Double Star Calculator - Orbit

Orbital Elements for YSC20

WDS:	YSC20	WDS ID/Discoverer
P:	13.291	Orbital period (years)
a:	0.1254	Semi-major axis (arcseconds)
i:	27.4	Inclination (degrees)
Ω:	45.9	Longitude of ascending node (degrees)
T:	2010.630	Epoch of periastron passage (year)
e:	0.418	Eccentricity
ω:	31.2	Longitude of periastron (degrees)
Start-Year:	2018.3545	Year
End-Year:	2031.6455	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YSC20
Position:	021640.57+063145.6	Epoch-2000 right ascension and declination
WDS-ID:	02167+0632	WDS designation
Discoverer Code:	YSC20	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	14070	HD catalog number
Hipparcos number:	10616	Hipparcos catalog number
V1:	9.5	Magnitude of the primary
V2:	11.9	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	Tok2024c	Reference

Double Star Orbit for YSC20

WDS 6th Orbit including measures of YSC20

-- 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 YSC20

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.125   198.08
--------------------------
2018.35    0.165   267.08
2018.45    0.164   268.35
2018.55    0.163   269.63
2018.65    0.162   270.94
2018.75    0.161   272.26
2018.85    0.159   273.60
2018.95    0.158   274.97
2019.05    0.157   276.36
2019.15    0.155   277.78
2019.25    0.154   279.22
2019.35    0.152   280.69
2019.45    0.150   282.19
2019.55    0.149   283.72
2019.65    0.147   285.29
2019.75    0.145   286.89
2019.85    0.144   288.54
2019.95    0.142   290.22
2020.05    0.140   291.95
2020.15    0.138   293.72
2020.25    0.136   295.54
2020.35    0.134   297.41
2020.45    0.133   299.34
2020.55    0.131   301.33
2020.65    0.129   303.37
2020.75    0.127   305.49
2020.85    0.124   307.67
2020.95    0.122   309.92
2021.05    0.120   312.25
2021.15    0.118   314.66
2021.25    0.116   317.16
2021.35    0.114   319.75
2021.45    0.112   322.44
2021.55    0.110   325.22
2021.65    0.108   328.11
2021.75    0.106   331.11
2021.85    0.104   334.23
2021.95    0.102   337.47
2022.05    0.100   340.84
2022.15    0.098   344.34
2022.25    0.096   347.98
2022.35    0.094   351.76
2022.45    0.093   355.69
2022.55    0.091   359.78
2022.65    0.089     4.02
2022.75    0.087     8.43
2022.85    0.086    13.02
2022.95    0.084    17.78
2023.05    0.083    22.72
2023.15    0.081    27.86
2023.25    0.080    33.19
2023.35    0.078    38.73
2023.45    0.077    44.48
2023.55    0.075    50.44
2023.65    0.074    56.63
2023.75    0.073    63.04
2023.85    0.072    69.66
2023.95    0.071    76.47
2024.05    0.070    83.43
2024.15    0.069    90.52
2024.25    0.069    97.65
2024.35    0.070   104.78
2024.45    0.070   111.83
2024.55    0.071   118.71
2024.65    0.072   125.38
2024.75    0.074   131.77
2024.85    0.076   137.85
2024.95    0.079   143.59
2025.05    0.081   148.99
2025.15    0.084   154.05
2025.25    0.087   158.78
2025.35    0.090   163.20
2025.45    0.093   167.33
2025.55    0.096   171.19
2025.65    0.099   174.80
2025.75    0.102   178.18
2025.85    0.106   181.36
2025.95    0.109   184.35
2026.05    0.112   187.17
2026.15    0.115   189.84
2026.25    0.118   192.37
2026.35    0.121   194.78
2026.45    0.124   197.07
2026.55    0.127   199.26
2026.65    0.130   201.35
2026.75    0.132   203.36
2026.85    0.135   205.28
2026.95    0.137   207.14
2027.05    0.140   208.93
2027.15    0.142   210.66
2027.25    0.144   212.33
2027.35    0.147   213.96
2027.45    0.149   215.54
2027.55    0.151   217.07
2027.65    0.152   218.57
2027.75    0.154   220.03
2027.85    0.156   221.45
2027.95    0.158   222.85
2028.05    0.159   224.22
2028.15    0.161   225.56
2028.25    0.162   226.88
2028.35    0.163   228.18
2028.45    0.165   229.45
2028.55    0.166   230.71
2028.65    0.167   231.95
2028.75    0.168   233.18
2028.85    0.169   234.39
2028.95    0.170   235.59
2029.05    0.170   236.78
2029.15    0.171   237.96
2029.25    0.172   239.13
2029.35    0.172   240.30
2029.45    0.173   241.45
2029.55    0.173   242.60
2029.65    0.173   243.75
2029.75    0.173   244.89
2029.85    0.174   246.03
2029.95    0.174   247.17
2030.05    0.174   248.31
2030.15    0.174   249.45
2030.25    0.174   250.59
2030.35    0.173   251.73
2030.45    0.173   252.88
2030.55    0.173   254.03
2030.65    0.172   255.18
2030.75    0.172   256.34
2030.85    0.171   257.51
2030.95    0.171   258.68
2031.05    0.170   259.86
2031.15    0.169   261.06
2031.25    0.169   262.26
2031.35    0.168   263.47
2031.45    0.167   264.70
2031.55    0.166   265.94

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 14:58:43