Double Star Calculator - Orbit

Orbital Elements for A2298AB

WDS:	A2298AB	WDS ID/Discoverer
P:	29.161	Orbital period (years)
a:	0.1989	Semi-major axis (arcseconds)
i:	102.7	Inclination (degrees)
Ω:	287.0	Longitude of ascending node (degrees)
T:	2012.529	Epoch of periastron passage (year)
e:	0.401	Eccentricity
ω:	312.9	Longitude of periastron (degrees)
Start-Year:	2010.4195	Year
End-Year:	2039.5805	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2298AB
Position:	231238.55+024111.7	Epoch-2000 right ascension and declination
WDS-ID:	23126+0241	WDS designation
Discoverer Code:	A2298AB	Discover designation and components
ADS number:	16591	Aitken Double Star catalog
HD number:	219018	HD catalog number
Hipparcos number:	114576	Hipparcos catalog number
V1:	8.4	Magnitude of the primary
V2:	8.5	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	Tok2024c	Reference

Double Star Orbit for A2298AB

WDS 6th Orbit including measures of A2298AB

-- 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 A2298AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.183   121.99
--------------------------
2010.42    0.050    71.01
2010.52    0.045    66.62
2010.62    0.041    61.25
2010.72    0.037    54.67
2010.82    0.033    46.60
2010.92    0.031    36.91
2011.02    0.029    25.72
2011.12    0.028    13.61
2011.22    0.029     1.56
2011.32    0.031   350.50
2011.42    0.034   340.97
2011.52    0.037   333.06
2011.62    0.041   326.60
2011.72    0.045   321.32
2011.82    0.050   316.99
2011.92    0.055   313.40
2012.02    0.059   310.38
2012.12    0.064   307.80
2012.22    0.069   305.59
2012.32    0.074   303.66
2012.42    0.078   301.96
2012.52    0.083   300.45
2012.62    0.087   299.09
2012.72    0.092   297.86
2012.82    0.096   296.73
2012.92    0.100   295.70
2013.02    0.103   294.75
2013.12    0.107   293.86
2013.22    0.110   293.02
2013.32    0.113   292.23
2013.42    0.116   291.49
2013.52    0.119   290.78
2013.62    0.122   290.10
2013.72    0.124   289.44
2013.82    0.126   288.81
2013.92    0.128   288.20
2014.02    0.130   287.61
2014.12    0.131   287.03
2014.22    0.132   286.46
2014.32    0.133   285.91
2014.42    0.134   285.36
2014.52    0.135   284.82
2014.62    0.136   284.28
2014.72    0.136   283.75
2014.82    0.136   283.21
2014.92    0.136   282.68
2015.02    0.136   282.15
2015.12    0.136   281.62
2015.22    0.135   281.08
2015.32    0.135   280.55
2015.42    0.134   280.00
2015.52    0.133   279.45
2015.62    0.132   278.89
2015.72    0.131   278.33
2015.82    0.130   277.75
2015.92    0.129   277.16
2016.02    0.127   276.57
2016.12    0.126   275.95
2016.22    0.124   275.33
2016.32    0.123   274.68
2016.42    0.121   274.02
2016.52    0.119   273.34
2016.62    0.118   272.64
2016.72    0.116   271.92
2016.82    0.114   271.17
2016.92    0.112   270.40
2017.02    0.110   269.59
2017.12    0.108   268.76
2017.22    0.105   267.89
2017.32    0.103   266.98
2017.42    0.101   266.04
2017.52    0.099   265.05
2017.62    0.096   264.02
2017.72    0.094   262.94
2017.82    0.092   261.80
2017.92    0.090   260.61
2018.02    0.087   259.36
2018.12    0.085   258.03
2018.22    0.083   256.64
2018.32    0.081   255.16
2018.42    0.078   253.60
2018.52    0.076   251.95
2018.62    0.074   250.20
2018.72    0.072   248.35
2018.82    0.070   246.38
2018.92    0.068   244.30
2019.02    0.066   242.09
2019.12    0.064   239.74
2019.22    0.062   237.26
2019.32    0.060   234.64
2019.42    0.059   231.88
2019.52    0.057   228.97
2019.62    0.056   225.92
2019.72    0.055   222.73
2019.82    0.054   219.42
2019.92    0.053   215.99
2020.02    0.053   212.47
2020.12    0.052   208.87
2020.22    0.052   205.22
2020.32    0.052   201.55
2020.42    0.052   197.89
2020.52    0.052   194.26
2020.62    0.053   190.69
2020.72    0.053   187.20
2020.82    0.054   183.81
2020.92    0.055   180.54
2021.02    0.057   177.40
2021.12    0.058   174.41
2021.22    0.059   171.55
2021.32    0.061   168.85
2021.42    0.063   166.29
2021.52    0.065   163.87
2021.62    0.067   161.58
2021.72    0.069   159.43
2021.82    0.071   157.41
2021.92    0.073   155.50
2022.02    0.075   153.71
2022.12    0.077   152.02
2022.22    0.080   150.42
2022.32    0.082   148.92
2022.42    0.085   147.50
2022.52    0.087   146.16
2022.62    0.089   144.90
2022.72    0.092   143.70
2022.82    0.094   142.57
2022.92    0.097   141.49
2023.02    0.099   140.47
2023.12    0.102   139.50
2023.22    0.104   138.58
2023.32    0.107   137.70
2023.42    0.110   136.86
2023.52    0.112   136.06
2023.62    0.115   135.29
2023.72    0.117   134.56
2023.82    0.120   133.86
2023.92    0.122   133.19
2024.02    0.125   132.55
2024.12    0.127   131.93
2024.22    0.130   131.33
2024.32    0.132   130.76
2024.42    0.135   130.21
2024.52    0.137   129.68
2024.62    0.140   129.17
2024.72    0.142   128.68
2024.82    0.145   128.20
2024.92    0.147   127.74
2025.02    0.150   127.29
2025.12    0.152   126.86
2025.22    0.154   126.44
2025.32    0.157   126.03
2025.42    0.159   125.64
2025.52    0.161   125.25
2025.62    0.164   124.88
2025.72    0.166   124.52
2025.82    0.168   124.17
2025.92    0.170   123.82
2026.02    0.173   123.49
2026.12    0.175   123.16
2026.22    0.177   122.84
2026.32    0.179   122.53
2026.42    0.181   122.23
2026.52    0.183   121.93
2026.62    0.185   121.64
2026.72    0.187   121.36
2026.82    0.189   121.08
2026.92    0.191   120.81
2027.02    0.193   120.55
2027.12    0.195   120.28
2027.22    0.197   120.03
2027.32    0.199   119.78
2027.42    0.201   119.53
2027.52    0.202   119.29
2027.62    0.204   119.05
2027.72    0.206   118.82
2027.82    0.208   118.59
2027.92    0.209   118.36
2028.02    0.211   118.14
2028.12    0.213   117.92
2028.22    0.214   117.70
2028.32    0.216   117.49
2028.42    0.217   117.28
2028.52    0.219   117.07
2028.62    0.220   116.87
2028.72    0.221   116.67
2028.82    0.223   116.47
2028.92    0.224   116.27
2029.02    0.225   116.08
2029.12    0.227   115.88
2029.22    0.228   115.69
2029.32    0.229   115.51
2029.42    0.230   115.32
2029.52    0.231   115.13
2029.62    0.232   114.95
2029.72    0.233   114.77
2029.82    0.234   114.59
2029.92    0.235   114.41
2030.02    0.236   114.23
2030.12    0.237   114.06
2030.22    0.238   113.88
2030.32    0.239   113.71
2030.42    0.239   113.54
2030.52    0.240   113.37
2030.62    0.241   113.20
2030.72    0.241   113.03
2030.82    0.242   112.86
2030.92    0.242   112.69
2031.02    0.243   112.53
2031.12    0.243   112.36
2031.22    0.244   112.19
2031.32    0.244   112.03
2031.42    0.244   111.86
2031.52    0.245   111.70
2031.62    0.245   111.53
2031.72    0.245   111.37
2031.82    0.245   111.21
2031.92    0.245   111.04
2032.02    0.245   110.88
2032.12    0.245   110.72
2032.22    0.245   110.55
2032.32    0.245   110.39
2032.42    0.244   110.22
2032.52    0.244   110.06
2032.62    0.244   109.89
2032.72    0.243   109.73
2032.82    0.243   109.56
2032.92    0.242   109.39
2033.02    0.242   109.23
2033.12    0.241   109.06
2033.22    0.241   108.89
2033.32    0.240   108.72
2033.42    0.239   108.55
2033.52    0.238   108.37
2033.62    0.237   108.20
2033.72    0.236   108.02
2033.82    0.235   107.85
2033.92    0.234   107.67
2034.02    0.233   107.49
2034.12    0.232   107.31
2034.22    0.230   107.12
2034.32    0.229   106.93
2034.42    0.228   106.75
2034.52    0.226   106.56
2034.62    0.225   106.36
2034.72    0.223   106.17
2034.82    0.221   105.97
2034.92    0.219   105.76
2035.02    0.218   105.56
2035.12    0.216   105.35
2035.22    0.214   105.13
2035.32    0.212   104.92
2035.42    0.209   104.70
2035.52    0.207   104.47
2035.62    0.205   104.24
2035.72    0.203   104.00
2035.82    0.200   103.76
2035.92    0.198   103.51
2036.02    0.195   103.25
2036.12    0.192   102.99
2036.22    0.189   102.72
2036.32    0.187   102.44
2036.42    0.184   102.16
2036.52    0.181   101.86
2036.62    0.178   101.55
2036.72    0.174   101.24
2036.82    0.171   100.91
2036.92    0.168   100.56
2037.02    0.164   100.21
2037.12    0.161    99.83
2037.22    0.157    99.44
2037.32    0.153    99.03
2037.42    0.149    98.61
2037.52    0.146    98.15
2037.62    0.142    97.68
2037.72    0.138    97.17
2037.82    0.133    96.64
2037.92    0.129    96.06
2038.02    0.125    95.45
2038.12    0.120    94.80
2038.22    0.116    94.10
2038.32    0.111    93.33
2038.42    0.107    92.50
2038.52    0.102    91.60
2038.62    0.097    90.61
2038.72    0.092    89.51
2038.82    0.087    88.29
2038.92    0.082    86.93
2039.02    0.077    85.39
2039.12    0.072    83.64
2039.22    0.067    81.63
2039.32    0.062    79.29
2039.42    0.058    76.55
2039.52    0.053    73.30

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 18:48:55