Double Star Calculator - Orbit

Orbital Elements for CHR209EA,EB
WDS: CHR209EA,EB WDS ID/Discoverer
P: 53.500 Orbital period (years)
a: 0.047 Semi-major axis (arcseconds)
i: 72.9 Inclination (degrees)
Ω: 302.0 Longitude of ascending node (degrees)
T: 1980.437 Epoch of periastron passage (year)
e: 0.78 Eccentricity
ω: 26.3 Longitude of periastron (degrees)
Start-Year: 1998.25 Year
End-Year: 2051.75 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for CHR209EA,EB
Position: 040749.29+621958.6 Epoch-2000 right ascension and declination
WDS-ID: 04078+6220 WDS designation
Discoverer Code: CHR209EA,EB Discover designation and components
ADS number: 2984 Aitken Double Star catalog
HD number: 25638 HD catalog number
Hipparcos number: 19270 Hipparcos catalog number
V1: 8.3 Magnitude of the primary
V2: 7.3 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2002 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Grd2007b Reference

Double Star Orbit for CHR209EA,EB



WDS 6th Orbit including measures of CHR209EA,EB

-- 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 CHR209EA,EB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.027   151.20
--------------------------
1998.25    0.075   126.12
1998.35    0.075   126.17
1998.45    0.075   126.22
1998.55    0.075   126.26
1998.65    0.076   126.31
1998.75    0.076   126.36
1998.85    0.076   126.41
1998.95    0.076   126.46
1999.05    0.076   126.50
1999.15    0.076   126.55
1999.25    0.076   126.60
1999.35    0.076   126.65
1999.45    0.076   126.69
1999.55    0.076   126.74
1999.65    0.076   126.79
1999.75    0.076   126.83
1999.85    0.076   126.88
1999.95    0.076   126.93
2000.05    0.077   126.97
2000.15    0.077   127.02
2000.25    0.077   127.07
2000.35    0.077   127.11
2000.45    0.077   127.16
2000.55    0.077   127.21
2000.65    0.077   127.25
2000.75    0.077   127.30
2000.85    0.077   127.35
2000.95    0.077   127.39
2001.05    0.077   127.44
2001.15    0.077   127.48
2001.25    0.077   127.53
2001.35    0.077   127.58
2001.45    0.077   127.62
2001.55    0.077   127.67
2001.65    0.077   127.71
2001.75    0.077   127.76
2001.85    0.077   127.81
2001.95    0.077   127.85
2002.05    0.077   127.90
2002.15    0.077   127.94
2002.25    0.077   127.99
2002.35    0.077   128.03
2002.45    0.077   128.08
2002.55    0.077   128.13
2002.65    0.077   128.17
2002.75    0.077   128.22
2002.85    0.077   128.26
2002.95    0.077   128.31
2003.05    0.077   128.35
2003.15    0.077   128.40
2003.25    0.077   128.44
2003.35    0.077   128.49
2003.45    0.077   128.54
2003.55    0.077   128.58
2003.65    0.077   128.63
2003.75    0.077   128.67
2003.85    0.077   128.72
2003.95    0.077   128.76
2004.05    0.077   128.81
2004.15    0.077   128.86
2004.25    0.077   128.90
2004.35    0.077   128.95
2004.45    0.077   128.99
2004.55    0.077   129.04
2004.65    0.077   129.09
2004.75    0.077   129.13
2004.85    0.077   129.18
2004.95    0.077   129.22
2005.05    0.077   129.27
2005.15    0.077   129.32
2005.25    0.077   129.36
2005.35    0.077   129.41
2005.45    0.077   129.45
2005.55    0.077   129.50
2005.65    0.077   129.55
2005.75    0.077   129.59
2005.85    0.077   129.64
2005.95    0.077   129.69
2006.05    0.077   129.73
2006.15    0.076   129.78
2006.25    0.076   129.83
2006.35    0.076   129.87
2006.45    0.076   129.92
2006.55    0.076   129.97
2006.65    0.076   130.01
2006.75    0.076   130.06
2006.85    0.076   130.11
2006.95    0.076   130.16
2007.05    0.076   130.20
2007.15    0.076   130.25
2007.25    0.076   130.30
2007.35    0.076   130.35
2007.45    0.076   130.39
2007.55    0.075   130.44
2007.65    0.075   130.49
2007.75    0.075   130.54
2007.85    0.075   130.59
2007.95    0.075   130.63
2008.05    0.075   130.68
2008.15    0.075   130.73
2008.25    0.075   130.78
2008.35    0.075   130.83
2008.45    0.075   130.88
2008.55    0.075   130.93
2008.65    0.074   130.98
2008.75    0.074   131.03
2008.85    0.074   131.08
2008.95    0.074   131.13
2009.05    0.074   131.18
2009.15    0.074   131.23
2009.25    0.074   131.28
2009.35    0.074   131.33
2009.45    0.074   131.38
2009.55    0.073   131.43
2009.65    0.073   131.48
2009.75    0.073   131.53
2009.85    0.073   131.58
2009.95    0.073   131.63
2010.05    0.073   131.68
2010.15    0.073   131.73
2010.25    0.073   131.79
2010.35    0.072   131.84
2010.45    0.072   131.89
2010.55    0.072   131.94
2010.65    0.072   132.00
2010.75    0.072   132.05
2010.85    0.072   132.10
2010.95    0.072   132.15
2011.05    0.071   132.21
2011.15    0.071   132.26
2011.25    0.071   132.32
2011.35    0.071   132.37
2011.45    0.071   132.42
2011.55    0.071   132.48
2011.65    0.071   132.53
2011.75    0.070   132.59
2011.85    0.070   132.64
2011.95    0.070   132.70
2012.05    0.070   132.76
2012.15    0.070   132.81
2012.25    0.070   132.87
2012.35    0.069   132.92
2012.45    0.069   132.98
2012.55    0.069   133.04
2012.65    0.069   133.10
2012.75    0.069   133.15
2012.85    0.069   133.21
2012.95    0.068   133.27
2013.05    0.068   133.33
2013.15    0.068   133.39
2013.25    0.068   133.45
2013.35    0.068   133.51
2013.45    0.067   133.57
2013.55    0.067   133.63
2013.65    0.067   133.69
2013.75    0.067   133.75
2013.85    0.067   133.81
2013.95    0.066   133.87
2014.05    0.066   133.93
2014.15    0.066   134.00
2014.25    0.066   134.06
2014.35    0.066   134.12
2014.45    0.065   134.19
2014.55    0.065   134.25
2014.65    0.065   134.31
2014.75    0.065   134.38
2014.85    0.065   134.44
2014.95    0.064   134.51
2015.05    0.064   134.58
2015.15    0.064   134.64
2015.25    0.064   134.71
2015.35    0.064   134.78
2015.45    0.063   134.85
2015.55    0.063   134.91
2015.65    0.063   134.98
2015.75    0.063   135.05
2015.85    0.062   135.12
2015.95    0.062   135.19
2016.05    0.062   135.26
2016.15    0.062   135.34
2016.25    0.061   135.41
2016.35    0.061   135.48
2016.45    0.061   135.55
2016.55    0.061   135.63
2016.65    0.060   135.70
2016.75    0.060   135.78
2016.85    0.060   135.85
2016.95    0.060   135.93
2017.05    0.059   136.01
2017.15    0.059   136.08
2017.25    0.059   136.16
2017.35    0.059   136.24
2017.45    0.058   136.32
2017.55    0.058   136.40
2017.65    0.058   136.48
2017.75    0.058   136.56
2017.85    0.057   136.65
2017.95    0.057   136.73
2018.05    0.057   136.82
2018.15    0.057   136.90
2018.25    0.056   136.99
2018.35    0.056   137.07
2018.45    0.056   137.16
2018.55    0.055   137.25
2018.65    0.055   137.34
2018.75    0.055   137.43
2018.85    0.055   137.52
2018.95    0.054   137.61
2019.05    0.054   137.71
2019.15    0.054   137.80
2019.25    0.053   137.89
2019.35    0.053   137.99
2019.45    0.053   138.09
2019.55    0.053   138.19
2019.65    0.052   138.29
2019.75    0.052   138.39
2019.85    0.052   138.49
2019.95    0.051   138.59
2020.05    0.051   138.70
2020.15    0.051   138.80
2020.25    0.050   138.91
2020.35    0.050   139.02
2020.45    0.050   139.13
2020.55    0.049   139.24
2020.65    0.049   139.35
2020.75    0.049   139.47
2020.85    0.048   139.58
2020.95    0.048   139.70
2021.05    0.048   139.82
2021.15    0.047   139.94
2021.25    0.047   140.06
2021.35    0.047   140.19
2021.45    0.046   140.31
2021.55    0.046   140.44
2021.65    0.046   140.57
2021.75    0.045   140.70
2021.85    0.045   140.83
2021.95    0.045   140.97
2022.05    0.044   141.11
2022.15    0.044   141.25
2022.25    0.044   141.39
2022.35    0.043   141.53
2022.45    0.043   141.68
2022.55    0.043   141.83
2022.65    0.042   141.98
2022.75    0.042   142.14
2022.85    0.041   142.29
2022.95    0.041   142.45
2023.05    0.041   142.62
2023.15    0.040   142.78
2023.25    0.040   142.95
2023.35    0.040   143.13
2023.45    0.039   143.30
2023.55    0.039   143.48
2023.65    0.038   143.66
2023.75    0.038   143.85
2023.85    0.038   144.04
2023.95    0.037   144.23
2024.05    0.037   144.43
2024.15    0.037   144.64
2024.25    0.036   144.84
2024.35    0.036   145.06
2024.45    0.035   145.27
2024.55    0.035   145.49
2024.65    0.035   145.72
2024.75    0.034   145.95
2024.85    0.034   146.19
2024.95    0.033   146.43
2025.05    0.033   146.68
2025.15    0.032   146.94
2025.25    0.032   147.20
2025.35    0.032   147.47
2025.45    0.031   147.75
2025.55    0.031   148.04
2025.65    0.030   148.33
2025.75    0.030   148.63
2025.85    0.029   148.94
2025.95    0.029   149.26
2026.05    0.029   149.59
2026.15    0.028   149.93
2026.25    0.028   150.28
2026.35    0.027   150.64
2026.45    0.027   151.01
2026.55    0.026   151.40
2026.65    0.026   151.80
2026.75    0.026   152.21
2026.85    0.025   152.64
2026.95    0.025   153.08
2027.05    0.024   153.54
2027.15    0.024   154.02
2027.25    0.023   154.51
2027.35    0.023   155.03
2027.45    0.022   155.57
2027.55    0.022   156.13
2027.65    0.021   156.71
2027.75    0.021   157.32
2027.85    0.020   157.96
2027.95    0.020   158.63
2028.05    0.020   159.33
2028.15    0.019   160.06
2028.25    0.019   160.83
2028.35    0.018   161.64
2028.45    0.018   162.49
2028.55    0.017   163.39
2028.65    0.017   164.34
2028.75    0.016   165.34
2028.85    0.016   166.40
2028.95    0.015   167.52
2029.05    0.015   168.71
2029.15    0.014   169.98
2029.25    0.014   171.33
2029.35    0.014   172.77
2029.45    0.013   174.30
2029.55    0.013   175.95
2029.65    0.012   177.70
2029.75    0.012   179.59
2029.85    0.011   181.60
2029.95    0.011   183.77
2030.05    0.011   186.10
2030.15    0.010   188.59
2030.25    0.010   191.27
2030.35    0.010   194.15
2030.45    0.009   197.22
2030.55    0.009   200.50
2030.65    0.009   203.99
2030.75    0.008   207.68
2030.85    0.008   211.57
2030.95    0.008   215.63
2031.05    0.008   219.85
2031.15    0.008   224.19
2031.25    0.008   228.60
2031.35    0.008   233.05
2031.45    0.008   237.49
2031.55    0.008   241.88
2031.65    0.008   246.17
2031.75    0.008   250.33
2031.85    0.008   254.34
2031.95    0.009   258.18
2032.05    0.009   261.83
2032.15    0.009   265.29
2032.25    0.009   268.57
2032.35    0.010   271.67
2032.45    0.010   274.60
2032.55    0.010   277.38
2032.65    0.010   280.01
2032.75    0.011   282.52
2032.85    0.011   284.92
2032.95    0.011   287.23
2033.05    0.011   289.46
2033.15    0.011   291.64
2033.25    0.011   293.78
2033.35    0.011   295.92
2033.45    0.011   298.07
2033.55    0.011   300.28
2033.65    0.011   302.58
2033.75    0.010   305.03
2033.85    0.010   307.70
2033.95    0.009   310.68
2034.05    0.009   314.10
2034.15    0.008   318.15
2034.25    0.007   323.10
2034.35    0.006   329.34
2034.45    0.005   337.44
2034.55    0.005   348.08
2034.65    0.004     1.82
2034.75    0.004    18.25
2034.85    0.004    35.38
2034.95    0.004    50.64
2035.05    0.005    62.78
2035.15    0.006    71.97
2035.25    0.007    78.89
2035.35    0.008    84.18
2035.45    0.009    88.31
2035.55    0.010    91.61
2035.65    0.011    94.30
2035.75    0.012    96.54
2035.85    0.013    98.43
2035.95    0.013   100.04
2036.05    0.014   101.45
2036.15    0.015   102.68
2036.25    0.016   103.77
2036.35    0.017   104.75
2036.45    0.018   105.63
2036.55    0.019   106.42
2036.65    0.020   107.15
2036.75    0.021   107.81
2036.85    0.022   108.43
2036.95    0.022   108.99
2037.05    0.023   109.52
2037.15    0.024   110.01
2037.25    0.025   110.47
2037.35    0.026   110.90
2037.45    0.026   111.31
2037.55    0.027   111.69
2037.65    0.028   112.05
2037.75    0.029   112.40
2037.85    0.029   112.72
2037.95    0.030   113.03
2038.05    0.031   113.33
2038.15    0.031   113.62
2038.25    0.032   113.89
2038.35    0.033   114.15
2038.45    0.033   114.40
2038.55    0.034   114.64
2038.65    0.035   114.87
2038.75    0.035   115.09
2038.85    0.036   115.31
2038.95    0.037   115.52
2039.05    0.037   115.72
2039.15    0.038   115.91
2039.25    0.038   116.10
2039.35    0.039   116.28
2039.45    0.040   116.46
2039.55    0.040   116.63
2039.65    0.041   116.80
2039.75    0.041   116.96
2039.85    0.042   117.12
2039.95    0.042   117.28
2040.05    0.043   117.43
2040.15    0.043   117.58
2040.25    0.044   117.72
2040.35    0.044   117.86
2040.45    0.045   118.00
2040.55    0.045   118.13
2040.65    0.046   118.26
2040.75    0.046   118.39
2040.85    0.047   118.52
2040.95    0.047   118.64
2041.05    0.048   118.76
2041.15    0.048   118.88
2041.25    0.049   119.00
2041.35    0.049   119.11
2041.45    0.050   119.22
2041.55    0.050   119.33
2041.65    0.051   119.44
2041.75    0.051   119.55
2041.85    0.051   119.65
2041.95    0.052   119.75
2042.05    0.052   119.85
2042.15    0.053   119.95
2042.25    0.053   120.05
2042.35    0.053   120.15
2042.45    0.054   120.24
2042.55    0.054   120.34
2042.65    0.055   120.43
2042.75    0.055   120.52
2042.85    0.055   120.61
2042.95    0.056   120.70
2043.05    0.056   120.79
2043.15    0.056   120.87
2043.25    0.057   120.96
2043.35    0.057   121.04
2043.45    0.058   121.13
2043.55    0.058   121.21
2043.65    0.058   121.29
2043.75    0.059   121.37
2043.85    0.059   121.45
2043.95    0.059   121.53
2044.05    0.060   121.61
2044.15    0.060   121.68
2044.25    0.060   121.76
2044.35    0.061   121.83
2044.45    0.061   121.91
2044.55    0.061   121.98
2044.65    0.061   122.05
2044.75    0.062   122.13
2044.85    0.062   122.20
2044.95    0.062   122.27
2045.05    0.063   122.34
2045.15    0.063   122.41
2045.25    0.063   122.48
2045.35    0.063   122.55
2045.45    0.064   122.61
2045.55    0.064   122.68
2045.65    0.064   122.75
2045.75    0.065   122.81
2045.85    0.065   122.88
2045.95    0.065   122.94
2046.05    0.065   123.01
2046.15    0.066   123.07
2046.25    0.066   123.13
2046.35    0.066   123.20
2046.45    0.066   123.26
2046.55    0.067   123.32
2046.65    0.067   123.38
2046.75    0.067   123.44
2046.85    0.067   123.51
2046.95    0.067   123.57
2047.05    0.068   123.63
2047.15    0.068   123.68
2047.25    0.068   123.74
2047.35    0.068   123.80
2047.45    0.069   123.86
2047.55    0.069   123.92
2047.65    0.069   123.98
2047.75    0.069   124.03
2047.85    0.069   124.09
2047.95    0.070   124.15
2048.05    0.070   124.20
2048.15    0.070   124.26
2048.25    0.070   124.32
2048.35    0.070   124.37
2048.45    0.071   124.43
2048.55    0.071   124.48
2048.65    0.071   124.54
2048.75    0.071   124.59
2048.85    0.071   124.64
2048.95    0.071   124.70
2049.05    0.072   124.75
2049.15    0.072   124.81
2049.25    0.072   124.86
2049.35    0.072   124.91
2049.45    0.072   124.96
2049.55    0.072   125.02
2049.65    0.073   125.07
2049.75    0.073   125.12
2049.85    0.073   125.17
2049.95    0.073   125.22
2050.05    0.073   125.27
2050.15    0.073   125.33
2050.25    0.073   125.38
2050.35    0.073   125.43
2050.45    0.074   125.48
2050.55    0.074   125.53
2050.65    0.074   125.58
2050.75    0.074   125.63
2050.85    0.074   125.68
2050.95    0.074   125.73
2051.05    0.074   125.78
2051.15    0.074   125.83
2051.25    0.075   125.88
2051.35    0.075   125.93
2051.45    0.075   125.97
2051.55    0.075   126.02
2051.65    0.075   126.07






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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 15:18:02



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