246   130.48
2030.71    0.248   130.06
2030.81    0.249   129.64
2030.91    0.250   129.23
2031.01    0.251   128.82
2031.11    0.252   128.41
2031.21    0.253   128.01
2031.31    0.254   127.61
2031.41    0.255   127.22
2031.51    0.256   126.83
2031.61    0.257   126.44
2031.71    0.258   126.05
2031.81    0.259   125.67
2031.91    0.260   125.29
2032.01    0.261   124.91
2032.11    0.262   124.54
2032.21    0.263   124.17
2032.31    0.264   123.80
2032.41    0.265   123.43
2032.51    0.266   123.07
2032.61    0.267   122.71
2032.71    0.268   122.35
2032.81    0.269   122.00
2032.91    0.270   121.64
2033.01    0.271   121.29
2033.11    0.271   120.94
2033.21    0.272   120.59
2033.31    0.273   120.25
2033.41    0.274   119.91
2033.51    0.275   119.57
2033.61    0.276   119.23
2033.71    0.276   118.89
2033.81    0.277   118.55
2033.91    0.278   118.22
2034.01    0.279   117.89
2034.11    0.279   117.56
2034.21    0.280   117.23
2034.31    0.281   116.91
2034.41    0.282   116.58
2034.51    0.282   116.26
2034.61    0.283   115.94
2034.71    0.284   115.62
2034.81    0.284   115.30
2034.91    0.285   114.98
2035.01    0.286   114.67
2035.11    0.286   114.36
2035.21    0.287   114.04
2035.31    0.287   113.73
2035.41    0.288   113.42
2035.51    0.289   113.11
2035.61    0.289   112.81
2035.71    0.290   112.50
2035.81    0.290   112.20
2035.91    0.291   111.89
2036.01    0.292   111.59
2036.11    0.292   111.29
2036.21    0.293   110.99
2036.31    0.293   110.69
2036.41    0.294   110.39
2036.51    0.294   110.10
2036.61    0.295   109.80
2036.71    0.295   109.51
2036.81    0.296   109.21
2036.91    0.296   108.92
2037.01    0.297   108.63
2037.11    0.297   108.34
2037.21    0.298   108.05
2037.31    0.298   107.76
2037.41    0.298   107.47
2037.51    0.299   107.18
2037.61    0.299   106.89
2037.71    0.300   106.61
2037.81    0.300   106.32
2037.91    0.301   106.04
2038.01    0.301   105.76
2038.11    0.301   105.47
2038.21    0.302   105.19
2038.31    0.302   104.91
2038.41    0.302   104.63
2038.51    0.303   104.35
2038.61    0.303   104.07
2038.71    0.303   103.79
2038.81    0.304   103.51
2038.91    0.304   103.23
2039.01    0.304   102.96
2039.11    0.305   102.68
2039.21    0.305   102.40
2039.31    0.305   102.13
2039.41    0.306   101.85
2039.51    0.306   101.58
2039.61    0.306   101.30
2039.71    0.306   101.03
2039.81    0.307   100.76
2039.91    0.307   100.49
2040.01    0.307   100.21
2040.11    0.307    99.94
2040.21    0.308    99.67
2040.31    0.308    99.40
2040.41    0.308    99.13
2040.51    0.308    98.86
2040.61    0.308    98.59
2040.71    0.309    98.32
2040.81    0.309    98.05
2040.91    0.309    97.78
2041.01    0.309    97.51
2041.11    0.309    97.25
2041.21    0.310    96.98
2041.31    0.310    96.71
2041.41    0.310    96.44
2041.51    0.310    96.18
2041.61    0.310    95.91
2041.71    0.310    95.64
2041.81    0.310    95.38
2041.91    0.310    95.11
2042.01    0.311    94.84
2042.11    0.311    94.58
2042.21    0.311    94.31
2042.31    0.311    94.05
2042.41    0.311    93.78
2042.51    0.311    93.52
2042.61    0.311    93.25
2042.71    0.311    92.99
2042.81    0.311    92.72
2042.91    0.311    92.46
2043.01    0.311    92.19
2043.11    0.311    91.93
2043.21    0.311    91.66
2043.31    0.312    91.40
2043.41    0.312    91.13
2043.51    0.312    90.87
2043.61    0.312    90.61
2043.71    0.312    90.34
2043.81    0.312    90.08
2043.91    0.312    89.81
2044.01    0.312    89.55
2044.11    0.312    89.29
2044.21    0.312    89.02
2044.31    0.312    88.76
2044.41    0.312    88.49
2044.51    0.312    88.23
2044.61    0.312    87.96
2044.71    0.311    87.70
2044.81    0.311    87.44
2044.91    0.311    87.17
2045.01    0.311    86.91
2045.11    0.311    86.64
2045.21    0.311    86.38
2045.31    0.311    86.11
2045.41    0.311    85.85
2045.51    0.311    85.58
2045.61    0.311    85.32
2045.71    0.311    85.05
2045.81    0.311    84.79
2045.91    0.311    84.52
2046.01    0.311    84.25
2046.11    0.310    83.99
2046.21    0.310    83.72
2046.31    0.310    83.45
2046.41    0.310    83.19
2046.51    0.310    82.92
2046.61    0.310    82.65
2046.71    0.310    82.39
2046.81    0.310    82.12
2046.91    0.309    81.85
2047.01    0.309    81.58
2047.11    0.309    81.31
2047.21    0.309    81.05
2047.31    0.309    80.78
2047.41    0.309    80.51
2047.51    0.308    80.24
2047.61    0.308    79.97
2047.71    0.308    79.70
2047.81    0.308    79.43
2047.91    0.308    79.16
2048.01    0.307    78.89
2048.11    0.307    78.61
2048.21    0.307    78.34
2048.31    0.307    78.07
2048.41    0.307    77.80
2048.51    0.306    77.53
2048.61    0.306    77.25
2048.71    0.306    76.98
2048.81    0.306    76.70
2048.91    0.306    76.43
2049.01    0.305    76.16
2049.11    0.305    75.88
2049.21    0.305    75.60
2049.31    0.305    75.33
2049.41    0.304    75.05
2049.51    0.304    74.77
2049.61    0.304    74.50
2049.71    0.304    74.22
2049.81    0.303    73.94
2049.91    0.303    73.66
2050.01    0.303    73.38
2050.11    0.302    73.10
2050.21    0.302    72.82
2050.31    0.302    72.54
2050.41    0.302    72.26
2050.51    0.301    71.97
2050.61    0.301    71.69
2050.71    0.301    71.41
2050.81    0.300    71.12
2050.91    0.300    70.84
2051.01    0.300    70.56
2051.11    0.299    70.27
2051.21    0.299    69.98
2051.31    0.299    69.70
2051.41    0.298    69.41
2051.51    0.298    69.12
2051.61    0.298    68.83
2051.71    0.297    68.54
2051.81    0.297    68.25
2051.91    0.297    67.96
2052.01    0.296    67.67
2052.11    0.296    67.38
2052.21    0.296    67.08
2052.31    0.295    66.79
2052.41    0.295    66.50
2052.51    0.295    66.20
2052.61    0.294    65.91
2052.71    0.294    65.61
2052.81    0.294    65.31
2052.91    0.293    65.01






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 14:46:55



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