Double Star Calculator - Orbit

Orbital Elements for A2817

WDS:	A2817	WDS ID/Discoverer
P:	31.670	Orbital period (years)
a:	0.1941	Semi-major axis (arcseconds)
i:	36.5	Inclination (degrees)
Ω:	233.7	Longitude of ascending node (degrees)
T:	2015.240	Epoch of periastron passage (year)
e:	0.286	Eccentricity
ω:	143.6	Longitude of periastron (degrees)
Start-Year:	2009.165	Year
End-Year:	2040.835	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2817
Position:	063125.83+074920.5	Epoch-2000 right ascension and declination
WDS-ID:	06314+0749	WDS designation
Discoverer Code:	A2817	Discover designation and components
ADS number:	5159	Aitken Double Star catalog
HD number:	46055	HD catalog number
Hipparcos number:	31089	Hipparcos catalog number
V1:	9.56	Magnitude of the primary
V2:	8.89	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:		Flags
Ephemerides:		Ephemerides
Code:	Tok2020h	Reference

Double Star Orbit for A2817

WDS 6th Orbit including measures of A2817

-- 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 A2817

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.197   170.73
--------------------------
2009.16    0.174   269.07
2009.26    0.173   270.17
2009.36    0.171   271.29
2009.46    0.169   272.43
2009.56    0.167   273.60
2009.66    0.165   274.79
2009.76    0.164   276.01
2009.86    0.162   277.26
2009.96    0.160   278.53
2010.06    0.158   279.83
2010.16    0.156   281.16
2010.26    0.155   282.53
2010.36    0.153   283.92
2010.46    0.151   285.35
2010.56    0.149   286.81
2010.66    0.148   288.30
2010.76    0.146   289.83
2010.86    0.144   291.40
2010.96    0.143   293.00
2011.06    0.141   294.64
2011.16    0.139   296.32
2011.26    0.138   298.03
2011.36    0.136   299.79
2011.46    0.135   301.58
2011.56    0.133   303.41
2011.66    0.132   305.28
2011.76    0.131   307.19
2011.86    0.129   309.14
2011.96    0.128   311.13
2012.06    0.127   313.15
2012.16    0.126   315.21
2012.26    0.125   317.31
2012.36    0.124   319.43
2012.46    0.123   321.59
2012.56    0.122   323.78
2012.66    0.122   325.99
2012.76    0.121   328.23
2012.86    0.121   330.48
2012.96    0.120   332.76
2013.06    0.120   335.05
2013.16    0.120   337.36
2013.26    0.119   339.67
2013.36    0.119   341.99
2013.46    0.119   344.31
2013.56    0.119   346.63
2013.66    0.119   348.95
2013.76    0.120   351.26
2013.86    0.120   353.56
2013.96    0.120   355.84
2014.06    0.121   358.11
2014.16    0.121     0.37
2014.26    0.122     2.60
2014.36    0.122     4.81
2014.46    0.123     7.00
2014.56    0.124     9.16
2014.66    0.125    11.30
2014.76    0.125    13.41
2014.86    0.126    15.49
2014.96    0.127    17.54
2015.06    0.128    19.57
2015.16    0.129    21.57
2015.26    0.130    23.54
2015.36    0.131    25.48
2015.46    0.132    27.39
2015.56    0.133    29.28
2015.66    0.134    31.13
2015.76    0.135    32.97
2015.86    0.136    34.78
2015.96    0.136    36.56
2016.06    0.137    38.32
2016.16    0.138    40.05
2016.26    0.139    41.77
2016.36    0.140    43.46
2016.46    0.141    45.13
2016.56    0.142    46.78
2016.66    0.142    48.42
2016.76    0.143    50.03
2016.86    0.144    51.63
2016.96    0.145    53.22
2017.06    0.145    54.79
2017.16    0.146    56.34
2017.26    0.147    57.88
2017.36    0.147    59.41
2017.46    0.148    60.93
2017.56    0.148    62.43
2017.66    0.149    63.93
2017.76    0.149    65.41
2017.86    0.150    66.89
2017.96    0.150    68.35
2018.06    0.151    69.81
2018.16    0.151    71.26
2018.26    0.151    72.71
2018.36    0.152    74.14
2018.46    0.152    75.57
2018.56    0.152    77.00
2018.66    0.153    78.42
2018.76    0.153    79.83
2018.86    0.153    81.24
2018.96    0.153    82.64
2019.06    0.154    84.04
2019.16    0.154    85.43
2019.26    0.154    86.82
2019.36    0.154    88.21
2019.46    0.155    89.59
2019.56    0.155    90.97
2019.66    0.155    92.35
2019.76    0.155    93.72
2019.86    0.155    95.08
2019.96    0.156    96.45
2020.06    0.156    97.80
2020.16    0.156    99.16
2020.26    0.156   100.51
2020.36    0.157   101.86
2020.46    0.157   103.20
2020.56    0.157   104.54
2020.66    0.157   105.88
2020.76    0.158   107.21
2020.86    0.158   108.53
2020.96    0.158   109.85
2021.06    0.159   111.17
2021.16    0.159   112.48
2021.26    0.159   113.78
2021.36    0.160   115.08
2021.46    0.160   116.38
2021.56    0.160   117.66
2021.66    0.161   118.95
2021.76    0.161   120.22
2021.86    0.161   121.49
2021.96    0.162   122.75
2022.06    0.162   124.01
2022.16    0.163   125.25
2022.26    0.163   126.49
2022.36    0.164   127.73
2022.46    0.164   128.95
2022.56    0.165   130.17
2022.66    0.166   131.37
2022.76    0.166   132.57
2022.86    0.167   133.77
2022.96    0.167   134.95
2023.06    0.168   136.12
2023.16    0.169   137.29
2023.26    0.169   138.44
2023.36    0.170   139.59
2023.46    0.171   140.73
2023.56    0.171   141.86
2023.66    0.172   142.98
2023.76    0.173   144.09
2023.86    0.174   145.19
2023.96    0.174   146.28
2024.06    0.175   147.36
2024.16    0.176   148.43
2024.26    0.177   149.49
2024.36    0.178   150.54
2024.46    0.178   151.58
2024.56    0.179   152.61
2024.66    0.180   153.64
2024.76    0.181   154.65
2024.86    0.182   155.65
2024.96    0.183   156.64
2025.06    0.184   157.63
2025.16    0.184   158.60
2025.26    0.185   159.57
2025.36    0.186   160.52
2025.46    0.187   161.47
2025.56    0.188   162.40
2025.66    0.189   163.33
2025.76    0.190   164.25
2025.86    0.191   165.16
2025.96    0.192   166.06
2026.06    0.193   166.95
2026.16    0.194   167.83
2026.26    0.195   168.71
2026.36    0.196   169.58
2026.46    0.197   170.43
2026.56    0.198   171.28
2026.66    0.198   172.12
2026.76    0.199   172.96
2026.86    0.200   173.78
2026.96    0.201   174.60
2027.06    0.202   175.41
2027.16    0.203   176.21
2027.26    0.204   177.01
2027.36    0.205   177.79
2027.46    0.206   178.58
2027.56    0.207   179.35
2027.66    0.208   180.12
2027.76    0.209   180.88
2027.86    0.210   181.63
2027.96    0.211   182.38
2028.06    0.212   183.12
2028.16    0.212   183.85
2028.26    0.213   184.58
2028.36    0.214   185.30
2028.46    0.215   186.02
2028.56    0.216   186.73
2028.66    0.217   187.43
2028.76    0.218   188.13
2028.86    0.218   188.83
2028.96    0.219   189.51
2029.06    0.220   190.20
2029.16    0.221   190.88
2029.26    0.222   191.55
2029.36    0.222   192.22
2029.46    0.223   192.89
2029.56    0.224   193.55
2029.66    0.225   194.20
2029.76    0.225   194.85
2029.86    0.226   195.50
2029.96    0.227   196.14
2030.06    0.227   196.78
2030.16    0.228   197.42
2030.26    0.229   198.05
2030.36    0.229   198.68
2030.46    0.230   199.30
2030.56    0.231   199.92
2030.66    0.231   200.54
2030.76    0.232   201.16
2030.86    0.232   201.77
2030.96    0.233   202.38
2031.06    0.233   202.99
2031.16    0.234   203.59
2031.26    0.234   204.19
2031.36    0.235   204.79
2031.46    0.235   205.39
2031.56    0.236   205.98
2031.66    0.236   206.57
2031.76    0.237   207.16
2031.86    0.237   207.75
2031.96    0.237   208.34
2032.06    0.238   208.92
2032.16    0.238   209.50
2032.26    0.238   210.08
2032.36    0.239   210.66
2032.46    0.239   211.24
2032.56    0.239   211.82
2032.66    0.239   212.39
2032.76    0.240   212.97
2032.86    0.240   213.54
2032.96    0.240   214.12
2033.06    0.240   214.69
2033.16    0.240   215.26
2033.26    0.240   215.83
2033.36    0.240   216.40
2033.46    0.240   216.97
2033.56    0.240   217.54
2033.66    0.240   218.11
2033.76    0.240   218.68
2033.86    0.240   219.26
2033.96    0.240   219.83
2034.06    0.240   220.40
2034.16    0.240   220.97
2034.26    0.240   221.54
2034.36    0.240   222.11
2034.46    0.240   222.69
2034.56    0.239   223.26
2034.66    0.239   223.84
2034.76    0.239   224.42
2034.86    0.239   224.99
2034.96    0.238   225.57
2035.06    0.238   226.16
2035.16    0.238   226.74
2035.26    0.237   227.32
2035.36    0.237   227.91
2035.46    0.236   228.50
2035.56    0.236   229.09
2035.66    0.235   229.69
2035.76    0.235   230.28
2035.86    0.234   230.88
2035.96    0.234   231.48
2036.06    0.233   232.09
2036.16    0.233   232.70
2036.26    0.232   233.31
2036.36    0.231   233.92
2036.46    0.231   234.54
2036.56    0.230   235.16
2036.66    0.229   235.79
2036.76    0.228   236.42
2036.86    0.227   237.06
2036.96    0.227   237.70
2037.06    0.226   238.34
2037.16    0.225   238.99
2037.26    0.224   239.65
2037.36    0.223   240.31
2037.46    0.222   240.97
2037.56    0.221   241.64
2037.66    0.220   242.32
2037.76    0.219   243.01
2037.86    0.218   243.70
2037.96    0.217   244.40
2038.06    0.216   245.10
2038.16    0.214   245.82
2038.26    0.213   246.54
2038.36    0.212   247.27
2038.46    0.211   248.01
2038.56    0.209   248.76
2038.66    0.208   249.51
2038.76    0.207   250.28
2038.86    0.205   251.05
2038.96    0.204   251.84
2039.06    0.203   252.64
2039.16    0.201   253.45
2039.26    0.200   254.27
2039.36    0.198   255.10
2039.46    0.197   255.94
2039.56    0.195   256.80
2039.66    0.194   257.67
2039.76    0.192   258.56
2039.86    0.191   259.46
2039.96    0.189   260.37
2040.06    0.187   261.30
2040.16    0.186   262.25
2040.26    0.184   263.22
2040.36    0.182   264.20
2040.46    0.181   265.20
2040.56    0.179   266.22
2040.66    0.177   267.26
2040.76    0.176   268.32

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 15:47:36