Double Star Calculator - Orbit

Orbital Elements for HWE28AB
WDS: HWE28AB WDS ID/Discoverer
P: 362.998 Orbital period (years)
a: 1.4886 Semi-major axis (arcseconds)
i: 74.536 Inclination (degrees)
Ω: 113.094 Longitude of ascending node (degrees)
T: 1958.521 Epoch of periastron passage (year)
e: 0.76736 Eccentricity
ω: 89.984 Longitude of periastron (degrees)
Start-Year: 1843.50075 Year
End-Year: 2206.49925 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HWE28AB
Position: 135332.75-353951.2 Epoch-2000 right ascension and declination
WDS-ID: 13535-3540 WDS designation
Discoverer Code: HWE28AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 120987 HD catalog number
Hipparcos number: 67819 Hipparcos catalog number
V1: 6.27 Magnitude of the primary
V2: 6.38 Magnitude of the secondary
Equinox: Equinox
Date: 2014 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for HWE28AB



WDS 6th Orbit including measures of HWE28AB

-- 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 HWE28AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.002   318.75
--------------------------
1843.50    0.855    67.10
1844.50    0.859    67.61
1845.50    0.862    68.12
1846.50    0.866    68.62
1847.50    0.870    69.12
1848.50    0.874    69.61
1849.50    0.877    70.10
1850.50    0.881    70.59
1851.50    0.885    71.07
1852.50    0.888    71.55
1853.50    0.892    72.02
1854.50    0.896    72.49
1855.50    0.899    72.96
1856.50    0.903    73.42
1857.50    0.907    73.88
1858.50    0.910    74.34
1859.50    0.914    74.79
1860.50    0.917    75.24
1861.50    0.921    75.68
1862.50    0.924    76.12
1863.50    0.928    76.56
1864.50    0.931    77.00
1865.50    0.935    77.43
1866.50    0.938    77.86
1867.50    0.941    78.28
1868.50    0.944    78.71
1869.50    0.948    79.12
1870.50    0.951    79.54
1871.50    0.954    79.96
1872.50    0.957    80.37
1873.50    0.960    80.78
1874.50    0.963    81.18
1875.50    0.966    81.59
1876.50    0.969    81.99
1877.50    0.972    82.39
1878.50    0.974    82.78
1879.50    0.977    83.18
1880.50    0.980    83.57
1881.50    0.982    83.96
1882.50    0.985    84.35
1883.50    0.987    84.74
1884.50    0.989    85.12
1885.50    0.991    85.50
1886.50    0.994    85.89
1887.50    0.996    86.27
1888.50    0.997    86.64
1889.50    0.999    87.02
1890.50    1.001    87.40
1891.50    1.002    87.77
1892.50    1.004    88.14
1893.50    1.005    88.52
1894.50    1.007    88.89
1895.50    1.008    89.26
1896.50    1.009    89.63
1897.50    1.009    90.00
1898.50    1.010    90.37
1899.50    1.011    90.73
1900.50    1.011    91.10
1901.50    1.011    91.47
1902.50    1.011    91.84
1903.50    1.011    92.20
1904.50    1.011    92.57
1905.50    1.010    92.94
1906.50    1.010    93.31
1907.50    1.009    93.68
1908.50    1.008    94.05
1909.50    1.006    94.42
1910.50    1.005    94.79
1911.50    1.003    95.16
1912.50    1.001    95.54
1913.50    0.998    95.91
1914.50    0.996    96.29
1915.50    0.993    96.67
1916.50    0.990    97.05
1917.50    0.986    97.44
1918.50    0.983    97.82
1919.50    0.978    98.22
1920.50    0.974    98.61
1921.50    0.969    99.01
1922.50    0.964    99.41
1923.50    0.958    99.82
1924.50    0.952   100.23
1925.50    0.945   100.65
1926.50    0.938   101.07
1927.50    0.930   101.50
1928.50    0.922   101.94
1929.50    0.913   102.38
1930.50    0.904   102.84
1931.50    0.894   103.30
1932.50    0.883   103.78
1933.50    0.872   104.27
1934.50    0.859   104.77
1935.50    0.846   105.29
1936.50    0.832   105.82
1937.50    0.817   106.37
1938.50    0.801   106.95
1939.50    0.783   107.55
1940.50    0.765   108.17
1941.50    0.745   108.83
1942.50    0.723   109.53
1943.50    0.700   110.27
1944.50    0.675   111.07
1945.50    0.648   111.92
1946.50    0.619   112.86
1947.50    0.588   113.89
1948.50    0.554   115.05
1949.50    0.516   116.36
1950.50    0.476   117.88
1951.50    0.433   119.70
1952.50    0.385   121.95
1953.50    0.334   124.86
1954.50    0.280   128.87
1955.50    0.223   134.86
1956.50    0.166   144.98
1957.50    0.116   164.69
1958.50    0.092   202.12
1959.50    0.115   240.25
1960.50    0.164   260.59
1961.50    0.221   270.99
1962.50    0.278   277.11
1963.50    0.332   281.17
1964.50    0.383   284.12
1965.50    0.431   286.39
1966.50    0.474   288.23
1967.50    0.515   289.76
1968.50    0.552   291.08
1969.50    0.586   292.24
1970.50    0.618   293.28
1971.50    0.647   294.22
1972.50    0.674   295.08
1973.50    0.699   295.88
1974.50    0.722   296.62
1975.50    0.744   297.32
1976.50    0.764   297.98
1977.50    0.783   298.61
1978.50    0.800   299.21
1979.50    0.816   299.78
1980.50    0.832   300.34
1981.50    0.846   300.87
1982.50    0.859   301.39
1983.50    0.871   301.89
1984.50    0.883   302.38
1985.50    0.894   302.85
1986.50    0.904   303.32
1987.50    0.913   303.77
1988.50    0.922   304.22
1989.50    0.930   304.66
1990.50    0.938   305.09
1991.50    0.945   305.51
1992.50    0.952   305.93
1993.50    0.958   306.34
1994.50    0.964   306.75
1995.50    0.969   307.15
1996.50    0.974   307.55
1997.50    0.979   307.94
1998.50    0.983   308.33
1999.50    0.987   308.72
2000.50    0.990   309.10
2001.50    0.993   309.49
2002.50    0.996   309.86
2003.50    0.999   310.24
2004.50    1.001   310.62
2005.50    1.003   310.99
2006.50    1.005   311.36
2007.50    1.007   311.74
2008.50    1.008   312.11
2009.50    1.009   312.48
2010.50    1.010   312.84
2011.50    1.011   313.21
2012.50    1.011   313.58
2013.50    1.012   313.95
2014.50    1.012   314.31
2015.50    1.012   314.68
2016.50    1.012   315.05
2017.50    1.011   315.41
2018.50    1.011   315.78
2019.50    1.010   316.15
2020.50    1.009   316.52
2021.50    1.008   316.89
2022.50    1.007   317.26
2023.50    1.006   317.63
2024.50    1.005   318.00
2025.50    1.003   318.37
2026.50    1.002   318.75
2027.50    1.000   319.12
2028.50    0.998   319.50
2029.50    0.996   319.88
2030.50    0.994   320.25
2031.50    0.992   320.64
2032.50    0.990   321.02
2033.50    0.988   321.40
2034.50    0.986   321.79
2035.50    0.983   322.18
2036.50    0.981   322.57
2037.50    0.978   322.96
2038.50    0.975   323.35
2039.50    0.973   323.75
2040.50    0.970   324.15
2041.50    0.967   324.55
2042.50    0.964   324.95
2043.50    0.961   325.35
2044.50    0.958   325.76
2045.50    0.955   326.17
2046.50    0.952   326.59
2047.50    0.949   327.00
2048.50    0.945   327.42
2049.50    0.942   327.84
2050.50    0.939   328.27
2051.50    0.936   328.70
2052.50    0.932   329.13
2053.50    0.929   329.56
2054.50    0.925   330.00
2055.50    0.922   330.44
2056.50    0.918   330.88
2057.50    0.915   331.33
2058.50    0.911   331.78
2059.50    0.908   332.23
2060.50    0.904   332.69
2061.50    0.900   333.15
2062.50    0.897   333.62
2063.50    0.893   334.09
2064.50    0.889   334.56
2065.50    0.886   335.04
2066.50    0.882   335.52
2067.50    0.878   336.01
2068.50    0.875   336.49
2069.50    0.871   336.99
2070.50    0.867   337.49
2071.50    0.863   337.99
2072.50    0.860   338.49
2073.50    0.856   339.00
2074.50    0.852   339.52
2075.50    0.849   340.04
2076.50    0.845   340.56
2077.50    0.841   341.09
2078.50    0.838   341.62
2079.50    0.834   342.16
2080.50    0.830   342.70
2081.50    0.827   343.25
2082.50    0.823   343.80
2083.50    0.820   344.36
2084.50    0.816   344.92
2085.50    0.813   345.49
2086.50    0.809   346.06
2087.50    0.806   346.63
2088.50    0.802   347.22
2089.50    0.799   347.80
2090.50    0.796   348.39
2091.50    0.792   348.99
2092.50    0.789   349.59
2093.50    0.786   350.20
2094.50    0.782   350.81
2095.50    0.779   351.42
2096.50    0.776   352.04
2097.50    0.773   352.67
2098.50    0.770   353.30
2099.50    0.767   353.94
2100.50    0.764   354.58
2101.50    0.761   355.22
2102.50    0.758   355.88
2103.50    0.756   356.53
2104.50    0.753   357.19
2105.50    0.750   357.86
2106.50    0.748   358.53
2107.50    0.745   359.20
2108.50    0.743   359.88
2109.50    0.740     0.56
2110.50    0.738     1.25
2111.50    0.735     1.94
2112.50    0.733     2.64
2113.50    0.731     3.34
2114.50    0.729     4.05
2115.50    0.727     4.76
2116.50    0.725     5.47
2117.50    0.723     6.19
2118.50    0.721     6.91
2119.50    0.719     7.63
2120.50    0.718     8.36
2121.50    0.716     9.09
2122.50    0.715     9.82
2123.50    0.713    10.56
2124.50    0.712    11.30
2125.50    0.711    12.04
2126.50    0.709    12.79
2127.50    0.708    13.54
2128.50    0.707    14.29
2129.50    0.706    15.04
2130.50    0.705    15.79
2131.50    0.705    16.55
2132.50    0.704    17.31
2133.50    0.703    18.06
2134.50    0.703    18.82
2135.50    0.702    19.59
2136.50    0.702    20.35
2137.50    0.702    21.11
2138.50    0.702    21.87
2139.50    0.701    22.64
2140.50    0.701    23.40
2141.50    0.702    24.16
2142.50    0.702    24.93
2143.50    0.702    25.69
2144.50    0.702    26.45
2145.50    0.703    27.21
2146.50    0.703    27.97
2147.50    0.704    28.73
2148.50    0.705    29.49
2149.50    0.705    30.25
2150.50    0.706    31.00
2151.50    0.707    31.75
2152.50    0.708    32.50
2153.50    0.709    33.25
2154.50    0.710    34.00
2155.50    0.712    34.74
2156.50    0.713    35.48
2157.50    0.714    36.22
2158.50    0.716    36.96
2159.50    0.717    37.69
2160.50    0.719    38.42
2161.50    0.721    39.14
2162.50    0.723    39.86
2163.50    0.724    40.58
2164.50    0.726    41.29
2165.50    0.728    42.00
2166.50    0.730    42.71
2167.50    0.733    43.41
2168.50    0.735    44.11
2169.50    0.737    44.80
2170.50    0.740    45.49
2171.50    0.742    46.18
2172.50    0.744    46.86
2173.50    0.747    47.53
2174.50    0.750    48.20
2175.50    0.752    48.87
2176.50    0.755    49.53
2177.50    0.758    50.19
2178.50    0.761    50.84
2179.50    0.763    51.49
2180.50    0.766    52.13
2181.50    0.769    52.77
2182.50    0.772    53.40
2183.50    0.775    54.03
2184.50    0.779    54.65
2185.50    0.782    55.27
2186.50    0.785    55.88
2187.50    0.788    56.49
2188.50    0.791    57.09
2189.50    0.795    57.69
2190.50    0.798    58.28
2191.50    0.801    58.87
2192.50    0.805    59.45
2193.50    0.808    60.03
2194.50    0.812    60.60
2195.50    0.815    61.17
2196.50    0.819    61.73
2197.50    0.822    62.29
2198.50    0.826    62.84
2199.50    0.830    63.39
2200.50    0.833    63.93
2201.50    0.837    64.47
2202.50    0.840    65.01
2203.50    0.844    65.54
2204.50    0.848    66.06
2205.50    0.851    66.58






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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.


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Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 16:59:51



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