Double Star Calculator - Orbit

Orbital Elements for HDO195CD
WDS: HDO195CD WDS ID/Discoverer
P: 101.000 Orbital period (years)
a: 0.536 Semi-major axis (arcseconds)
i: 30.8 Inclination (degrees)
Ω: 115.3 Longitude of ascending node (degrees)
T: 2004.270 Epoch of periastron passage (year)
e: 0.246 Eccentricity
ω: 10.0 Longitude of periastron (degrees)
Start-Year: 1974.5 Year
End-Year: 2075.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDO195CD
Position: 062948.08-501412.7 Epoch-2000 right ascension and declination
WDS-ID: 06298-5014 WDS designation
Discoverer Code: HDO195CD Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 30953 Hipparcos catalog number
V1: 7.98 Magnitude of the primary
V2: 8.73 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2020 Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Doc2021a Reference

Double Star Orbit for HDO195CD



WDS 6th Orbit including measures of HDO195CD

-- 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 HDO195CD
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.484   236.44
--------------------------
1974.50    0.537   351.04
1975.50    0.528   354.05
1976.50    0.518   357.17
1977.50    0.509     0.40
1978.50    0.499     3.75
1979.50    0.490     7.24
1980.50    0.481    10.85
1981.50    0.473    14.60
1982.50    0.465    18.48
1983.50    0.457    22.49
1984.50    0.450    26.65
1985.50    0.443    30.93
1986.50    0.437    35.34
1987.50    0.431    39.86
1988.50    0.427    44.50
1989.50    0.423    49.23
1990.50    0.419    54.04
1991.50    0.416    58.92
1992.50    0.414    63.87
1993.50    0.413    68.85
1994.50    0.412    73.88
1995.50    0.411    78.92
1996.50    0.410    83.98
1997.50    0.410    89.06
1998.50    0.409    94.15
1999.50    0.409    99.25
2000.50    0.408   104.37
2001.50    0.407   109.50
2002.50    0.406   114.67
2003.50    0.404   119.88
2004.50    0.402   125.12
2005.50    0.400   130.42
2006.50    0.398   135.78
2007.50    0.396   141.20
2008.50    0.393   146.68
2009.50    0.392   152.21
2010.50    0.390   157.79
2011.50    0.390   163.40
2012.50    0.389   169.02
2013.50    0.390   174.63
2014.50    0.392   180.21
2015.50    0.395   185.71
2016.50    0.399   191.13
2017.50    0.404   196.42
2018.50    0.410   201.58
2019.50    0.417   206.57
2020.50    0.425   211.39
2021.50    0.433   216.03
2022.50    0.442   220.48
2023.50    0.452   224.74
2024.50    0.463   228.82
2025.50    0.473   232.71
2026.50    0.484   236.44
2027.50    0.495   239.99
2028.50    0.506   243.39
2029.50    0.518   246.64
2030.50    0.529   249.76
2031.50    0.540   252.75
2032.50    0.550   255.62
2033.50    0.561   258.38
2034.50    0.571   261.05
2035.50    0.580   263.62
2036.50    0.590   266.11
2037.50    0.598   268.53
2038.50    0.607   270.88
2039.50    0.615   273.16
2040.50    0.622   275.39
2041.50    0.629   277.57
2042.50    0.635   279.71
2043.50    0.641   281.80
2044.50    0.646   283.86
2045.50    0.651   285.89
2046.50    0.655   287.89
2047.50    0.658   289.87
2048.50    0.661   291.83
2049.50    0.663   293.77
2050.50    0.665   295.70
2051.50    0.666   297.63
2052.50    0.666   299.55
2053.50    0.666   301.47
2054.50    0.666   303.39
2055.50    0.664   305.32
2056.50    0.662   307.26
2057.50    0.660   309.21
2058.50    0.657   311.18
2059.50    0.653   313.16
2060.50    0.649   315.17
2061.50    0.645   317.21
2062.50    0.640   319.28
2063.50    0.634   321.38
2064.50    0.628   323.52
2065.50    0.621   325.70
2066.50    0.614   327.94
2067.50    0.607   330.22
2068.50    0.599   332.57
2069.50    0.591   334.97
2070.50    0.583   337.45
2071.50    0.574   339.99
2072.50    0.565   342.62
2073.50    0.556   345.33
2074.50    0.547   348.14






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 15:47:19



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