Double Star Calculator - Orbit

Orbital Elements for CHR42AA,AB

WDS:	CHR42AA,AB	WDS ID/Discoverer
P:	21.540	Orbital period (years)
a:	0.143	Semi-major axis (arcseconds)
i:	53.7	Inclination (degrees)
Ω:	312.4	Longitude of ascending node (degrees)
T:	1994.640	Epoch of periastron passage (year)
e:	0.844	Eccentricity
ω:	41.9	Longitude of periastron (degrees)
Start-Year:	2014.23	Year
End-Year:	2035.77	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR42AA,AB
Position:	143728.49+021638.7	Epoch-2000 right ascension and declination
WDS-ID:	14375+0217	WDS designation
Discoverer Code:	CHR42AA,AB	Discover designation and components
ADS number:	9323	Aitken Double Star catalog
HD number:	128563	HD catalog number
Hipparcos number:	71510	Hipparcos catalog number
V1:	6.6	Magnitude of the primary
V2:	8.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	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:	Tok2015c	Reference

Double Star Orbit for CHR42AA,AB

WDS 6th Orbit including measures of CHR42AA,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 CHR42AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.224   159.40
--------------------------
2014.23    0.075   205.78
2014.33    0.072   207.81
2014.43    0.069   210.02
2014.53    0.066   212.43
2014.63    0.063   215.06
2014.73    0.060   217.95
2014.83    0.057   221.14
2014.93    0.054   224.67
2015.03    0.051   228.60
2015.13    0.048   232.99
2015.23    0.046   237.90
2015.33    0.043   243.40
2015.43    0.041   249.58
2015.53    0.038   256.53
2015.63    0.036   264.33
2015.73    0.034   273.08
2015.83    0.032   282.97
2015.93    0.030   294.35
2016.03    0.026   308.14
2016.13    0.022   327.01
2016.23    0.016   358.16
2016.33    0.016    44.03
2016.43    0.022    77.55
2016.53    0.030    94.66
2016.63    0.038   104.29
2016.73    0.046   110.48
2016.83    0.054   114.88
2016.93    0.061   118.22
2017.03    0.067   120.88
2017.13    0.074   123.06
2017.23    0.080   124.91
2017.33    0.085   126.51
2017.43    0.091   127.92
2017.53    0.096   129.16
2017.63    0.101   130.29
2017.73    0.105   131.31
2017.83    0.110   132.25
2017.93    0.114   133.11
2018.03    0.118   133.92
2018.13    0.122   134.66
2018.23    0.126   135.37
2018.33    0.130   136.03
2018.43    0.134   136.65
2018.53    0.137   137.25
2018.63    0.140   137.81
2018.73    0.144   138.35
2018.83    0.147   138.86
2018.93    0.150   139.36
2019.03    0.153   139.83
2019.13    0.156   140.29
2019.23    0.158   140.73
2019.33    0.161   141.15
2019.43    0.164   141.57
2019.53    0.166   141.96
2019.63    0.169   142.35
2019.73    0.171   142.73
2019.83    0.173   143.09
2019.93    0.175   143.45
2020.03    0.178   143.80
2020.13    0.180   144.14
2020.23    0.182   144.47
2020.33    0.184   144.80
2020.43    0.186   145.11
2020.53    0.188   145.43
2020.63    0.189   145.73
2020.73    0.191   146.03
2020.83    0.193   146.33
2020.93    0.194   146.62
2021.03    0.196   146.90
2021.13    0.198   147.18
2021.23    0.199   147.46
2021.33    0.200   147.73
2021.43    0.202   148.00
2021.53    0.203   148.26
2021.63    0.204   148.52
2021.73    0.206   148.78
2021.83    0.207   149.04
2021.93    0.208   149.29
2022.03    0.209   149.54
2022.13    0.210   149.78
2022.23    0.211   150.03
2022.33    0.212   150.27
2022.43    0.213   150.51
2022.53    0.214   150.75
2022.63    0.215   150.98
2022.73    0.216   151.22
2022.83    0.217   151.45
2022.93    0.218   151.68
2023.03    0.218   151.91
2023.13    0.219   152.13
2023.23    0.220   152.36
2023.33    0.220   152.58
2023.43    0.221   152.81
2023.53    0.221   153.03
2023.63    0.222   153.25
2023.73    0.223   153.47
2023.83    0.223   153.69
2023.93    0.223   153.90
2024.03    0.224   154.12
2024.13    0.224   154.34
2024.23    0.225   154.55
2024.33    0.225   154.77
2024.43    0.225   154.98
2024.53    0.225   155.20
2024.63    0.226   155.41
2024.73    0.226   155.62
2024.83    0.226   155.84
2024.93    0.226   156.05
2025.03    0.226   156.26
2025.13    0.226   156.47
2025.23    0.226   156.69
2025.33    0.226   156.90
2025.43    0.226   157.11
2025.53    0.226   157.32
2025.63    0.226   157.53
2025.73    0.226   157.75
2025.83    0.226   157.96
2025.93    0.226   158.17
2026.03    0.225   158.39
2026.13    0.225   158.60
2026.23    0.225   158.81
2026.33    0.225   159.03
2026.43    0.224   159.25
2026.53    0.224   159.46
2026.63    0.224   159.68
2026.73    0.223   159.90
2026.83    0.223   160.11
2026.93    0.222   160.33
2027.03    0.222   160.55
2027.13    0.221   160.77
2027.23    0.221   161.00
2027.33    0.220   161.22
2027.43    0.220   161.44
2027.53    0.219   161.67
2027.63    0.218   161.89
2027.73    0.218   162.12
2027.83    0.217   162.35
2027.93    0.216   162.58
2028.03    0.216   162.82
2028.13    0.215   163.05
2028.23    0.214   163.29
2028.33    0.213   163.52
2028.43    0.212   163.76
2028.53    0.212   164.00
2028.63    0.211   164.25
2028.73    0.210   164.49
2028.83    0.209   164.74
2028.93    0.208   164.99
2029.03    0.207   165.24
2029.13    0.206   165.50
2029.23    0.205   165.76
2029.33    0.204   166.02
2029.43    0.203   166.28
2029.53    0.201   166.55
2029.63    0.200   166.81
2029.73    0.199   167.09
2029.83    0.198   167.36
2029.93    0.197   167.64
2030.03    0.195   167.92
2030.13    0.194   168.21
2030.23    0.193   168.50
2030.33    0.191   168.79
2030.43    0.190   169.09
2030.53    0.189   169.39
2030.63    0.187   169.70
2030.73    0.186   170.01
2030.83    0.184   170.33
2030.93    0.183   170.65
2031.03    0.181   170.98
2031.13    0.180   171.31
2031.23    0.178   171.65
2031.33    0.177   172.00
2031.43    0.175   172.35
2031.53    0.173   172.71
2031.63    0.171   173.07
2031.73    0.170   173.44
2031.83    0.168   173.83
2031.93    0.166   174.21
2032.03    0.164   174.61
2032.13    0.163   175.02
2032.23    0.161   175.43
2032.33    0.159   175.86
2032.43    0.157   176.29
2032.53    0.155   176.74
2032.63    0.153   177.20
2032.73    0.151   177.67
2032.83    0.149   178.15
2032.93    0.147   178.65
2033.03    0.145   179.16
2033.13    0.142   179.69
2033.23    0.140   180.23
2033.33    0.138   180.79
2033.43    0.136   181.37
2033.53    0.134   181.97
2033.63    0.131   182.59
2033.73    0.129   183.23
2033.83    0.127   183.89
2033.93    0.124   184.58
2034.03    0.122   185.30
2034.13    0.119   186.05
2034.23    0.117   186.82
2034.33    0.114   187.64
2034.43    0.112   188.49
2034.53    0.109   189.38
2034.63    0.107   190.31
2034.73    0.104   191.29
2034.83    0.101   192.32
2034.93    0.098   193.41
2035.03    0.096   194.56
2035.13    0.093   195.78
2035.23    0.090   197.08
2035.33    0.087   198.45
2035.43    0.084   199.93
2035.53    0.082   201.50
2035.63    0.079   203.19
2035.73    0.076   205.01

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 17:07:08