Double Star Calculator - Orbit

Orbital Elements for PAT8

WDS:	PAT8	WDS ID/Discoverer
P:	19.770	Orbital period (years)
a:	0.201	Semi-major axis (arcseconds)
i:	63.0	Inclination (degrees)
Ω:	119.6	Longitude of ascending node (degrees)
T:	2017.390	Epoch of periastron passage (year)
e:	0.649	Eccentricity
ω:	273.7	Longitude of periastron (degrees)
Start-Year:	2015.115	Year
End-Year:	2034.885	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for PAT8
Position:	042648.19+105216.0	Epoch-2000 right ascension and declination
WDS-ID:	04268+1052	WDS designation
Discoverer Code:	PAT8	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	286820	HD catalog number
Hipparcos number:	20751	Hipparcos catalog number
V1:	7.4	Magnitude of the primary
V2:	8.0	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	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:	Tok2021c	Reference

Double Star Orbit for PAT8

WDS 6th Orbit including measures of PAT8

-- 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 PAT8

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.150   209.03
--------------------------
2015.12    0.159   286.71
2015.21    0.156   287.73
2015.31    0.154   288.79
2015.41    0.151   289.89
2015.51    0.148   291.03
2015.61    0.144   292.22
2015.71    0.141   293.47
2015.81    0.137   294.80
2015.91    0.132   296.20
2016.01    0.127   297.71
2016.11    0.122   299.34
2016.21    0.117   301.12
2016.31    0.111   303.09
2016.41    0.104   305.30
2016.51    0.097   307.82
2016.61    0.089   310.76
2016.71    0.081   314.28
2016.81    0.072   318.63
2016.91    0.063   324.22
2017.01    0.054   331.75
2017.11    0.045   342.39
2017.21    0.037   357.87
2017.31    0.033    19.31
2017.41    0.033    43.71
2017.51    0.038    64.62
2017.61    0.045    79.56
2017.71    0.054    89.87
2017.81    0.064    97.22
2017.91    0.072   102.73
2018.01    0.081   107.05
2018.11    0.089   110.59
2018.21    0.096   113.57
2018.31    0.103   116.15
2018.41    0.109   118.43
2018.51    0.114   120.48
2018.61    0.119   122.35
2018.71    0.124   124.08
2018.81    0.128   125.69
2018.91    0.131   127.21
2019.01    0.135   128.64
2019.11    0.138   130.01
2019.21    0.141   131.33
2019.31    0.143   132.59
2019.41    0.145   133.81
2019.51    0.147   135.00
2019.61    0.149   136.15
2019.71    0.151   137.28
2019.81    0.152   138.38
2019.91    0.154   139.47
2020.01    0.155   140.53
2020.11    0.156   141.58
2020.21    0.157   142.62
2020.31    0.158   143.65
2020.41    0.158   144.66
2020.51    0.159   145.67
2020.61    0.160   146.67
2020.71    0.160   147.67
2020.81    0.160   148.66
2020.91    0.161   149.64
2021.01    0.161   150.62
2021.11    0.161   151.60
2021.21    0.161   152.58
2021.31    0.161   153.56
2021.41    0.161   154.54
2021.51    0.161   155.52
2021.61    0.161   156.50
2021.71    0.161   157.48
2021.81    0.161   158.46
2021.91    0.161   159.45
2022.01    0.160   160.43
2022.11    0.160   161.42
2022.21    0.160   162.42
2022.31    0.159   163.41
2022.41    0.159   164.42
2022.51    0.159   165.42
2022.61    0.158   166.43
2022.71    0.158   167.45
2022.81    0.158   168.47
2022.91    0.157   169.49
2023.01    0.157   170.52
2023.11    0.157   171.55
2023.21    0.156   172.59
2023.31    0.156   173.64
2023.41    0.155   174.69
2023.51    0.155   175.75
2023.61    0.155   176.81
2023.71    0.154   177.87
2023.81    0.154   178.94
2023.91    0.153   180.02
2024.01    0.153   181.10
2024.11    0.153   182.19
2024.21    0.152   183.28
2024.31    0.152   184.38
2024.41    0.152   185.48
2024.51    0.151   186.58
2024.61    0.151   187.69
2024.71    0.151   188.81
2024.81    0.151   189.92
2024.91    0.150   191.05
2025.01    0.150   192.17
2025.11    0.150   193.30
2025.21    0.150   194.43
2025.31    0.150   195.56
2025.41    0.150   196.69
2025.51    0.150   197.83
2025.61    0.149   198.96
2025.71    0.149   200.10
2025.81    0.149   201.24
2025.91    0.149   202.38
2026.01    0.149   203.52
2026.11    0.149   204.66
2026.21    0.149   205.79
2026.31    0.150   206.93
2026.41    0.150   208.06
2026.51    0.150   209.20
2026.61    0.150   210.33
2026.71    0.150   211.46
2026.81    0.150   212.58
2026.91    0.151   213.70
2027.01    0.151   214.82
2027.11    0.151   215.93
2027.21    0.151   217.04
2027.31    0.152   218.15
2027.41    0.152   219.25
2027.51    0.153   220.34
2027.61    0.153   221.43
2027.71    0.153   222.52
2027.81    0.154   223.59
2027.91    0.154   224.67
2028.01    0.155   225.73
2028.11    0.155   226.79
2028.21    0.156   227.84
2028.31    0.156   228.89
2028.41    0.157   229.92
2028.51    0.157   230.95
2028.61    0.158   231.98
2028.71    0.158   232.99
2028.81    0.159   234.00
2028.91    0.160   235.00
2029.01    0.160   236.00
2029.11    0.161   236.98
2029.21    0.161   237.96
2029.31    0.162   238.93
2029.41    0.163   239.89
2029.51    0.163   240.85
2029.61    0.164   241.80
2029.71    0.165   242.74
2029.81    0.165   243.67
2029.91    0.166   244.60
2030.01    0.167   245.51
2030.11    0.167   246.43
2030.21    0.168   247.33
2030.31    0.169   248.23
2030.41    0.169   249.12
2030.51    0.170   250.00
2030.61    0.171   250.88
2030.71    0.171   251.75
2030.81    0.172   252.61
2030.91    0.172   253.47
2031.01    0.173   254.32
2031.11    0.173   255.17
2031.21    0.174   256.01
2031.31    0.175   256.85
2031.41    0.175   257.68
2031.51    0.175   258.51
2031.61    0.176   259.33
2031.71    0.176   260.15
2031.81    0.177   260.97
2031.91    0.177   261.78
2032.01    0.177   262.59
2032.11    0.178   263.39
2032.21    0.178   264.20
2032.31    0.178   265.00
2032.41    0.178   265.80
2032.51    0.179   266.59
2032.61    0.179   267.39
2032.71    0.179   268.19
2032.81    0.179   268.98
2032.91    0.179   269.78
2033.01    0.178   270.58
2033.11    0.178   271.38
2033.21    0.178   272.18
2033.31    0.178   272.98
2033.41    0.177   273.79
2033.51    0.177   274.60
2033.61    0.176   275.42
2033.71    0.175   276.24
2033.81    0.175   277.07
2033.91    0.174   277.90
2034.01    0.173   278.75
2034.11    0.172   279.61
2034.21    0.171   280.47
2034.31    0.169   281.35
2034.41    0.168   282.25
2034.51    0.166   283.16
2034.61    0.164   284.09
2034.71    0.163   285.04
2034.81    0.160   286.01

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 15:24:07