Double Star Calculator - Orbit

Orbital Elements for I879
WDS: I879 WDS ID/Discoverer
P: 39.000 Orbital period (years)
a: 0.2263 Semi-major axis (arcseconds)
i: 19.4 Inclination (degrees)
Ω: 327.8 Longitude of ascending node (degrees)
T: 2010.410 Epoch of periastron passage (year)
e: 0.853 Eccentricity
ω: 340.3 Longitude of periastron (degrees)
Start-Year: 2005.5 Year
End-Year: 2044.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I879
Position: 112100.40-542927.7 Epoch-2000 right ascension and declination
WDS-ID: 11210-5429 WDS designation
Discoverer Code: I879 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 98718 HD catalog number
Hipparcos number: 55425 Hipparcos catalog number
V1: 4.08 Magnitude of the primary
V2: 5.65 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 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: Tok2012b Reference

Double Star Orbit for I879



WDS 6th Orbit including measures of I879

-- 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 I879
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.407   124.49
--------------------------
2005.50    0.240   156.96
2005.60    0.237   157.37
2005.70    0.234   157.79
2005.80    0.231   158.22
2005.90    0.227   158.66
2006.00    0.224   159.12
2006.10    0.221   159.59
2006.20    0.218   160.07
2006.30    0.215   160.57
2006.40    0.211   161.08
2006.50    0.208   161.61
2006.60    0.205   162.16
2006.70    0.201   162.72
2006.80    0.198   163.31
2006.90    0.194   163.92
2007.00    0.190   164.55
2007.10    0.187   165.20
2007.20    0.183   165.89
2007.30    0.179   166.60
2007.40    0.175   167.34
2007.50    0.171   168.12
2007.60    0.167   168.93
2007.70    0.163   169.78
2007.80    0.159   170.68
2007.90    0.155   171.63
2008.00    0.150   172.63
2008.10    0.146   173.69
2008.20    0.141   174.82
2008.30    0.137   176.02
2008.40    0.132   177.30
2008.50    0.127   178.68
2008.60    0.123   180.17
2008.70    0.118   181.78
2008.80    0.113   183.54
2008.90    0.108   185.46
2009.00    0.102   187.58
2009.10    0.097   189.93
2009.20    0.091   192.56
2009.30    0.086   195.52
2009.40    0.080   198.91
2009.50    0.074   202.83
2009.60    0.068   207.41
2009.70    0.062   212.87
2009.80    0.056   219.47
2009.90    0.051   227.60
2010.00    0.045   237.78
2010.10    0.040   250.63
2010.20    0.036   266.69
2010.30    0.034   285.90
2010.40    0.033   307.01
2010.50    0.034   327.80
2010.60    0.037   346.36
2010.70    0.041     1.91
2010.80    0.045    14.55
2010.90    0.050    24.77
2011.00    0.056    33.09
2011.10    0.061    39.95
2011.20    0.066    45.70
2011.30    0.072    50.57
2011.40    0.077    54.76
2011.50    0.083    58.41
2011.60    0.088    61.62
2011.70    0.093    64.48
2011.80    0.098    67.03
2011.90    0.103    69.34
2012.00    0.108    71.43
2012.10    0.113    73.34
2012.20    0.117    75.10
2012.30    0.122    76.73
2012.40    0.127    78.23
2012.50    0.131    79.64
2012.60    0.135    80.95
2012.70    0.140    82.18
2012.80    0.144    83.33
2012.90    0.148    84.42
2013.00    0.152    85.46
2013.10    0.156    86.43
2013.20    0.160    87.36
2013.30    0.164    88.24
2013.40    0.168    89.09
2013.50    0.172    89.89
2013.60    0.176    90.66
2013.70    0.179    91.40
2013.80    0.183    92.11
2013.90    0.187    92.79
2014.00    0.190    93.45
2014.10    0.194    94.08
2014.20    0.197    94.69
2014.30    0.200    95.28
2014.40    0.204    95.85
2014.50    0.207    96.41
2014.60    0.210    96.94
2014.70    0.213    97.46
2014.80    0.217    97.96
2014.90    0.220    98.45
2015.00    0.223    98.93
2015.10    0.226    99.39
2015.20    0.229    99.84
2015.30    0.232   100.28
2015.40    0.235   100.71
2015.50    0.238   101.13
2015.60    0.240   101.53
2015.70    0.243   101.93
2015.80    0.246   102.32
2015.90    0.249   102.70
2016.00    0.251   103.07
2016.10    0.254   103.44
2016.20    0.257   103.79
2016.30    0.259   104.14
2016.40    0.262   104.49
2016.50    0.264   104.82
2016.60    0.267   105.15
2016.70    0.270   105.47
2016.80    0.272   105.79
2016.90    0.274   106.10
2017.00    0.277   106.41
2017.10    0.279   106.71
2017.20    0.282   107.01
2017.30    0.284   107.30
2017.40    0.286   107.59
2017.50    0.288   107.87
2017.60    0.291   108.14
2017.70    0.293   108.42
2017.80    0.295   108.69
2017.90    0.297   108.95
2018.00    0.299   109.21
2018.10    0.301   109.47
2018.20    0.303   109.73
2018.30    0.306   109.98
2018.40    0.308   110.23
2018.50    0.310   110.47
2018.60    0.312   110.71
2018.70    0.314   110.95
2018.80    0.315   111.18
2018.90    0.317   111.42
2019.00    0.319   111.65
2019.10    0.321   111.87
2019.20    0.323   112.10
2019.30    0.325   112.32
2019.40    0.327   112.54
2019.50    0.328   112.76
2019.60    0.330   112.97
2019.70    0.332   113.18
2019.80    0.334   113.39
2019.90    0.335   113.60
2020.00    0.337   113.81
2020.10    0.339   114.01
2020.20    0.340   114.21
2020.30    0.342   114.41
2020.40    0.343   114.61
2020.50    0.345   114.81
2020.60    0.347   115.00
2020.70    0.348   115.20
2020.80    0.350   115.39
2020.90    0.351   115.58
2021.00    0.353   115.76
2021.10    0.354   115.95
2021.20    0.356   116.14
2021.30    0.357   116.32
2021.40    0.358   116.50
2021.50    0.360   116.68
2021.60    0.361   116.86
2021.70    0.362   117.04
2021.80    0.364   117.21
2021.90    0.365   117.39
2022.00    0.366   117.56
2022.10    0.368   117.74
2022.20    0.369   117.91
2022.30    0.370   118.08
2022.40    0.371   118.25
2022.50    0.373   118.42
2022.60    0.374   118.58
2022.70    0.375   118.75
2022.80    0.376   118.91
2022.90    0.377   119.08
2023.00    0.378   119.24
2023.10    0.379   119.40
2023.20    0.380   119.57
2023.30    0.381   119.73
2023.40    0.383   119.89
2023.50    0.384   120.04
2023.60    0.385   120.20
2023.70    0.386   120.36
2023.80    0.387   120.51
2023.90    0.387   120.67
2024.00    0.388   120.82
2024.10    0.389   120.98
2024.20    0.390   121.13
2024.30    0.391   121.28
2024.40    0.392   121.44
2024.50    0.393   121.59
2024.60    0.394   121.74
2024.70    0.395   121.89
2024.80    0.395   122.04
2024.90    0.396   122.18
2025.00    0.397   122.33
2025.10    0.398   122.48
2025.20    0.399   122.63
2025.30    0.399   122.77
2025.40    0.400   122.92
2025.50    0.401   123.06
2025.60    0.401   123.21
2025.70    0.402   123.35
2025.80    0.403   123.50
2025.90    0.403   123.64
2026.00    0.404   123.78
2026.10    0.405   123.93
2026.20    0.405   124.07
2026.30    0.406   124.21
2026.40    0.406   124.35
2026.50    0.407   124.49
2026.60    0.407   124.63
2026.70    0.408   124.77
2026.80    0.408   124.91
2026.90    0.409   125.05
2027.00    0.409   125.19
2027.10    0.410   125.33
2027.20    0.410   125.47
2027.30    0.411   125.60
2027.40    0.411   125.74
2027.50    0.412   125.88
2027.60    0.412   126.02
2027.70    0.412   126.15
2027.80    0.413   126.29
2027.90    0.413   126.43
2028.00    0.413   126.56
2028.10    0.414   126.70
2028.20    0.414   126.84
2028.30    0.414   126.97
2028.40    0.414   127.11
2028.50    0.415   127.24
2028.60    0.415   127.38
2028.70    0.415   127.51
2028.80    0.415   127.65
2028.90    0.416   127.78
2029.00    0.416   127.92
2029.10    0.416   128.05
2029.20    0.416   128.19
2029.30    0.416   128.32
2029.40    0.416   128.45
2029.50    0.416   128.59
2029.60    0.417   128.72
2029.70    0.417   128.86
2029.80    0.417   128.99
2029.90    0.417   129.13
2030.00    0.417   129.26
2030.10    0.417   129.39
2030.20    0.417   129.53
2030.30    0.417   129.66
2030.40    0.417   129.80
2030.50    0.417   129.93
2030.60    0.417   130.06
2030.70    0.417   130.20
2030.80    0.416   130.33
2030.90    0.416   130.47
2031.00    0.416   130.60
2031.10    0.416   130.73
2031.20    0.416   130.87
2031.30    0.416   131.00
2031.40    0.416   131.14
2031.50    0.415   131.27
2031.60    0.415   131.41
2031.70    0.415   131.54
2031.80    0.415   131.68
2031.90    0.414   131.81
2032.00    0.414   131.95
2032.10    0.414   132.09
2032.20    0.414   132.22
2032.30    0.413   132.36
2032.40    0.413   132.49
2032.50    0.413   132.63
2032.60    0.412   132.77
2032.70    0.412   132.90
2032.80    0.412   133.04
2032.90    0.411   133.18
2033.00    0.411   133.32
2033.10    0.410   133.45
2033.20    0.410   133.59
2033.30    0.409   133.73
2033.40    0.409   133.87
2033.50    0.408   134.01
2033.60    0.408   134.15
2033.70    0.407   134.29
2033.80    0.407   134.43
2033.90    0.406   134.57
2034.00    0.406   134.71
2034.10    0.405   134.85
2034.20    0.405   135.00
2034.30    0.404   135.14
2034.40    0.403   135.28
2034.50    0.403   135.42
2034.60    0.402   135.57
2034.70    0.401   135.71
2034.80    0.401   135.86
2034.90    0.400   136.00
2035.00    0.399   136.15
2035.10    0.398   136.29
2035.20    0.398   136.44
2035.30    0.397   136.59
2035.40    0.396   136.74
2035.50    0.395   136.89
2035.60    0.394   137.03
2035.70    0.394   137.18
2035.80    0.393   137.33
2035.90    0.392   137.49
2036.00    0.391   137.64
2036.10    0.390   137.79
2036.20    0.389   137.94
2036.30    0.388   138.10
2036.40    0.387   138.25
2036.50    0.386   138.41
2036.60    0.385   138.56
2036.70    0.384   138.72
2036.80    0.383   138.88
2036.90    0.382   139.04
2037.00    0.381   139.20
2037.10    0.380   139.36
2037.20    0.379   139.52
2037.30    0.378   139.68
2037.40    0.377   139.85
2037.50    0.375   140.01
2037.60    0.374   140.18
2037.70    0.373   140.34
2037.80    0.372   140.51
2037.90    0.371   140.68
2038.00    0.369   140.85
2038.10    0.368   141.02
2038.20    0.367   141.19
2038.30    0.366   141.37
2038.40    0.364   141.54
2038.50    0.363   141.72
2038.60    0.362   141.90
2038.70    0.360   142.07
2038.80    0.359   142.25
2038.90    0.357   142.44
2039.00    0.356   142.62
2039.10    0.354   142.80
2039.20    0.353   142.99
2039.30    0.352   143.18
2039.40    0.350   143.37
2039.50    0.348   143.56
2039.60    0.347   143.75
2039.70    0.345   143.94
2039.80    0.344   144.14
2039.90    0.342   144.34
2040.00    0.340   144.54
2040.10    0.339   144.74
2040.20    0.337   144.94
2040.30    0.335   145.15
2040.40    0.334   145.36
2040.50    0.332   145.57
2040.60    0.330   145.78
2040.70    0.328   145.99
2040.80    0.326   146.21
2040.90    0.325   146.43
2041.00    0.323   146.65
2041.10    0.321   146.88
2041.20    0.319   147.11
2041.30    0.317   147.34
2041.40    0.315   147.57
2041.50    0.313   147.80
2041.60    0.311   148.04
2041.70    0.309   148.29
2041.80    0.307   148.53
2041.90    0.305   148.78
2042.00    0.303   149.03
2042.10    0.300   149.29
2042.20    0.298   149.55
2042.30    0.296   149.81
2042.40    0.294   150.08
2042.50    0.292   150.35
2042.60    0.289   150.63
2042.70    0.287   150.91
2042.80    0.285   151.19
2042.90    0.282   151.48
2043.00    0.280   151.78
2043.10    0.277   152.08
2043.20    0.275   152.38
2043.30    0.272   152.69
2043.40    0.270   153.01
2043.50    0.267   153.33
2043.60    0.265   153.66
2043.70    0.262   154.00
2043.80    0.259   154.34
2043.90    0.257   154.69
2044.00    0.254   155.04
2044.10    0.251   155.41
2044.20    0.248   155.78
2044.30    0.245   156.16
2044.40    0.243   156.56






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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 16:36:59



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