Double Star Calculator - Orbit

Orbital Elements for YSC39
WDS: YSC39 WDS ID/Discoverer
P: 178.900 Orbital period (years)
a: 1.083 Semi-major axis (arcseconds)
i: 129.5 Inclination (degrees)
Ω: 50.95 Longitude of ascending node (degrees)
T: 2000.070 Epoch of periastron passage (year)
e: 0.274 Eccentricity
ω: 331.4 Longitude of periastron (degrees)
Start-Year: 1935.55 Year
End-Year: 2114.45 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for YSC39
Position: 103200.66+083038.2 Epoch-2000 right ascension and declination
WDS-ID: 10320+0831 WDS designation
Discoverer Code: YSC39 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 51571 Hipparcos catalog number
V1: 10.78 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: Equinox
Date: 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: Hor2021b Reference

Double Star Orbit for YSC39



WDS 6th Orbit including measures of YSC39

-- 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 YSC39
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.754     9.06
--------------------------
1935.55    1.310   229.57
1936.55    1.303   228.72
1937.55    1.296   227.86
1938.55    1.288   227.00
1939.55    1.280   226.12
1940.55    1.270   225.24
1941.55    1.261   224.33
1942.55    1.250   223.42
1943.55    1.239   222.49
1944.55    1.228   221.54
1945.55    1.215   220.57
1946.55    1.203   219.58
1947.55    1.189   218.57
1948.55    1.175   217.54
1949.55    1.160   216.48
1950.55    1.145   215.39
1951.55    1.129   214.28
1952.55    1.112   213.12
1953.55    1.095   211.94
1954.55    1.077   210.71
1955.55    1.059   209.45
1956.55    1.040   208.14
1957.55    1.021   206.78
1958.55    1.001   205.36
1959.55    0.980   203.89
1960.55    0.960   202.36
1961.55    0.939   200.75
1962.55    0.917   199.08
1963.55    0.895   197.32
1964.55    0.874   195.47
1965.55    0.851   193.53
1966.55    0.829   191.49
1967.55    0.807   189.33
1968.55    0.785   187.05
1969.55    0.763   184.64
1970.55    0.741   182.08
1971.55    0.720   179.38
1972.55    0.699   176.51
1973.55    0.679   173.46
1974.55    0.660   170.24
1975.55    0.642   166.83
1976.55    0.625   163.23
1977.55    0.609   159.44
1978.55    0.596   155.46
1979.55    0.584   151.30
1980.55    0.573   146.98
1981.55    0.566   142.53
1982.55    0.560   137.97
1983.55    0.556   133.33
1984.55    0.555   128.65
1985.55    0.557   123.98
1986.55    0.560   119.35
1987.55    0.566   114.79
1988.55    0.574   110.35
1989.55    0.583   106.03
1990.55    0.594   101.86
1991.55    0.607    97.86
1992.55    0.620    94.02
1993.55    0.634    90.35
1994.55    0.649    86.85
1995.55    0.664    83.50
1996.55    0.679    80.30
1997.55    0.695    77.24
1998.55    0.709    74.31
1999.55    0.724    71.50
2000.55    0.737    68.79
2001.55    0.750    66.18
2002.55    0.762    63.65
2003.55    0.773    61.20
2004.55    0.782    58.81
2005.55    0.791    56.48
2006.55    0.799    54.19
2007.55    0.805    51.95
2008.55    0.810    49.74
2009.55    0.814    47.55
2010.55    0.817    45.38
2011.55    0.818    43.22
2012.55    0.819    41.06
2013.55    0.819    38.91
2014.55    0.817    36.75
2015.55    0.815    34.58
2016.55    0.812    32.40
2017.55    0.808    30.20
2018.55    0.803    27.97
2019.55    0.798    25.72
2020.55    0.792    23.43
2021.55    0.786    21.12
2022.55    0.780    18.76
2023.55    0.773    16.37
2024.55    0.767    13.93
2025.55    0.760    11.46
2026.55    0.754     8.94
2027.55    0.748     6.37
2028.55    0.742     3.77
2029.55    0.736     1.12
2030.55    0.731   358.44
2031.55    0.726   355.72
2032.55    0.722   352.96
2033.55    0.719   350.18
2034.55    0.716   347.37
2035.55    0.714   344.55
2036.55    0.713   341.71
2037.55    0.713   338.87
2038.55    0.714   336.04
2039.55    0.715   333.21
2040.55    0.718   330.39
2041.55    0.721   327.60
2042.55    0.726   324.84
2043.55    0.731   322.12
2044.55    0.737   319.44
2045.55    0.744   316.81
2046.55    0.752   314.22
2047.55    0.760   311.69
2048.55    0.769   309.23
2049.55    0.779   306.82
2050.55    0.790   304.47
2051.55    0.801   302.19
2052.55    0.813   299.97
2053.55    0.825   297.82
2054.55    0.838   295.73
2055.55    0.851   293.71
2056.55    0.864   291.74
2057.55    0.878   289.84
2058.55    0.892   287.99
2059.55    0.906   286.21
2060.55    0.921   284.48
2061.55    0.935   282.80
2062.55    0.950   281.17
2063.55    0.964   279.60
2064.55    0.979   278.07
2065.55    0.994   276.58
2066.55    1.008   275.14
2067.55    1.023   273.74
2068.55    1.037   272.38
2069.55    1.052   271.06
2070.55    1.066   269.77
2071.55    1.080   268.52
2072.55    1.094   267.30
2073.55    1.108   266.10
2074.55    1.121   264.94
2075.55    1.134   263.81
2076.55    1.147   262.70
2077.55    1.160   261.61
2078.55    1.172   260.55
2079.55    1.184   259.51
2080.55    1.195   258.49
2081.55    1.207   257.49
2082.55    1.218   256.50
2083.55    1.228   255.54
2084.55    1.238   254.59
2085.55    1.248   253.66
2086.55    1.257   252.74
2087.55    1.266   251.83
2088.55    1.274   250.93
2089.55    1.282   250.05
2090.55    1.290   249.18
2091.55    1.297   248.31
2092.55    1.303   247.46
2093.55    1.309   246.61
2094.55    1.315   245.78
2095.55    1.320   244.94
2096.55    1.325   244.12
2097.55    1.328   243.30
2098.55    1.332   242.48
2099.55    1.335   241.67
2100.55    1.337   240.86
2101.55    1.339   240.06
2102.55    1.340   239.25
2103.55    1.341   238.45
2104.55    1.341   237.64
2105.55    1.340   236.84
2106.55    1.339   236.04
2107.55    1.338   235.23
2108.55    1.335   234.42
2109.55    1.333   233.61
2110.55    1.329   232.80
2111.55    1.325   231.98
2112.55    1.320   231.15
2113.55    1.315   230.32






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 16:28:35



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