Double Star Calculator - Orbit

Orbital Elements for HDS2665
WDS: HDS2665 WDS ID/Discoverer
P: 42.030 Orbital period (years)
a: 0.4964 Semi-major axis (arcseconds)
i: 57.2 Inclination (degrees)
Ω: 42.8 Longitude of ascending node (degrees)
T: 2023.906 Epoch of periastron passage (year)
e: 0.313 Eccentricity
ω: 178.6 Longitude of periastron (degrees)
Start-Year: 2003.985 Year
End-Year: 2046.015 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS2665
Position: 184801.45-100844.7 Epoch-2000 right ascension and declination
WDS-ID: 18480-1009 WDS designation
Discoverer Code: HDS2665 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 173872 HD catalog number
Hipparcos number: 92250 Hipparcos catalog number
V1: 8.64 Magnitude of the primary
V2: 11.83 Magnitude of the secondary
Equinox: Equinox
Date: 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: Tok2024c Reference

Double Star Orbit for HDS2665



WDS 6th Orbit including measures of HDS2665

-- 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 HDS2665
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.303   248.30
--------------------------
2003.98    0.650    44.84
2004.08    0.649    45.10
2004.18    0.649    45.36
2004.28    0.648    45.62
2004.38    0.647    45.88
2004.48    0.647    46.14
2004.58    0.646    46.40
2004.68    0.645    46.66
2004.78    0.644    46.92
2004.88    0.643    47.18
2004.98    0.642    47.44
2005.08    0.641    47.71
2005.18    0.640    47.97
2005.28    0.639    48.24
2005.38    0.638    48.50
2005.48    0.637    48.77
2005.58    0.635    49.04
2005.68    0.634    49.31
2005.78    0.633    49.58
2005.88    0.631    49.85
2005.98    0.630    50.12
2006.08    0.628    50.40
2006.18    0.627    50.67
2006.28    0.625    50.95
2006.38    0.624    51.23
2006.48    0.622    51.51
2006.58    0.620    51.79
2006.68    0.618    52.07
2006.78    0.616    52.36
2006.88    0.614    52.64
2006.98    0.612    52.93
2007.08    0.610    53.22
2007.18    0.608    53.52
2007.28    0.606    53.81
2007.38    0.604    54.11
2007.48    0.602    54.41
2007.58    0.600    54.71
2007.68    0.597    55.01
2007.78    0.595    55.32
2007.88    0.593    55.62
2007.98    0.590    55.93
2008.08    0.588    56.25
2008.18    0.585    56.56
2008.28    0.582    56.88
2008.38    0.580    57.20
2008.48    0.577    57.53
2008.58    0.574    57.86
2008.68    0.572    58.19
2008.78    0.569    58.52
2008.88    0.566    58.86
2008.98    0.563    59.20
2009.08    0.560    59.54
2009.18    0.557    59.89
2009.28    0.554    60.24
2009.38    0.551    60.60
2009.48    0.547    60.96
2009.58    0.544    61.32
2009.68    0.541    61.69
2009.78    0.538    62.07
2009.88    0.534    62.44
2009.98    0.531    62.83
2010.08    0.528    63.22
2010.18    0.524    63.61
2010.28    0.521    64.01
2010.38    0.517    64.41
2010.48    0.513    64.82
2010.58    0.510    65.23
2010.68    0.506    65.65
2010.78    0.502    66.08
2010.88    0.499    66.51
2010.98    0.495    66.95
2011.08    0.491    67.40
2011.18    0.487    67.86
2011.28    0.483    68.32
2011.38    0.479    68.79
2011.48    0.475    69.26
2011.58    0.471    69.75
2011.68    0.467    70.24
2011.78    0.463    70.74
2011.88    0.459    71.25
2011.98    0.455    71.77
2012.08    0.451    72.30
2012.18    0.447    72.84
2012.28    0.442    73.39
2012.38    0.438    73.95
2012.48    0.434    74.52
2012.58    0.430    75.10
2012.68    0.425    75.70
2012.78    0.421    76.30
2012.88    0.417    76.92
2012.98    0.412    77.55
2013.08    0.408    78.20
2013.18    0.404    78.86
2013.28    0.399    79.53
2013.38    0.395    80.22
2013.48    0.390    80.93
2013.58    0.386    81.65
2013.68    0.381    82.39
2013.78    0.377    83.14
2013.88    0.372    83.92
2013.98    0.368    84.71
2014.08    0.364    85.52
2014.18    0.359    86.35
2014.28    0.355    87.21
2014.38    0.350    88.08
2014.48    0.346    88.98
2014.58    0.341    89.89
2014.68    0.337    90.84
2014.78    0.333    91.81
2014.88    0.329    92.80
2014.98    0.324    93.82
2015.08    0.320    94.86
2015.18    0.316    95.94
2015.28    0.312    97.04
2015.38    0.308    98.18
2015.48    0.304    99.34
2015.58    0.300   100.53
2015.68    0.296   101.76
2015.78    0.292   103.02
2015.88    0.288   104.31
2015.98    0.284   105.63
2016.08    0.281   106.99
2016.18    0.277   108.39
2016.28    0.274   109.82
2016.38    0.271   111.28
2016.48    0.267   112.78
2016.58    0.264   114.32
2016.68    0.261   115.89
2016.78    0.259   117.49
2016.88    0.256   119.13
2016.98    0.253   120.81
2017.08    0.251   122.51
2017.18    0.249   124.25
2017.28    0.247   126.02
2017.38    0.245   127.81
2017.48    0.243   129.64
2017.58    0.242   131.48
2017.68    0.240   133.35
2017.78    0.239   135.24
2017.88    0.238   137.15
2017.98    0.237   139.07
2018.08    0.237   141.00
2018.18    0.236   142.94
2018.28    0.236   144.89
2018.38    0.236   146.84
2018.48    0.236   148.79
2018.58    0.237   150.73
2018.68    0.237   152.67
2018.78    0.238   154.59
2018.88    0.239   156.51
2018.98    0.240   158.40
2019.08    0.241   160.29
2019.18    0.242   162.14
2019.28    0.244   163.98
2019.38    0.246   165.80
2019.48    0.247   167.58
2019.58    0.249   169.34
2019.68    0.251   171.08
2019.78    0.254   172.78
2019.88    0.256   174.45
2019.98    0.258   176.10
2020.08    0.261   177.71
2020.18    0.263   179.29
2020.28    0.266   180.84
2020.38    0.269   182.36
2020.48    0.271   183.84
2020.58    0.274   185.30
2020.68    0.277   186.73
2020.78    0.280   188.13
2020.88    0.283   189.50
2020.98    0.286   190.85
2021.08    0.289   192.16
2021.18    0.292   193.45
2021.28    0.294   194.72
2021.38    0.297   195.96
2021.48    0.300   197.18
2021.58    0.303   198.37
2021.68    0.305   199.55
2021.78    0.308   200.70
2021.88    0.311   201.83
2021.98    0.313   202.95
2022.08    0.316   204.05
2022.18    0.318   205.13
2022.28    0.320   206.19
2022.38    0.323   207.25
2022.48    0.325   208.28
2022.58    0.327   209.31
2022.68    0.328   210.32
2022.78    0.330   211.32
2022.88    0.332   212.31
2022.98    0.333   213.29
2023.08    0.335   214.27
2023.18    0.336   215.23
2023.28    0.337   216.19
2023.38    0.338   217.14
2023.48    0.339   218.09
2023.58    0.340   219.03
2023.68    0.340   219.97
2023.78    0.341   220.91
2023.88    0.341   221.85
2023.98    0.341   222.78
2024.08    0.341   223.71
2024.18    0.341   224.65
2024.28    0.341   225.58
2024.38    0.340   226.52
2024.48    0.340   227.46
2024.58    0.339   228.40
2024.68    0.338   229.35
2024.78    0.337   230.30
2024.88    0.336   231.26
2024.98    0.335   232.23
2025.08    0.333   233.20
2025.18    0.332   234.19
2025.28    0.330   235.18
2025.38    0.328   236.18
2025.48    0.327   237.19
2025.58    0.325   238.22
2025.68    0.323   239.25
2025.78    0.320   240.31
2025.88    0.318   241.37
2025.98    0.316   242.45
2026.08    0.313   243.55
2026.18    0.311   244.66
2026.28    0.308   245.80
2026.38    0.306   246.95
2026.48    0.303   248.12
2026.58    0.300   249.31
2026.68    0.298   250.52
2026.78    0.295   251.76
2026.88    0.292   253.02
2026.98    0.289   254.30
2027.08    0.287   255.61
2027.18    0.284   256.94
2027.28    0.281   258.31
2027.38    0.278   259.69
2027.48    0.276   261.11
2027.58    0.273   262.55
2027.68    0.270   264.02
2027.78    0.268   265.52
2027.88    0.265   267.05
2027.98    0.263   268.61
2028.08    0.260   270.20
2028.18    0.258   271.81
2028.28    0.256   273.46
2028.38    0.254   275.13
2028.48    0.252   276.83
2028.58    0.250   278.55
2028.68    0.248   280.30
2028.78    0.247   282.07
2028.88    0.245   283.87
2028.98    0.244   285.68
2029.08    0.243   287.51
2029.18    0.242   289.36
2029.28    0.241   291.22
2029.38    0.240   293.10
2029.48    0.240   294.98
2029.58    0.240   296.87
2029.68    0.240   298.76
2029.78    0.240   300.65
2029.88    0.240   302.54
2029.98    0.240   304.43
2030.08    0.241   306.31
2030.18    0.242   308.17
2030.28    0.243   310.02
2030.38    0.244   311.86
2030.48    0.245   313.68
2030.58    0.247   315.48
2030.68    0.248   317.25
2030.78    0.250   319.00
2030.88    0.252   320.72
2030.98    0.254   322.42
2031.08    0.256   324.08
2031.18    0.259   325.72
2031.28    0.261   327.32
2031.38    0.264   328.89
2031.48    0.267   330.43
2031.58    0.270   331.94
2031.68    0.273   333.41
2031.78    0.276   334.85
2031.88    0.279   336.26
2031.98    0.283   337.63
2032.08    0.286   338.97
2032.18    0.290   340.28
2032.28    0.294   341.56
2032.38    0.297   342.80
2032.48    0.301   344.02
2032.58    0.305   345.20
2032.68    0.309   346.35
2032.78    0.313   347.48
2032.88    0.317   348.57
2032.98    0.321   349.64
2033.08    0.325   350.68
2033.18    0.329   351.70
2033.28    0.333   352.69
2033.38    0.338   353.65
2033.48    0.342   354.59
2033.58    0.346   355.51
2033.68    0.350   356.41
2033.78    0.355   357.28
2033.88    0.359   358.13
2033.98    0.363   358.97
2034.08    0.368   359.78
2034.18    0.372     0.57
2034.28    0.376     1.35
2034.38    0.381     2.11
2034.48    0.385     2.85
2034.58    0.389     3.57
2034.68    0.394     4.28
2034.78    0.398     4.97
2034.88    0.402     5.65
2034.98    0.407     6.31
2035.08    0.411     6.96
2035.18    0.415     7.60
2035.28    0.420     8.22
2035.38    0.424     8.83
2035.48    0.428     9.43
2035.58    0.432    10.02
2035.68    0.437    10.59
2035.78    0.441    11.16
2035.88    0.445    11.71
2035.98    0.449    12.25
2036.08    0.453    12.79
2036.18    0.457    13.31
2036.28    0.461    13.82
2036.38    0.465    14.33
2036.48    0.469    14.83
2036.58    0.473    15.31
2036.68    0.477    15.80
2036.78    0.481    16.27
2036.88    0.485    16.73
2036.98    0.489    17.19
2037.08    0.493    17.64
2037.18    0.496    18.09
2037.28    0.500    18.52
2037.38    0.504    18.95
2037.48    0.508    19.38
2037.58    0.511    19.80
2037.68    0.515    20.21
2037.78    0.518    20.62
2037.88    0.522    21.02
2037.98    0.525    21.41
2038.08    0.529    21.81
2038.18    0.532    22.19
2038.28    0.535    22.57
2038.38    0.539    22.95
2038.48    0.542    23.32
2038.58    0.545    23.69
2038.68    0.548    24.05
2038.78    0.551    24.41
2038.88    0.555    24.77
2038.98    0.558    25.12
2039.08    0.561    25.46
2039.18    0.563    25.81
2039.28    0.566    26.15
2039.38    0.569    26.49
2039.48    0.572    26.82
2039.58    0.575    27.15
2039.68    0.578    27.48
2039.78    0.580    27.80
2039.88    0.583    28.12
2039.98    0.585    28.44
2040.08    0.588    28.76
2040.18    0.590    29.07
2040.28    0.593    29.38
2040.38    0.595    29.69
2040.48    0.598    29.99
2040.58    0.600    30.29
2040.68    0.602    30.59
2040.78    0.604    30.89
2040.88    0.606    31.19
2040.98    0.609    31.48
2041.08    0.611    31.78
2041.18    0.613    32.07
2041.28    0.615    32.35
2041.38    0.617    32.64
2041.48    0.618    32.93
2041.58    0.620    33.21
2041.68    0.622    33.49
2041.78    0.624    33.77
2041.88    0.625    34.05
2041.98    0.627    34.33
2042.08    0.628    34.60
2042.18    0.630    34.88
2042.28    0.631    35.15
2042.38    0.633    35.42
2042.48    0.634    35.69
2042.58    0.636    35.96
2042.68    0.637    36.23
2042.78    0.638    36.50
2042.88    0.639    36.76
2042.98    0.640    37.03
2043.08    0.641    37.29
2043.18    0.642    37.56
2043.28    0.643    37.82
2043.38    0.644    38.08
2043.48    0.645    38.34
2043.58    0.646    38.60
2043.68    0.647    38.86
2043.78    0.647    39.12
2043.88    0.648    39.38
2043.98    0.649    39.64
2044.08    0.649    39.90
2044.18    0.650    40.15
2044.28    0.650    40.41
2044.38    0.650    40.67
2044.48    0.651    40.93
2044.58    0.651    41.18
2044.68    0.651    41.44
2044.78    0.651    41.69
2044.88    0.652    41.95
2044.98    0.652    42.21
2045.08    0.652    42.46
2045.18    0.652    42.72
2045.28    0.652    42.97
2045.38    0.652    43.23
2045.48    0.651    43.48
2045.58    0.651    43.74
2045.68    0.651    44.00
2045.78    0.651    44.25
2045.88    0.650    44.51
2045.98    0.650    44.77






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 17:55:54



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