Double Star Calculator - Orbit

Orbital Elements for HDS2980
WDS: HDS2980 WDS ID/Discoverer
P: 38.740 Orbital period (years)
a: 0.093 Semi-major axis (arcseconds)
i: 39.9 Inclination (degrees)
Ω: 152.1 Longitude of ascending node (degrees)
T: 2019.080 Epoch of periastron passage (year)
e: 0.65 Eccentricity
ω: 82.1 Longitude of periastron (degrees)
Start-Year: 2005.63 Year
End-Year: 2044.37 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS2980
Position: 205513.68-300824.9 Epoch-2000 right ascension and declination
WDS-ID: 20552-3008 WDS designation
Discoverer Code: HDS2980 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 199017 HD catalog number
Hipparcos number: 103264 Hipparcos catalog number
V1: 8.65 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 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: Tok2021c Reference

Double Star Orbit for HDS2980



WDS 6th Orbit including measures of HDS2980

-- 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 HDS2980
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.098     7.80
--------------------------
2005.63    0.111    72.73
2005.73    0.110    73.11
2005.83    0.110    73.50
2005.93    0.110    73.88
2006.03    0.110    74.27
2006.13    0.109    74.66
2006.23    0.109    75.06
2006.33    0.109    75.45
2006.43    0.109    75.85
2006.53    0.108    76.24
2006.63    0.108    76.64
2006.73    0.108    77.05
2006.83    0.108    77.45
2006.93    0.107    77.85
2007.03    0.107    78.26
2007.13    0.107    78.67
2007.23    0.107    79.08
2007.33    0.106    79.50
2007.43    0.106    79.91
2007.53    0.106    80.33
2007.63    0.105    80.75
2007.73    0.105    81.17
2007.83    0.105    81.60
2007.93    0.105    82.02
2008.03    0.104    82.45
2008.13    0.104    82.88
2008.23    0.104    83.32
2008.33    0.103    83.76
2008.43    0.103    84.20
2008.53    0.103    84.64
2008.63    0.102    85.08
2008.73    0.102    85.53
2008.83    0.102    85.98
2008.93    0.101    86.43
2009.03    0.101    86.89
2009.13    0.101    87.35
2009.23    0.100    87.81
2009.33    0.100    88.28
2009.43    0.100    88.75
2009.53    0.099    89.22
2009.63    0.099    89.70
2009.73    0.099    90.18
2009.83    0.098    90.66
2009.93    0.098    91.15
2010.03    0.098    91.64
2010.13    0.097    92.13
2010.23    0.097    92.63
2010.33    0.096    93.13
2010.43    0.096    93.64
2010.53    0.096    94.15
2010.63    0.095    94.66
2010.73    0.095    95.18
2010.83    0.094    95.71
2010.93    0.094    96.23
2011.03    0.094    96.77
2011.13    0.093    97.31
2011.23    0.093    97.85
2011.33    0.092    98.40
2011.43    0.092    98.95
2011.53    0.091    99.51
2011.63    0.091   100.07
2011.73    0.090   100.64
2011.83    0.090   101.22
2011.93    0.089   101.80
2012.03    0.089   102.39
2012.13    0.088   102.99
2012.23    0.088   103.59
2012.33    0.087   104.20
2012.43    0.087   104.81
2012.53    0.086   105.44
2012.63    0.086   106.07
2012.73    0.085   106.71
2012.83    0.085   107.35
2012.93    0.084   108.01
2013.03    0.084   108.67
2013.13    0.083   109.35
2013.23    0.083   110.03
2013.33    0.082   110.72
2013.43    0.081   111.42
2013.53    0.081   112.13
2013.63    0.080   112.86
2013.73    0.080   113.59
2013.83    0.079   114.34
2013.93    0.078   115.09
2014.03    0.078   115.86
2014.13    0.077   116.65
2014.23    0.076   117.44
2014.33    0.076   118.26
2014.43    0.075   119.08
2014.53    0.074   119.92
2014.63    0.074   120.78
2014.73    0.073   121.66
2014.83    0.072   122.55
2014.93    0.071   123.46
2015.03    0.070   124.40
2015.13    0.070   125.35
2015.23    0.069   126.32
2015.33    0.068   127.32
2015.43    0.067   128.35
2015.53    0.066   129.40
2015.63    0.065   130.48
2015.73    0.065   131.58
2015.83    0.064   132.72
2015.93    0.063   133.90
2016.03    0.062   135.11
2016.13    0.061   136.35
2016.23    0.060   137.64
2016.33    0.059   138.98
2016.43    0.058   140.36
2016.53    0.057   141.80
2016.63    0.055   143.29
2016.73    0.054   144.84
2016.83    0.053   146.46
2016.93    0.052   148.16
2017.03    0.051   149.93
2017.13    0.050   151.80
2017.23    0.048   153.76
2017.33    0.047   155.83
2017.43    0.046   158.03
2017.53    0.044   160.36
2017.63    0.043   162.84
2017.73    0.041   165.49
2017.83    0.040   168.33
2017.93    0.038   171.40
2018.03    0.037   174.70
2018.13    0.035   178.29
2018.23    0.034   182.19
2018.33    0.032   186.44
2018.43    0.031   191.07
2018.53    0.030   196.14
2018.63    0.029   201.66
2018.73    0.027   207.65
2018.83    0.027   214.10
2018.93    0.026   220.96
2019.03    0.025   228.16
2019.13    0.025   235.57
2019.23    0.025   243.04
2019.33    0.025   250.41
2019.43    0.026   257.53
2019.53    0.027   264.29
2019.63    0.028   270.61
2019.73    0.029   276.46
2019.83    0.030   281.83
2019.93    0.032   286.73
2020.03    0.033   291.21
2020.13    0.035   295.29
2020.23    0.036   299.02
2020.33    0.038   302.44
2020.43    0.039   305.58
2020.53    0.041   308.48
2020.63    0.043   311.16
2020.73    0.044   313.65
2020.83    0.046   315.97
2020.93    0.047   318.13
2021.03    0.049   320.16
2021.13    0.050   322.07
2021.23    0.052   323.88
2021.33    0.053   325.58
2021.43    0.055   327.20
2021.53    0.056   328.74
2021.63    0.057   330.21
2021.73    0.059   331.61
2021.83    0.060   332.94
2021.93    0.061   334.23
2022.03    0.062   335.46
2022.13    0.063   336.65
2022.23    0.065   337.79
2022.33    0.066   338.89
2022.43    0.067   339.96
2022.53    0.068   340.99
2022.63    0.069   341.99
2022.73    0.070   342.96
2022.83    0.071   343.90
2022.93    0.072   344.81
2023.03    0.073   345.70
2023.13    0.074   346.57
2023.23    0.075   347.41
2023.33    0.076   348.24
2023.43    0.077   349.04
2023.53    0.078   349.83
2023.63    0.079   350.59
2023.73    0.079   351.34
2023.83    0.080   352.08
2023.93    0.081   352.80
2024.03    0.082   353.51
2024.13    0.083   354.20
2024.23    0.083   354.88
2024.33    0.084   355.55
2024.43    0.085   356.20
2024.53    0.086   356.84
2024.63    0.086   357.48
2024.73    0.087   358.10
2024.83    0.088   358.71
2024.93    0.088   359.32
2025.03    0.089   359.91
2025.13    0.090     0.50
2025.23    0.090     1.08
2025.33    0.091     1.65
2025.43    0.092     2.21
2025.53    0.092     2.76
2025.63    0.093     3.31
2025.73    0.093     3.85
2025.83    0.094     4.38
2025.93    0.095     4.91
2026.03    0.095     5.43
2026.13    0.096     5.95
2026.23    0.096     6.46
2026.33    0.097     6.96
2026.43    0.097     7.46
2026.53    0.098     7.95
2026.63    0.098     8.44
2026.73    0.099     8.92
2026.83    0.099     9.40
2026.93    0.100     9.88
2027.03    0.100    10.34
2027.13    0.101    10.81
2027.23    0.101    11.27
2027.33    0.101    11.73
2027.43    0.102    12.18
2027.53    0.102    12.63
2027.63    0.103    13.08
2027.73    0.103    13.52
2027.83    0.104    13.96
2027.93    0.104    14.39
2028.03    0.104    14.82
2028.13    0.105    15.25
2028.23    0.105    15.68
2028.33    0.105    16.10
2028.43    0.106    16.52
2028.53    0.106    16.94
2028.63    0.107    17.35
2028.73    0.107    17.76
2028.83    0.107    18.17
2028.93    0.108    18.58
2029.03    0.108    18.98
2029.13    0.108    19.38
2029.23    0.109    19.78
2029.33    0.109    20.18
2029.43    0.109    20.57
2029.53    0.109    20.97
2029.63    0.110    21.36
2029.73    0.110    21.75
2029.83    0.110    22.13
2029.93    0.111    22.52
2030.03    0.111    22.90
2030.13    0.111    23.28
2030.23    0.111    23.66
2030.33    0.112    24.04
2030.43    0.112    24.41
2030.53    0.112    24.79
2030.63    0.112    25.16
2030.73    0.113    25.53
2030.83    0.113    25.90
2030.93    0.113    26.27
2031.03    0.113    26.63
2031.13    0.113    27.00
2031.23    0.114    27.36
2031.33    0.114    27.72
2031.43    0.114    28.08
2031.53    0.114    28.44
2031.63    0.114    28.80
2031.73    0.115    29.16
2031.83    0.115    29.52
2031.93    0.115    29.87
2032.03    0.115    30.23
2032.13    0.115    30.58
2032.23    0.115    30.93
2032.33    0.116    31.28
2032.43    0.116    31.63
2032.53    0.116    31.98
2032.63    0.116    32.33
2032.73    0.116    32.68
2032.83    0.116    33.02
2032.93    0.116    33.37
2033.03    0.117    33.72
2033.13    0.117    34.06
2033.23    0.117    34.40
2033.33    0.117    34.75
2033.43    0.117    35.09
2033.53    0.117    35.43
2033.63    0.117    35.77
2033.73    0.117    36.11
2033.83    0.118    36.45
2033.93    0.118    36.79
2034.03    0.118    37.13
2034.13    0.118    37.47
2034.23    0.118    37.80
2034.33    0.118    38.14
2034.43    0.118    38.48
2034.53    0.118    38.81
2034.63    0.118    39.15
2034.73    0.118    39.48
2034.83    0.118    39.82
2034.93    0.118    40.15
2035.03    0.118    40.49
2035.13    0.118    40.82
2035.23    0.119    41.15
2035.33    0.119    41.49
2035.43    0.119    41.82
2035.53    0.119    42.15
2035.63    0.119    42.49
2035.73    0.119    42.82
2035.83    0.119    43.15
2035.93    0.119    43.48
2036.03    0.119    43.82
2036.13    0.119    44.15
2036.23    0.119    44.48
2036.33    0.119    44.81
2036.43    0.119    45.14
2036.53    0.119    45.47
2036.63    0.119    45.80
2036.73    0.119    46.14
2036.83    0.119    46.47
2036.93    0.119    46.80
2037.03    0.119    47.13
2037.13    0.119    47.46
2037.23    0.119    47.79
2037.33    0.119    48.12
2037.43    0.119    48.46
2037.53    0.119    48.79
2037.63    0.119    49.12
2037.73    0.119    49.45
2037.83    0.119    49.78
2037.93    0.119    50.12
2038.03    0.119    50.45
2038.13    0.119    50.78
2038.23    0.119    51.11
2038.33    0.119    51.45
2038.43    0.119    51.78
2038.53    0.118    52.11
2038.63    0.118    52.45
2038.73    0.118    52.78
2038.83    0.118    53.12
2038.93    0.118    53.45
2039.03    0.118    53.79
2039.13    0.118    54.12
2039.23    0.118    54.46
2039.33    0.118    54.80
2039.43    0.118    55.13
2039.53    0.118    55.47
2039.63    0.118    55.81
2039.73    0.118    56.15
2039.83    0.118    56.49
2039.93    0.117    56.83
2040.03    0.117    57.17
2040.13    0.117    57.51
2040.23    0.117    57.85
2040.33    0.117    58.19
2040.43    0.117    58.53
2040.53    0.117    58.88
2040.63    0.117    59.22
2040.73    0.117    59.56
2040.83    0.116    59.91
2040.93    0.116    60.25
2041.03    0.116    60.60
2041.13    0.116    60.95
2041.23    0.116    61.30
2041.33    0.116    61.64
2041.43    0.116    61.99
2041.53    0.116    62.34
2041.63    0.115    62.70
2041.73    0.115    63.05
2041.83    0.115    63.40
2041.93    0.115    63.75
2042.03    0.115    64.11
2042.13    0.115    64.46
2042.23    0.115    64.82
2042.33    0.114    65.18
2042.43    0.114    65.54
2042.53    0.114    65.90
2042.63    0.114    66.26
2042.73    0.114    66.62
2042.83    0.114    66.98
2042.93    0.113    67.35
2043.03    0.113    67.71
2043.13    0.113    68.08
2043.23    0.113    68.44
2043.33    0.113    68.81
2043.43    0.112    69.18
2043.53    0.112    69.55
2043.63    0.112    69.93
2043.73    0.112    70.30
2043.83    0.112    70.68
2043.93    0.111    71.05
2044.03    0.111    71.43
2044.13    0.111    71.81
2044.23    0.111    72.19
2044.33    0.111    72.57






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 18:20:03



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