Double Star Calculator - Orbit

Orbital Elements for HU91BC
WDS: HU91BC WDS ID/Discoverer
P: 240.000 Orbital period (years)
a: 0.143 Semi-major axis (arcseconds)
i: 99.0 Inclination (degrees)
Ω: 208.0 Longitude of ascending node (degrees)
T: 1985.000 Epoch of periastron passage (year)
e: 0.3 Eccentricity
ω: 110.0 Longitude of periastron (degrees)
Start-Year: 1905.0 Year
End-Year: 2145.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU91BC
Position: 224304.32+471007.5 Epoch-2000 right ascension and declination
WDS-ID: 22431+4710 WDS designation
Discoverer Code: HU91BC Discover designation and components
ADS number: 16214 Aitken Double Star catalog
HD number: 215242 HD catalog number
Hipparcos number: 112170 Hipparcos catalog number
V1: 8.0 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok1997 Reference

Double Star Orbit for HU91BC



WDS 6th Orbit including measures of HU91BC

-- 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 HU91BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.121    23.49
--------------------------
1905.00    0.143   214.10
1906.00    0.144   213.87
1907.00    0.145   213.65
1908.00    0.146   213.44
1909.00    0.147   213.22
1910.00    0.147   213.01
1911.00    0.148   212.80
1912.00    0.149   212.60
1913.00    0.150   212.39
1914.00    0.150   212.19
1915.00    0.151   211.98
1916.00    0.151   211.78
1917.00    0.151   211.58
1918.00    0.152   211.38
1919.00    0.152   211.18
1920.00    0.152   210.99
1921.00    0.152   210.79
1922.00    0.152   210.59
1923.00    0.152   210.39
1924.00    0.152   210.19
1925.00    0.152   209.99
1926.00    0.151   209.79
1927.00    0.151   209.59
1928.00    0.150   209.39
1929.00    0.150   209.19
1930.00    0.149   208.98
1931.00    0.148   208.78
1932.00    0.148   208.57
1933.00    0.147   208.36
1934.00    0.146   208.14
1935.00    0.145   207.93
1936.00    0.143   207.70
1937.00    0.142   207.48
1938.00    0.141   207.25
1939.00    0.139   207.02
1940.00    0.138   206.78
1941.00    0.136   206.54
1942.00    0.134   206.28
1943.00    0.132   206.03
1944.00    0.130   205.76
1945.00    0.128   205.49
1946.00    0.126   205.21
1947.00    0.124   204.91
1948.00    0.121   204.61
1949.00    0.119   204.29
1950.00    0.116   203.96
1951.00    0.114   203.61
1952.00    0.111   203.25
1953.00    0.108   202.87
1954.00    0.105   202.46
1955.00    0.102   202.03
1956.00    0.098   201.57
1957.00    0.095   201.08
1958.00    0.091   200.55
1959.00    0.088   199.98
1960.00    0.084   199.36
1961.00    0.080   198.69
1962.00    0.076   197.94
1963.00    0.072   197.11
1964.00    0.068   196.19
1965.00    0.064   195.15
1966.00    0.060   193.96
1967.00    0.056   192.60
1968.00    0.051   191.01
1969.00    0.047   189.12
1970.00    0.043   186.85
1971.00    0.038   184.06
1972.00    0.034   180.57
1973.00    0.030   176.08
1974.00    0.026   170.16
1975.00    0.022   162.18
1976.00    0.019   151.32
1977.00    0.017   136.93
1978.00    0.016   119.57
1979.00    0.016   101.80
1980.00    0.018    86.52
1981.00    0.021    74.80
1982.00    0.025    66.17
1983.00    0.029    59.79
1984.00    0.033    54.98
1985.00    0.037    51.26
1986.00    0.042    48.30
1987.00    0.046    45.90
1988.00    0.050    43.92
1989.00    0.054    42.24
1990.00    0.059    40.81
1991.00    0.063    39.56
1992.00    0.067    38.47
1993.00    0.071    37.50
1994.00    0.074    36.63
1995.00    0.078    35.84
1996.00    0.082    35.12
1997.00    0.085    34.46
1998.00    0.088    33.85
1999.00    0.091    33.28
2000.00    0.094    32.75
2001.00    0.097    32.25
2002.00    0.100    31.78
2003.00    0.102    31.33
2004.00    0.105    30.90
2005.00    0.107    30.49
2006.00    0.109    30.10
2007.00    0.111    29.72
2008.00    0.113    29.35
2009.00    0.114    29.00
2010.00    0.116    28.65
2011.00    0.117    28.31
2012.00    0.118    27.98
2013.00    0.119    27.66
2014.00    0.120    27.34
2015.00    0.121    27.02
2016.00    0.121    26.71
2017.00    0.122    26.40
2018.00    0.122    26.09
2019.00    0.123    25.79
2020.00    0.123    25.48
2021.00    0.123    25.18
2022.00    0.123    24.87
2023.00    0.122    24.57
2024.00    0.122    24.26
2025.00    0.122    23.95
2026.00    0.121    23.64
2027.00    0.120    23.33
2028.00    0.120    23.01
2029.00    0.119    22.69
2030.00    0.118    22.36
2031.00    0.117    22.03
2032.00    0.116    21.70
2033.00    0.115    21.35
2034.00    0.114    21.00
2035.00    0.112    20.65
2036.00    0.111    20.28
2037.00    0.110    19.90
2038.00    0.108    19.52
2039.00    0.107    19.12
2040.00    0.105    18.72
2041.00    0.103    18.29
2042.00    0.102    17.86
2043.00    0.100    17.41
2044.00    0.098    16.94
2045.00    0.096    16.46
2046.00    0.094    15.96
2047.00    0.092    15.43
2048.00    0.090    14.88
2049.00    0.088    14.31
2050.00    0.086    13.71
2051.00    0.084    13.09
2052.00    0.082    12.43
2053.00    0.080    11.73
2054.00    0.078    11.00
2055.00    0.076    10.22
2056.00    0.073     9.40
2057.00    0.071     8.52
2058.00    0.069     7.59
2059.00    0.067     6.60
2060.00    0.064     5.53
2061.00    0.062     4.39
2062.00    0.060     3.17
2063.00    0.058     1.84
2064.00    0.055     0.41
2065.00    0.053   358.86
2066.00    0.051   357.17
2067.00    0.049   355.34
2068.00    0.047   353.33
2069.00    0.045   351.13
2070.00    0.043   348.71
2071.00    0.041   346.06
2072.00    0.039   343.14
2073.00    0.037   339.93
2074.00    0.035   336.39
2075.00    0.034   332.52
2076.00    0.032   328.29
2077.00    0.031   323.70
2078.00    0.030   318.78
2079.00    0.029   313.54
2080.00    0.029   308.07
2081.00    0.028   302.43
2082.00    0.028   296.74
2083.00    0.029   291.09
2084.00    0.029   285.60
2085.00    0.030   280.34
2086.00    0.031   275.38
2087.00    0.032   270.76
2088.00    0.033   266.50
2089.00    0.035   262.60
2090.00    0.037   259.04
2091.00    0.039   255.80
2092.00    0.040   252.86
2093.00    0.042   250.18
2094.00    0.044   247.75
2095.00    0.047   245.54
2096.00    0.049   243.52
2097.00    0.051   241.67
2098.00    0.053   239.98
2099.00    0.055   238.43
2100.00    0.058   236.99
2101.00    0.060   235.67
2102.00    0.062   234.44
2103.00    0.065   233.31
2104.00    0.067   232.25
2105.00    0.069   231.26
2106.00    0.072   230.33
2107.00    0.074   229.47
2108.00    0.076   228.65
2109.00    0.078   227.88
2110.00    0.081   227.16
2111.00    0.083   226.48
2112.00    0.085   225.83
2113.00    0.087   225.22
2114.00    0.090   224.63
2115.00    0.092   224.08
2116.00    0.094   223.55
2117.00    0.096   223.04
2118.00    0.098   222.56
2119.00    0.100   222.09
2120.00    0.103   221.65
2121.00    0.105   221.22
2122.00    0.107   220.81
2123.00    0.109   220.42
2124.00    0.111   220.03
2125.00    0.112   219.67
2126.00    0.114   219.31
2127.00    0.116   218.97
2128.00    0.118   218.63
2129.00    0.120   218.31
2130.00    0.122   218.00
2131.00    0.123   217.69
2132.00    0.125   217.39
2133.00    0.127   217.11
2134.00    0.128   216.82
2135.00    0.130   216.55
2136.00    0.131   216.28
2137.00    0.133   216.02
2138.00    0.134   215.76
2139.00    0.136   215.51
2140.00    0.137   215.26
2141.00    0.138   215.02
2142.00    0.140   214.79
2143.00    0.141   214.55
2144.00    0.142   214.32






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 18:43:27



www.stella-vega.de