Double Star Calculator - Orbit

Orbital Elements for YSC165

WDS:	YSC165	WDS ID/Discoverer
P:	11.798	Orbital period (years)
a:	0.3067	Semi-major axis (arcseconds)
i:	38.21	Inclination (degrees)
Ω:	151.8	Longitude of ascending node (degrees)
T:	2015.026	Epoch of periastron passage (year)
e:	0.4838	Eccentricity
ω:	267.2	Longitude of periastron (degrees)
Start-Year:	2019.101	Year
End-Year:	2030.899	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YSC165
Position:	220149.05+162802.7	Epoch-2000 right ascension and declination
WDS-ID:	22018+1628	WDS designation
Discoverer Code:	YSC165	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	108752	Hipparcos catalog number
V1:	11.3	Magnitude of the primary
V2:	11.6	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:	MnA2019	Reference

Double Star Orbit for YSC165

WDS 6th Orbit including measures of YSC165

-- 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 YSC165

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.143    20.92
--------------------------
2019.10    0.352   209.93
2019.20    0.353   211.53
2019.30    0.354   213.11
2019.40    0.354   214.68
2019.50    0.355   216.25
2019.60    0.356   217.81
2019.70    0.356   219.37
2019.80    0.357   220.92
2019.90    0.357   222.47
2020.00    0.358   224.02
2020.10    0.358   225.56
2020.20    0.358   227.10
2020.30    0.358   228.64
2020.40    0.358   230.18
2020.50    0.358   231.71
2020.60    0.358   233.25
2020.70    0.358   234.79
2020.80    0.358   236.33
2020.90    0.358   237.87
2021.00    0.358   239.41
2021.10    0.357   240.95
2021.20    0.357   242.50
2021.30    0.357   244.05
2021.40    0.356   245.60
2021.50    0.356   247.16
2021.60    0.355   248.72
2021.70    0.355   250.29
2021.80    0.354   251.87
2021.90    0.353   253.44
2022.00    0.352   255.03
2022.10    0.352   256.62
2022.20    0.351   258.22
2022.30    0.350   259.83
2022.40    0.349   261.45
2022.50    0.348   263.08
2022.60    0.346   264.72
2022.70    0.345   266.37
2022.80    0.344   268.03
2022.90    0.343   269.71
2023.00    0.341   271.39
2023.10    0.339   273.10
2023.20    0.338   274.82
2023.30    0.336   276.56
2023.40    0.334   278.32
2023.50    0.332   280.10
2023.60    0.330   281.90
2023.70    0.328   283.72
2023.80    0.325   285.58
2023.90    0.322   287.46
2024.00    0.320   289.37
2024.10    0.317   291.32
2024.20    0.313   293.31
2024.30    0.310   295.34
2024.40    0.306   297.42
2024.50    0.303   299.55
2024.60    0.298   301.73
2024.70    0.294   303.98
2024.80    0.289   306.31
2024.90    0.284   308.71
2025.00    0.279   311.20
2025.10    0.273   313.80
2025.20    0.266   316.52
2025.30    0.260   319.37
2025.40    0.252   322.39
2025.50    0.245   325.58
2025.60    0.236   329.00
2025.70    0.227   332.67
2025.80    0.218   336.65
2025.90    0.208   341.00
2026.00    0.197   345.81
2026.10    0.186   351.17
2026.20    0.175   357.21
2026.30    0.164     4.08
2026.40    0.153    11.96
2026.50    0.143    21.01
2026.60    0.134    31.34
2026.70    0.128    42.88
2026.80    0.125    55.30
2026.90    0.125    68.02
2027.00    0.129    80.32
2027.10    0.136    91.66
2027.20    0.145   101.75
2027.30    0.155   110.55
2027.40    0.166   118.20
2027.50    0.178   124.86
2027.60    0.190   130.71
2027.70    0.201   135.88
2027.80    0.212   140.52
2027.90    0.222   144.71
2028.00    0.232   148.54
2028.10    0.241   152.06
2028.20    0.250   155.33
2028.30    0.258   158.39
2028.40    0.266   161.27
2028.50    0.273   163.99
2028.60    0.280   166.57
2028.70    0.286   169.04
2028.80    0.292   171.41
2028.90    0.297   173.69
2029.00    0.302   175.89
2029.10    0.307   178.02
2029.20    0.311   180.09
2029.30    0.315   182.10
2029.40    0.319   184.06
2029.50    0.323   185.98
2029.60    0.326   187.86
2029.70    0.329   189.70
2029.80    0.332   191.51
2029.90    0.334   193.29
2030.00    0.337   195.04
2030.10    0.339   196.77
2030.20    0.341   198.48
2030.30    0.343   200.17
2030.40    0.345   201.84
2030.50    0.346   203.49
2030.60    0.348   205.13
2030.70    0.349   206.75
2030.80    0.350   208.36

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 18:35:20