Double Star Calculator - Orbit

Orbital Elements for YR13

WDS:	YR13	WDS ID/Discoverer
P:	23.480	Orbital period (years)
a:	0.5526	Semi-major axis (arcseconds)
i:	122.06	Inclination (degrees)
Ω:	49.62	Longitude of ascending node (degrees)
T:	2018.859	Epoch of periastron passage (year)
e:	0.6976	Eccentricity
ω:	246.72	Longitude of periastron (degrees)
Start-Year:	2013.26	Year
End-Year:	2036.74	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YR13
Position:	083625.45+671742.4	Epoch-2000 right ascension and declination
WDS-ID:	08364+6718	WDS designation
Discoverer Code:	YR13	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	42220	Hipparcos catalog number
V1:	9.3	Magnitude of the primary
V2:	12.1	Magnitude of the secondary
Equinox:		Equinox
Date:	2017	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	MnA2019	Reference

Double Star Orbit for YR13

WDS 6th Orbit including measures of YR13

-- 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 YR13

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.650    17.20
--------------------------
2013.26    0.399   312.24
2013.36    0.396   311.12
2013.46    0.394   309.98
2013.56    0.391   308.82
2013.66    0.388   307.64
2013.76    0.386   306.45
2013.86    0.383   305.25
2013.96    0.380   304.03
2014.06    0.378   302.79
2014.16    0.375   301.53
2014.26    0.373   300.26
2014.36    0.371   298.97
2014.46    0.368   297.67
2014.56    0.366   296.35
2014.66    0.364   295.01
2014.76    0.361   293.66
2014.86    0.359   292.28
2014.96    0.357   290.90
2015.06    0.355   289.49
2015.16    0.353   288.07
2015.26    0.351   286.63
2015.36    0.349   285.17
2015.46    0.347   283.70
2015.56    0.344   282.21
2015.66    0.342   280.70
2015.76    0.340   279.17
2015.86    0.338   277.62
2015.96    0.336   276.05
2016.06    0.334   274.47
2016.16    0.331   272.86
2016.26    0.329   271.22
2016.36    0.327   269.57
2016.46    0.324   267.89
2016.56    0.321   266.18
2016.66    0.319   264.44
2016.76    0.316   262.67
2016.86    0.312   260.86
2016.96    0.309   259.02
2017.06    0.305   257.13
2017.16    0.301   255.20
2017.26    0.297   253.20
2017.36    0.292   251.15
2017.46    0.286   249.01
2017.56    0.280   246.79
2017.66    0.273   244.47
2017.76    0.266   242.02
2017.86    0.257   239.42
2017.96    0.248   236.63
2018.06    0.237   233.60
2018.16    0.225   230.26
2018.26    0.211   226.50
2018.36    0.196   222.20
2018.46    0.179   217.10
2018.56    0.160   210.88
2018.66    0.141   202.97
2018.76    0.121   192.52
2018.86    0.105   178.42
2018.96    0.094   160.04
2019.06    0.092   138.97
2019.16    0.100   119.27
2019.26    0.116   103.75
2019.36    0.136    92.36
2019.46    0.158    84.01
2019.56    0.180    77.73
2019.66    0.202    72.83
2019.76    0.224    68.89
2019.86    0.244    65.64
2019.96    0.264    62.88
2020.06    0.283    60.50
2020.16    0.301    58.42
2020.26    0.318    56.56
2020.36    0.335    54.89
2020.46    0.350    53.38
2020.56    0.365    51.99
2020.66    0.379    50.70
2020.76    0.393    49.51
2020.86    0.406    48.39
2020.96    0.418    47.34
2021.06    0.430    46.35
2021.16    0.441    45.41
2021.26    0.452    44.52
2021.36    0.462    43.67
2021.46    0.472    42.85
2021.56    0.481    42.06
2021.66    0.490    41.31
2021.76    0.499    40.58
2021.86    0.507    39.87
2021.96    0.515    39.19
2022.06    0.522    38.53
2022.16    0.529    37.89
2022.26    0.536    37.26
2022.36    0.543    36.65
2022.46    0.549    36.05
2022.56    0.555    35.46
2022.66    0.561    34.89
2022.76    0.567    34.33
2022.86    0.572    33.78
2022.96    0.577    33.24
2023.06    0.582    32.71
2023.16    0.586    32.19
2023.26    0.591    31.68
2023.36    0.595    31.17
2023.46    0.599    30.67
2023.56    0.603    30.18
2023.66    0.606    29.69
2023.76    0.610    29.21
2023.86    0.613    28.73
2023.96    0.616    28.26
2024.06    0.619    27.79
2024.16    0.622    27.33
2024.26    0.625    26.87
2024.36    0.627    26.42
2024.46    0.629    25.97
2024.56    0.632    25.52
2024.66    0.634    25.08
2024.76    0.636    24.63
2024.86    0.637    24.19
2024.96    0.639    23.76
2025.06    0.641    23.32
2025.16    0.642    22.89
2025.26    0.643    22.46
2025.36    0.644    22.03
2025.46    0.645    21.60
2025.56    0.646    21.17
2025.66    0.647    20.75
2025.76    0.648    20.32
2025.86    0.649    19.90
2025.96    0.649    19.48
2026.06    0.649    19.05
2026.16    0.650    18.63
2026.26    0.650    18.21
2026.36    0.650    17.79
2026.46    0.650    17.37
2026.56    0.650    16.95
2026.66    0.650    16.52
2026.76    0.650    16.10
2026.86    0.649    15.68
2026.96    0.649    15.26
2027.06    0.648    14.84
2027.16    0.648    14.41
2027.26    0.647    13.99
2027.36    0.646    13.56
2027.46    0.646    13.13
2027.56    0.645    12.71
2027.66    0.644    12.28
2027.76    0.643    11.85
2027.86    0.642    11.42
2027.96    0.641    10.98
2028.06    0.639    10.55
2028.16    0.638    10.11
2028.26    0.637     9.67
2028.36    0.635     9.23
2028.46    0.634     8.79
2028.56    0.632     8.35
2028.66    0.631     7.90
2028.76    0.629     7.45
2028.86    0.627     7.00
2028.96    0.625     6.54
2029.06    0.623     6.09
2029.16    0.622     5.63
2029.26    0.620     5.17
2029.36    0.618     4.70
2029.46    0.616     4.23
2029.56    0.613     3.76
2029.66    0.611     3.29
2029.76    0.609     2.81
2029.86    0.607     2.33
2029.96    0.605     1.84
2030.06    0.602     1.35
2030.16    0.600     0.86
2030.26    0.597     0.36
2030.36    0.595   359.86
2030.46    0.592   359.35
2030.56    0.590   358.85
2030.66    0.587   358.33
2030.76    0.585   357.81
2030.86    0.582   357.29
2030.96    0.579   356.76
2031.06    0.576   356.23
2031.16    0.574   355.69
2031.26    0.571   355.14
2031.36    0.568   354.60
2031.46    0.565   354.04
2031.56    0.562   353.48
2031.66    0.559   352.91
2031.76    0.556   352.34
2031.86    0.553   351.76
2031.96    0.550   351.18
2032.06    0.547   350.59
2032.16    0.544   349.99
2032.26    0.541   349.39
2032.36    0.538   348.77
2032.46    0.535   348.15
2032.56    0.532   347.53
2032.66    0.529   346.90
2032.76    0.525   346.25
2032.86    0.522   345.61
2032.96    0.519   344.95
2033.06    0.516   344.28
2033.16    0.513   343.61
2033.26    0.509   342.93
2033.36    0.506   342.24
2033.46    0.503   341.54
2033.56    0.499   340.83
2033.66    0.496   340.11
2033.76    0.493   339.38
2033.86    0.490   338.64
2033.96    0.486   337.89
2034.06    0.483   337.14
2034.16    0.480   336.37
2034.26    0.476   335.59
2034.36    0.473   334.80
2034.46    0.470   334.00
2034.56    0.466   333.18
2034.66    0.463   332.36
2034.76    0.460   331.52
2034.86    0.457   330.68
2034.96    0.453   329.82
2035.06    0.450   328.94
2035.16    0.447   328.06
2035.26    0.444   327.16
2035.36    0.441   326.25
2035.46    0.437   325.33
2035.56    0.434   324.39
2035.66    0.431   323.44
2035.76    0.428   322.47
2035.86    0.425   321.49
2035.96    0.422   320.50
2036.06    0.419   319.49
2036.16    0.416   318.47
2036.26    0.413   317.43
2036.36    0.410   316.38
2036.46    0.407   315.31
2036.56    0.404   314.23
2036.66    0.401   313.13

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 16:08:52