Double Star Calculator - Orbit

Orbital Elements for CHR239

WDS:	CHR239	WDS ID/Discoverer
P:	10.860	Orbital period (years)
a:	0.122	Semi-major axis (arcseconds)
i:	147.0	Inclination (degrees)
Ω:	332.6	Longitude of ascending node (degrees)
T:	2013.510	Epoch of periastron passage (year)
e:	0.394	Eccentricity
ω:	260.1	Longitude of periastron (degrees)
Start-Year:	2019.57	Year
End-Year:	2030.43	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR239
Position:	091904.43-412805.6	Epoch-2000 right ascension and declination
WDS-ID:	09191-4128	WDS designation
Discoverer Code:	CHR239	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	80542	HD catalog number
Hipparcos number:	45705	Hipparcos catalog number
V1:	7.5	Magnitude of the primary
V2:	8.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	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:	Tok2014a	Reference

Double Star Orbit for CHR239

WDS 6th Orbit including measures of CHR239

-- 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 CHR239

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.123   318.94
--------------------------
2019.57    0.141   242.55
2019.67    0.141   240.64
2019.77    0.140   238.71
2019.87    0.140   236.78
2019.97    0.139   234.82
2020.07    0.139   232.86
2020.17    0.138   230.87
2020.27    0.138   228.87
2020.37    0.137   226.86
2020.47    0.136   224.82
2020.57    0.136   222.77
2020.67    0.135   220.69
2020.77    0.134   218.59
2020.87    0.134   216.47
2020.97    0.133   214.33
2021.07    0.132   212.15
2021.17    0.131   209.95
2021.27    0.130   207.72
2021.37    0.129   205.46
2021.47    0.128   203.16
2021.57    0.127   200.82
2021.67    0.126   198.45
2021.77    0.125   196.03
2021.87    0.123   193.56
2021.97    0.122   191.04
2022.07    0.121   188.46
2022.17    0.119   185.81
2022.27    0.118   183.10
2022.37    0.116   180.31
2022.47    0.114   177.43
2022.57    0.112   174.46
2022.67    0.110   171.38
2022.77    0.108   168.17
2022.87    0.105   164.82
2022.97    0.103   161.32
2023.07    0.100   157.63
2023.17    0.097   153.73
2023.27    0.094   149.59
2023.37    0.091   145.17
2023.47    0.088   140.43
2023.57    0.084   135.30
2023.67    0.081   129.73
2023.77    0.077   123.66
2023.87    0.074   117.01
2023.97    0.071   109.74
2024.07    0.068   101.79
2024.17    0.065    93.18
2024.27    0.063    83.98
2024.37    0.062    74.36
2024.47    0.062    64.53
2024.57    0.063    54.79
2024.67    0.064    45.39
2024.77    0.067    36.54
2024.87    0.070    28.35
2024.97    0.073    20.87
2025.07    0.077    14.07
2025.17    0.080     7.90
2025.27    0.084     2.31
2025.37    0.088   357.20
2025.47    0.092   352.53
2025.57    0.096   348.23
2025.67    0.100   344.25
2025.77    0.103   340.54
2025.87    0.106   337.06
2025.97    0.109   333.79
2026.07    0.112   330.70
2026.17    0.115   327.76
2026.27    0.118   324.96
2026.37    0.120   322.27
2026.47    0.123   319.69
2026.57    0.125   317.20
2026.67    0.127   314.80
2026.77    0.129   312.46
2026.87    0.130   310.19
2026.97    0.132   307.98
2027.07    0.133   305.81
2027.17    0.135   303.70
2027.27    0.136   301.62
2027.37    0.137   299.58
2027.47    0.138   297.57
2027.57    0.139   295.59
2027.67    0.140   293.64
2027.77    0.141   291.71
2027.87    0.141   289.79
2027.97    0.142   287.90
2028.07    0.143   286.02
2028.17    0.143   284.16
2028.27    0.143   282.30
2028.37    0.144   280.46
2028.47    0.144   278.62
2028.57    0.144   276.79
2028.67    0.144   274.97
2028.77    0.145   273.15
2028.87    0.145   271.33
2028.97    0.145   269.51
2029.07    0.145   267.70
2029.17    0.145   265.88
2029.27    0.145   264.06
2029.37    0.144   262.24
2029.47    0.144   260.41
2029.57    0.144   258.59
2029.67    0.144   256.75
2029.77    0.144   254.91
2029.87    0.143   253.06
2029.97    0.143   251.21
2030.07    0.143   249.34
2030.17    0.142   247.47
2030.27    0.142   245.59
2030.37    0.142   243.69

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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 16:17:12