Double Star Calculator - Orbit

Orbital Elements for CHR77CA,CB
WDS: CHR77CA,CB WDS ID/Discoverer
P: 15.750 Orbital period (years)
a: 0.191 Semi-major axis (arcseconds)
i: 109.9 Inclination (degrees)
Ω: 42.4 Longitude of ascending node (degrees)
T: 2008.940 Epoch of periastron passage (year)
e: 0.411 Eccentricity
ω: 127.2 Longitude of periastron (degrees)
Start-Year: 2017.125 Year
End-Year: 2032.875 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for CHR77CA,CB
Position: 184422.78+393645.8 Epoch-2000 right ascension and declination
WDS-ID: 18443+3940 WDS designation
Discoverer Code: CHR77CA,CB Discover designation and components
ADS number: 11635 Aitken Double Star catalog
HD number: 173607 HD catalog number
Hipparcos number: 91926 Hipparcos catalog number
V1: 5.25 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2005 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Doc2020e Reference

Double Star Orbit for CHR77CA,CB



WDS 6th Orbit including measures of CHR77CA,CB

-- 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 CHR77CA,CB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.132   209.81
--------------------------
2017.12    0.188    64.17
2017.22    0.191    63.45
2017.32    0.194    62.75
2017.42    0.197    62.07
2017.52    0.199    61.41
2017.62    0.202    60.76
2017.72    0.204    60.13
2017.82    0.207    59.52
2017.92    0.209    58.92
2018.02    0.211    58.33
2018.12    0.213    57.76
2018.22    0.215    57.20
2018.32    0.217    56.64
2018.42    0.219    56.10
2018.52    0.220    55.56
2018.62    0.222    55.03
2018.72    0.223    54.51
2018.82    0.225    53.99
2018.92    0.226    53.48
2019.02    0.227    52.97
2019.12    0.228    52.47
2019.22    0.228    51.97
2019.32    0.229    51.48
2019.42    0.229    50.99
2019.52    0.230    50.49
2019.62    0.230    50.00
2019.72    0.230    49.51
2019.82    0.229    49.02
2019.92    0.229    48.53
2020.02    0.229    48.04
2020.12    0.228    47.54
2020.22    0.227    47.04
2020.32    0.226    46.53
2020.42    0.225    46.03
2020.52    0.223    45.51
2020.62    0.222    44.99
2020.72    0.220    44.46
2020.82    0.218    43.92
2020.92    0.216    43.36
2021.02    0.213    42.80
2021.12    0.210    42.22
2021.22    0.207    41.63
2021.32    0.204    41.02
2021.42    0.201    40.39
2021.52    0.197    39.74
2021.62    0.193    39.06
2021.72    0.189    38.35
2021.82    0.185    37.61
2021.92    0.180    36.84
2022.02    0.175    36.02
2022.12    0.170    35.15
2022.22    0.164    34.22
2022.32    0.159    33.23
2022.42    0.153    32.16
2022.52    0.146    31.00
2022.62    0.140    29.74
2022.72    0.133    28.34
2022.82    0.125    26.78
2022.92    0.118    25.03
2023.02    0.110    23.04
2023.12    0.102    20.75
2023.22    0.094    18.07
2023.32    0.086    14.87
2023.42    0.078    11.00
2023.52    0.070     6.22
2023.62    0.062     0.20
2023.72    0.054   352.49
2023.82    0.048   342.59
2023.92    0.043   330.14
2024.02    0.041   315.42
2024.12    0.041   299.83
2024.22    0.044   285.29
2024.32    0.049   273.08
2024.42    0.055   263.38
2024.52    0.062   255.78
2024.62    0.070   249.79
2024.72    0.077   244.98
2024.82    0.085   241.02
2024.92    0.092   237.69
2025.02    0.098   234.82
2025.12    0.105   232.31
2025.22    0.110   230.07
2025.32    0.115   228.03
2025.42    0.120   226.16
2025.52    0.123   224.41
2025.62    0.127   222.75
2025.72    0.129   221.17
2025.82    0.131   219.64
2025.92    0.133   218.15
2026.02    0.134   216.69
2026.12    0.134   215.25
2026.22    0.134   213.81
2026.32    0.134   212.37
2026.42    0.133   210.91
2026.52    0.132   209.44
2026.62    0.131   207.94
2026.72    0.129   206.40
2026.82    0.127   204.82
2026.92    0.125   203.20
2027.02    0.123   201.51
2027.12    0.120   199.76
2027.22    0.118   197.94
2027.32    0.115   196.03
2027.42    0.112   194.03
2027.52    0.110   191.93
2027.62    0.107   189.73
2027.72    0.104   187.40
2027.82    0.101   184.94
2027.92    0.099   182.35
2028.02    0.096   179.61
2028.12    0.093   176.72
2028.22    0.091   173.67
2028.32    0.089   170.46
2028.42    0.087   167.09
2028.52    0.085   163.57
2028.62    0.083   159.90
2028.72    0.082   156.10
2028.82    0.081   152.18
2028.92    0.080   148.18
2029.02    0.080   144.12
2029.12    0.080   140.04
2029.22    0.080   135.96
2029.32    0.080   131.93
2029.42    0.081   127.97
2029.52    0.083   124.11
2029.62    0.084   120.38
2029.72    0.086   116.79
2029.82    0.088   113.36
2029.92    0.090   110.10
2030.02    0.093   107.00
2030.12    0.095   104.07
2030.22    0.098   101.31
2030.32    0.101    98.70
2030.42    0.104    96.25
2030.52    0.108    93.95
2030.62    0.111    91.78
2030.72    0.114    89.74
2030.82    0.118    87.81
2030.92    0.121    86.00
2031.02    0.125    84.30
2031.12    0.128    82.68
2031.22    0.132    81.16
2031.32    0.136    79.71
2031.42    0.139    78.35
2031.52    0.143    77.05
2031.62    0.147    75.81
2031.72    0.150    74.63
2031.82    0.154    73.51
2031.92    0.157    72.44
2032.02    0.161    71.42
2032.12    0.164    70.43
2032.22    0.167    69.49
2032.32    0.171    68.59
2032.42    0.174    67.72
2032.52    0.177    66.88
2032.62    0.180    66.07
2032.72    0.184    65.29
2032.82    0.187    64.53



 

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 17:54:57


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