Double Star Calculator - Orbit

Orbital Elements for HDS272AB
WDS: HDS272AB WDS ID/Discoverer
P: 138.540 Orbital period (years)
a: 0.97 Semi-major axis (arcseconds)
i: 111.1 Inclination (degrees)
Ω: 89.6 Longitude of ascending node (degrees)
T: 2074.750 Epoch of periastron passage (year)
e: 0.513 Eccentricity
ω: 274.2 Longitude of periastron (degrees)
Start-Year: 1955.73 Year
End-Year: 2094.27 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for HDS272AB
Position: 020211.25-240223.8 Epoch-2000 right ascension and declination
WDS-ID: 02022-2402 WDS designation
Discoverer Code: HDS272AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 12515 HD catalog number
Hipparcos number: 9497 Hipparcos catalog number
V1: 8.01 Magnitude of the primary
V2: 11.70 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Hrt2011d Reference

Double Star Orbit for HDS272AB



WDS 6th Orbit including measures of HDS272AB

-- 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 HDS272AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.740   306.44
--------------------------
1955.73    0.805    79.76
1956.73    0.811    78.60
1957.73    0.815    77.46
1958.73    0.818    76.33
1959.73    0.819    75.20
1960.73    0.819    74.07
1961.73    0.817    72.94
1962.73    0.815    71.81
1963.73    0.811    70.67
1964.73    0.807    69.51
1965.73    0.801    68.34
1966.73    0.795    67.16
1967.73    0.788    65.95
1968.73    0.781    64.73
1969.73    0.772    63.47
1970.73    0.764    62.19
1971.73    0.755    60.88
1972.73    0.745    59.54
1973.73    0.735    58.16
1974.73    0.725    56.74
1975.73    0.715    55.28
1976.73    0.704    53.78
1977.73    0.693    52.23
1978.73    0.682    50.63
1979.73    0.671    48.99
1980.73    0.661    47.28
1981.73    0.650    45.52
1982.73    0.639    43.70
1983.73    0.629    41.82
1984.73    0.618    39.88
1985.73    0.608    37.87
1986.73    0.599    35.80
1987.73    0.590    33.66
1988.73    0.581    31.45
1989.73    0.573    29.18
1990.73    0.565    26.84
1991.73    0.558    24.44
1992.73    0.551    21.99
1993.73    0.545    19.47
1994.73    0.540    16.91
1995.73    0.536    14.30
1996.73    0.532    11.65
1997.73    0.530     8.97
1998.73    0.528     6.26
1999.73    0.527     3.54
2000.73    0.527     0.82
2001.73    0.527   358.10
2002.73    0.529   355.39
2003.73    0.531   352.70
2004.73    0.535   350.04
2005.73    0.539   347.42
2006.73    0.544   344.84
2007.73    0.549   342.31
2008.73    0.556   339.84
2009.73    0.563   337.42
2010.73    0.571   335.07
2011.73    0.579   332.78
2012.73    0.588   330.56
2013.73    0.597   328.41
2014.73    0.607   326.32
2015.73    0.617   324.31
2016.73    0.628   322.36
2017.73    0.639   320.47
2018.73    0.650   318.65
2019.73    0.661   316.89
2020.73    0.673   315.19
2021.73    0.684   313.55
2022.73    0.696   311.97
2023.73    0.708   310.43
2024.73    0.719   308.95
2025.73    0.731   307.51
2026.73    0.743   306.12
2027.73    0.754   304.77
2028.73    0.766   303.46
2029.73    0.777   302.19
2030.73    0.788   300.96
2031.73    0.798   299.76
2032.73    0.809   298.59
2033.73    0.819   297.45
2034.73    0.828   296.33
2035.73    0.837   295.24
2036.73    0.846   294.18
2037.73    0.854   293.13
2038.73    0.861   292.10
2039.73    0.868   291.09
2040.73    0.874   290.10
2041.73    0.880   289.12
2042.73    0.884   288.14
2043.73    0.888   287.18
2044.73    0.891   286.23
2045.73    0.893   285.28
2046.73    0.894   284.33
2047.73    0.893   283.38
2048.73    0.892   282.44
2049.73    0.889   281.48
2050.73    0.885   280.52
2051.73    0.879   279.55
2052.73    0.872   278.56
2053.73    0.863   277.56
2054.73    0.852   276.53
2055.73    0.839   275.48
2056.73    0.824   274.38
2057.73    0.807   273.25
2058.73    0.787   272.06
2059.73    0.765   270.81
2060.73    0.740   269.48
2061.73    0.712   268.04
2062.73    0.681   266.49
2063.73    0.646   264.77
2064.73    0.608   262.85
2065.73    0.566   260.66
2066.73    0.521   258.11
2067.73    0.472   255.04
2068.73    0.420   251.22
2069.73    0.365   246.29
2070.73    0.309   239.57
2071.73    0.254   229.92
2072.73    0.207   215.43
2073.73    0.176   194.21
2074.73    0.173   168.58
2075.73    0.199   146.13
2076.73    0.244   130.45
2077.73    0.298   120.02
2078.73    0.353   112.83
2079.73    0.407   107.58
2080.73    0.459   103.54
2081.73    0.507   100.30
2082.73    0.551    97.59
2083.73    0.591    95.27
2084.73    0.626    93.23
2085.73    0.658    91.40
2086.73    0.687    89.73
2087.73    0.711    88.19
2088.73    0.733    86.74
2089.73    0.752    85.37
2090.73    0.768    84.06
2091.73    0.781    82.80
2092.73    0.792    81.58
2093.73    0.801    80.39



 

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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 14:56:13


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