Double Star Calculator - Orbit

Orbital Elements for YR30

WDS:	YR30	WDS ID/Discoverer
P:	18.472	Orbital period (years)
a:	0.087	Semi-major axis (arcseconds)
i:	43.7	Inclination (degrees)
Ω:	169.0	Longitude of ascending node (degrees)
T:	2011.139	Epoch of periastron passage (year)
e:	0.771	Eccentricity
ω:	343.2	Longitude of periastron (degrees)
Start-Year:	2015.764	Year
End-Year:	2034.236	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YR30
Position:	213756.03+210228.3	Epoch-2000 right ascension and declination
WDS-ID:	21379+2102	WDS designation
Discoverer Code:	YR30	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	205897	HD catalog number
Hipparcos number:	106804	Hipparcos catalog number
V1:	8.9	Magnitude of the primary
V2:	9.0	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Cve2017b	Reference

Double Star Orbit for YR30

WDS 6th Orbit including measures of YR30

-- 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 YR30

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.101   359.83
--------------------------
2015.76    0.115   319.89
2015.86    0.116   320.40
2015.96    0.117   320.90
2016.06    0.119   321.39
2016.16    0.120   321.86
2016.26    0.122   322.33
2016.36    0.123   322.78
2016.46    0.124   323.23
2016.56    0.125   323.66
2016.66    0.127   324.09
2016.76    0.128   324.51
2016.86    0.129   324.92
2016.96    0.130   325.33
2017.06    0.131   325.72
2017.16    0.132   326.12
2017.26    0.133   326.50
2017.36    0.134   326.88
2017.46    0.135   327.26
2017.56    0.136   327.63
2017.66    0.137   327.99
2017.76    0.138   328.35
2017.86    0.139   328.70
2017.96    0.140   329.06
2018.06    0.140   329.40
2018.16    0.141   329.75
2018.26    0.142   330.08
2018.36    0.143   330.42
2018.46    0.143   330.75
2018.56    0.144   331.08
2018.66    0.145   331.41
2018.76    0.145   331.73
2018.86    0.146   332.05
2018.96    0.146   332.37
2019.06    0.147   332.69
2019.16    0.147   333.00
2019.26    0.148   333.32
2019.36    0.148   333.63
2019.46    0.149   333.93
2019.56    0.149   334.24
2019.66    0.149   334.55
2019.76    0.150   334.85
2019.86    0.150   335.15
2019.96    0.150   335.46
2020.06    0.150   335.76
2020.16    0.151   336.06
2020.26    0.151   336.36
2020.36    0.151   336.65
2020.46    0.151   336.95
2020.56    0.151   337.25
2020.66    0.151   337.55
2020.76    0.151   337.84
2020.86    0.151   338.14
2020.96    0.151   338.44
2021.06    0.151   338.73
2021.16    0.151   339.03
2021.26    0.151   339.33
2021.36    0.151   339.62
2021.46    0.151   339.92
2021.56    0.151   340.22
2021.66    0.151   340.52
2021.76    0.150   340.82
2021.86    0.150   341.12
2021.96    0.150   341.42
2022.06    0.149   341.73
2022.16    0.149   342.03
2022.26    0.149   342.34
2022.36    0.148   342.65
2022.46    0.148   342.96
2022.56    0.147   343.27
2022.66    0.147   343.58
2022.76    0.146   343.90
2022.86    0.146   344.21
2022.96    0.145   344.53
2023.06    0.145   344.86
2023.16    0.144   345.18
2023.26    0.143   345.51
2023.36    0.143   345.85
2023.46    0.142   346.18
2023.56    0.141   346.52
2023.66    0.140   346.86
2023.76    0.139   347.21
2023.86    0.139   347.56
2023.96    0.138   347.92
2024.06    0.137   348.28
2024.16    0.136   348.65
2024.26    0.135   349.02
2024.36    0.134   349.40
2024.46    0.133   349.78
2024.56    0.131   350.17
2024.66    0.130   350.57
2024.76    0.129   350.97
2024.86    0.128   351.38
2024.96    0.126   351.80
2025.06    0.125   352.23
2025.16    0.124   352.67
2025.26    0.122   353.12
2025.36    0.121   353.58
2025.46    0.119   354.05
2025.56    0.118   354.53
2025.66    0.116   355.02
2025.76    0.115   355.53
2025.86    0.113   356.06
2025.96    0.111   356.60
2026.06    0.109   357.16
2026.16    0.108   357.73
2026.26    0.106   358.33
2026.36    0.104   358.95
2026.46    0.102   359.59
2026.56    0.100     0.26
2026.66    0.098     0.95
2026.76    0.096     1.68
2026.86    0.093     2.44
2026.96    0.091     3.24
2027.06    0.089     4.08
2027.16    0.086     4.97
2027.26    0.084     5.91
2027.36    0.081     6.91
2027.46    0.079     7.98
2027.56    0.076     9.12
2027.66    0.073    10.35
2027.76    0.070    11.67
2027.86    0.067    13.12
2027.96    0.064    14.70
2028.06    0.061    16.44
2028.16    0.058    18.38
2028.26    0.054    20.55
2028.36    0.051    23.01
2028.46    0.047    25.84
2028.56    0.044    29.13
2028.66    0.040    33.03
2028.76    0.036    37.74
2028.86    0.032    43.55
2028.96    0.029    50.88
2029.06    0.025    60.34
2029.16    0.022    72.68
2029.26    0.020    88.56
2029.36    0.018   107.72
2029.46    0.018   128.35
2029.56    0.019   148.08
2029.66    0.020   165.86
2029.76    0.021   181.86
2029.86    0.022   196.51
2029.96    0.023   209.98
2030.06    0.024   222.19
2030.16    0.026   233.04
2030.26    0.028   242.51
2030.36    0.030   250.69
2030.46    0.032   257.71
2030.56    0.035   263.74
2030.66    0.037   268.95
2030.76    0.040   273.47
2030.86    0.043   277.42
2030.96    0.046   280.91
2031.06    0.048   284.00
2031.16    0.051   286.77
2031.26    0.054   289.26
2031.36    0.056   291.51
2031.46    0.059   293.57
2031.56    0.061   295.45
2031.66    0.064   297.18
2031.76    0.066   298.78
2031.86    0.069   300.27
2031.96    0.071   301.65
2032.06    0.074   302.95
2032.16    0.076   304.17
2032.26    0.078   305.31
2032.36    0.080   306.39
2032.46    0.083   307.42
2032.56    0.085   308.39
2032.66    0.087   309.31
2032.76    0.089   310.19
2032.86    0.091   311.04
2032.96    0.093   311.84
2033.06    0.095   312.61
2033.16    0.097   313.36
2033.26    0.098   314.07
2033.36    0.100   314.76
2033.46    0.102   315.42
2033.56    0.104   316.06
2033.66    0.106   316.68
2033.76    0.107   317.28
2033.86    0.109   317.86
2033.96    0.110   318.43
2034.06    0.112   318.98
2034.16    0.113   319.51

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 18:27:51