Double Star Calculator - Orbit

Orbital Elements for CHR242AA,AB

WDS:	CHR242AA,AB	WDS ID/Discoverer
P:	15.672	Orbital period (years)
a:	0.1556	Semi-major axis (arcseconds)
i:	111.6	Inclination (degrees)
Ω:	124.2	Longitude of ascending node (degrees)
T:	2010.714	Epoch of periastron passage (year)
e:	0.4796	Eccentricity
ω:	226.5	Longitude of periastron (degrees)
Start-Year:	2017.164	Year
End-Year:	2032.836	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR242AA,AB
Position:	112458.83-315957.5	Epoch-2000 right ascension and declination
WDS-ID:	11250-3200	WDS designation
Discoverer Code:	CHR242AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	99240	HD catalog number
Hipparcos number:	55714	Hipparcos catalog number
V1:	8.0	Magnitude of the primary
V2:	8.9	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2024	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:	Tok2024b	Reference

Double Star Orbit for CHR242AA,AB

WDS 6th Orbit including measures of CHR242AA,AB

-- 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 CHR242AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.053   276.50
--------------------------
2017.16    0.193   110.49
2017.26    0.192   110.00
2017.36    0.191   109.51
2017.46    0.189   109.01
2017.56    0.188   108.51
2017.66    0.186   107.99
2017.76    0.185   107.47
2017.86    0.183   106.94
2017.96    0.181   106.40
2018.06    0.180   105.85
2018.16    0.178   105.29
2018.26    0.176   104.72
2018.36    0.174   104.13
2018.46    0.172   103.53
2018.56    0.170   102.91
2018.66    0.167   102.28
2018.76    0.165   101.63
2018.86    0.163   100.96
2018.96    0.160   100.27
2019.06    0.158    99.57
2019.16    0.156    98.84
2019.26    0.153    98.08
2019.36    0.150    97.30
2019.46    0.148    96.49
2019.56    0.145    95.65
2019.66    0.142    94.78
2019.76    0.140    93.88
2019.86    0.137    92.94
2019.96    0.134    91.96
2020.06    0.131    90.94
2020.16    0.128    89.87
2020.26    0.125    88.75
2020.36    0.122    87.57
2020.46    0.119    86.34
2020.56    0.116    85.05
2020.66    0.113    83.69
2020.76    0.110    82.25
2020.86    0.107    80.74
2020.96    0.105    79.14
2021.06    0.102    77.45
2021.16    0.099    75.65
2021.26    0.096    73.75
2021.36    0.093    71.74
2021.46    0.090    69.60
2021.56    0.088    67.33
2021.66    0.085    64.91
2021.76    0.083    62.35
2021.86    0.080    59.63
2021.96    0.078    56.75
2022.06    0.076    53.71
2022.16    0.074    50.49
2022.26    0.072    47.12
2022.36    0.071    43.58
2022.46    0.069    39.90
2022.56    0.068    36.08
2022.66    0.067    32.15
2022.76    0.067    28.14
2022.86    0.066    24.07
2022.96    0.066    19.97
2023.06    0.066    15.88
2023.16    0.067    11.83
2023.26    0.068     7.85
2023.36    0.068     3.96
2023.46    0.070     0.19
2023.56    0.071   356.54
2023.66    0.072   353.05
2023.76    0.074   349.70
2023.86    0.076   346.50
2023.96    0.078   343.44
2024.06    0.080   340.54
2024.16    0.081   337.76
2024.26    0.083   335.12
2024.36    0.085   332.60
2024.46    0.087   330.18
2024.56    0.089   327.87
2024.66    0.091   325.64
2024.76    0.092   323.48
2024.86    0.093   321.39
2024.96    0.094   319.35
2025.06    0.095   317.35
2025.16    0.096   315.38
2025.26    0.096   313.41
2025.36    0.095   311.44
2025.46    0.094   309.44
2025.56    0.093   307.40
2025.66    0.091   305.29
2025.76    0.089   303.07
2025.86    0.086   300.71
2025.96    0.082   298.16
2026.06    0.078   295.33
2026.16    0.073   292.14
2026.26    0.067   288.46
2026.36    0.061   284.08
2026.46    0.055   278.73
2026.56    0.049   272.02
2026.66    0.043   263.39
2026.76    0.038   252.23
2026.86    0.034   238.15
2026.96    0.033   221.79
2027.06    0.034   205.16
2027.16    0.037   190.49
2027.26    0.042   178.76
2027.36    0.048   169.75
2027.46    0.054   162.84
2027.56    0.061   157.47
2027.66    0.068   153.19
2027.76    0.075   149.72
2027.86    0.082   146.83
2027.96    0.089   144.39
2028.06    0.096   142.29
2028.16    0.102   140.45
2028.26    0.108   138.83
2028.36    0.114   137.38
2028.46    0.120   136.07
2028.56    0.125   134.88
2028.66    0.131   133.79
2028.76    0.136   132.77
2028.86    0.140   131.83
2028.96    0.145   130.95
2029.06    0.149   130.12
2029.16    0.153   129.34
2029.26    0.157   128.59
2029.36    0.161   127.88
2029.46    0.164   127.20
2029.56    0.168   126.55
2029.66    0.171   125.92
2029.76    0.174   125.32
2029.86    0.176   124.73
2029.96    0.179   124.17
2030.06    0.181   123.61
2030.16    0.184   123.07
2030.26    0.186   122.55
2030.36    0.188   122.03
2030.46    0.189   121.52
2030.56    0.191   121.03
2030.66    0.192   120.54
2030.76    0.194   120.05
2030.86    0.195   119.58
2030.96    0.196   119.11
2031.06    0.197   118.64
2031.16    0.197   118.18
2031.26    0.198   117.72
2031.36    0.198   117.26
2031.46    0.199   116.80
2031.56    0.199   116.35
2031.66    0.199   115.90
2031.76    0.199   115.45
2031.86    0.199   114.99
2031.96    0.199   114.54
2032.06    0.199   114.09
2032.16    0.198   113.63
2032.26    0.198   113.17
2032.36    0.197   112.71
2032.46    0.196   112.25
2032.56    0.196   111.78
2032.66    0.195   111.31
2032.76    0.194   110.83

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 16:38:19