Double Star Calculator - Orbit

Orbital Elements for CHR117

WDS:	CHR117	WDS ID/Discoverer
P:	14.470	Orbital period (years)
a:	0.12	Semi-major axis (arcseconds)
i:	46.0	Inclination (degrees)
Ω:	235.0	Longitude of ascending node (degrees)
T:	1990.150	Epoch of periastron passage (year)
e:	0.35	Eccentricity
ω:	236.0	Longitude of periastron (degrees)
Start-Year:	2017.765	Year
End-Year:	2032.235	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR117
Position:	033341.23+575207.1	Epoch-2000 right ascension and declination
WDS-ID:	03337+5752	WDS designation
Discoverer Code:	CHR117	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	21794	HD catalog number
Hipparcos number:	16602	Hipparcos catalog number
V1:	6.36	Magnitude of the primary
V2:	6.6	Magnitude of the secondary
Equinox:		Equinox
Date:	1998	Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Bag2002	Reference

Double Star Orbit for CHR117

WDS 6th Orbit including measures of CHR117

-- 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 CHR117

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.128   283.29
--------------------------
2017.77    0.091    48.61
2017.87    0.090    51.45
2017.96    0.088    54.39
2018.06    0.087    57.43
2018.16    0.085    60.59
2018.26    0.083    63.90
2018.36    0.081    67.39
2018.46    0.078    71.08
2018.56    0.076    75.00
2018.66    0.073    79.19
2018.76    0.071    83.68
2018.86    0.068    88.52
2018.96    0.066    93.74
2019.06    0.063    99.37
2019.16    0.061   105.42
2019.26    0.059   111.89
2019.36    0.058   118.73
2019.46    0.057   125.88
2019.56    0.056   133.20
2019.66    0.056   140.58
2019.76    0.057   147.84
2019.86    0.058   154.87
2019.96    0.060   161.54
2020.06    0.062   167.78
2020.16    0.065   173.57
2020.26    0.068   178.89
2020.36    0.071   183.76
2020.46    0.074   188.22
2020.56    0.077   192.29
2020.66    0.081   196.02
2020.76    0.084   199.45
2020.86    0.088   202.61
2020.96    0.091   205.54
2021.06    0.094   208.25
2021.16    0.098   210.79
2021.26    0.101   213.16
2021.36    0.104   215.39
2021.46    0.107   217.49
2021.56    0.110   219.48
2021.66    0.112   221.38
2021.76    0.115   223.18
2021.86    0.117   224.91
2021.96    0.120   226.57
2022.06    0.122   228.16
2022.16    0.124   229.70
2022.26    0.126   231.19
2022.36    0.128   232.63
2022.46    0.130   234.04
2022.56    0.131   235.40
2022.66    0.133   236.74
2022.76    0.134   238.04
2022.86    0.136   239.32
2022.96    0.137   240.58
2023.06    0.138   241.82
2023.16    0.139   243.03
2023.26    0.140   244.23
2023.36    0.141   245.42
2023.46    0.141   246.60
2023.56    0.142   247.76
2023.66    0.142   248.92
2023.76    0.143   250.06
2023.86    0.143   251.21
2023.96    0.143   252.34
2024.06    0.143   253.48
2024.16    0.143   254.61
2024.26    0.143   255.75
2024.36    0.143   256.88
2024.46    0.143   258.02
2024.56    0.143   259.15
2024.66    0.143   260.30
2024.76    0.142   261.45
2024.86    0.142   262.60
2024.96    0.141   263.76
2025.06    0.141   264.93
2025.16    0.140   266.11
2025.26    0.140   267.30
2025.36    0.139   268.51
2025.46    0.138   269.72
2025.56    0.137   270.95
2025.66    0.137   272.19
2025.76    0.136   273.45
2025.86    0.135   274.73
2025.96    0.134   276.02
2026.06    0.133   277.33
2026.16    0.132   278.67
2026.26    0.131   280.02
2026.36    0.130   281.40
2026.46    0.129   282.80
2026.56    0.127   284.22
2026.66    0.126   285.67
2026.76    0.125   287.15
2026.86    0.124   288.65
2026.96    0.123   290.18
2027.06    0.122   291.74
2027.16    0.120   293.34
2027.26    0.119   294.96
2027.36    0.118   296.62
2027.46    0.117   298.31
2027.56    0.116   300.04
2027.66    0.115   301.80
2027.76    0.113   303.59
2027.86    0.112   305.42
2027.96    0.111   307.29
2028.06    0.110   309.20
2028.16    0.109   311.14
2028.26    0.108   313.12
2028.36    0.107   315.13
2028.46    0.106   317.18
2028.56    0.105   319.27
2028.66    0.104   321.39
2028.76    0.104   323.55
2028.86    0.103   325.74
2028.96    0.102   327.96
2029.06    0.101   330.21
2029.16    0.101   332.49
2029.26    0.100   334.80
2029.36    0.100   337.13
2029.46    0.099   339.49
2029.56    0.099   341.86
2029.66    0.099   344.26
2029.76    0.098   346.66
2029.86    0.098   349.09
2029.96    0.098   351.52
2030.06    0.098   353.96
2030.16    0.097   356.41
2030.26    0.097   358.87
2030.36    0.097     1.33
2030.46    0.097     3.79
2030.56    0.097     6.25
2030.66    0.097     8.71
2030.76    0.097    11.18
2030.86    0.097    13.64
2030.96    0.097    16.11
2031.06    0.097    18.57
2031.16    0.097    21.04
2031.26    0.097    23.52
2031.36    0.097    26.00
2031.46    0.097    28.49
2031.56    0.096    31.00
2031.66    0.096    33.53
2031.76    0.095    36.08
2031.86    0.095    38.66
2031.96    0.094    41.28
2032.06    0.093    43.94
2032.16    0.092    46.66

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 15:12:17