Double Star Calculator - Orbit

Orbital Elements for HO44
WDS: HO44 WDS ID/Discoverer
P: 256.040 Orbital period (years)
a: 0.433 Semi-major axis (arcseconds)
i: 143.6 Inclination (degrees)
Ω: 65.2 Longitude of ascending node (degrees)
T: 1942.680 Epoch of periastron passage (year)
e: 0.984 Eccentricity
ω: 52.7 Longitude of periastron (degrees)
Start-Year: 1896.98 Year
End-Year: 2153.02 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HO44
Position: 101201.24-061210.3 Epoch-2000 right ascension and declination
WDS-ID: 10120-0612 WDS designation
Discoverer Code: HO44 Discover designation and components
ADS number: 7675 Aitken Double Star catalog
HD number: 88478 HD catalog number
Hipparcos number: 49961 Hipparcos catalog number
V1: 8.53 Magnitude of the primary
V2: 8.93 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2004 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: Zir2008 Reference

Double Star Orbit for HO44



WDS 6th Orbit including measures of HO44

-- 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 HO44
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.708   201.66
--------------------------
1896.98    0.529   191.71
1897.98    0.523   191.57
1898.98    0.517   191.43
1899.98    0.510   191.29
1900.98    0.504   191.14
1901.98    0.498   190.99
1902.98    0.491   190.83
1903.98    0.484   190.67
1904.98    0.477   190.51
1905.98    0.470   190.34
1906.98    0.463   190.17
1907.98    0.456   189.99
1908.98    0.449   189.81
1909.98    0.441   189.61
1910.98    0.433   189.42
1911.98    0.426   189.21
1912.98    0.418   189.00
1913.98    0.409   188.78
1914.98    0.401   188.55
1915.98    0.392   188.31
1916.98    0.384   188.06
1917.98    0.375   187.79
1918.98    0.366   187.52
1919.98    0.356   187.23
1920.98    0.347   186.92
1921.98    0.337   186.60
1922.98    0.327   186.25
1923.98    0.316   185.89
1924.98    0.306   185.50
1925.98    0.295   185.08
1926.98    0.284   184.63
1927.98    0.272   184.14
1928.98    0.260   183.60
1929.98    0.248   183.02
1930.98    0.235   182.37
1931.98    0.222   181.65
1932.98    0.208   180.83
1933.98    0.194   179.89
1934.98    0.179   178.80
1935.98    0.163   177.50
1936.98    0.146   175.91
1937.98    0.128   173.88
1938.98    0.108   171.16
1939.98    0.087   167.17
1940.98    0.063   160.31
1941.98    0.033   142.76
1942.98    0.022   257.31
1943.98    0.064   232.38
1944.98    0.093   226.11
1945.98    0.118   222.71
1946.98    0.140   220.45
1947.98    0.160   218.77
1948.98    0.179   217.46
1949.98    0.196   216.38
1950.98    0.212   215.48
1951.98    0.228   214.69
1952.98    0.242   214.01
1953.98    0.256   213.40
1954.98    0.270   212.86
1955.98    0.283   212.36
1956.98    0.295   211.91
1957.98    0.307   211.49
1958.98    0.319   211.11
1959.98    0.330   210.75
1960.98    0.341   210.41
1961.98    0.352   210.10
1962.98    0.362   209.80
1963.98    0.372   209.52
1964.98    0.382   209.25
1965.98    0.391   209.00
1966.98    0.400   208.76
1967.98    0.409   208.53
1968.98    0.418   208.31
1969.98    0.427   208.09
1970.98    0.435   207.89
1971.98    0.443   207.69
1972.98    0.451   207.51
1973.98    0.459   207.32
1974.98    0.467   207.15
1975.98    0.474   206.98
1976.98    0.482   206.81
1977.98    0.489   206.65
1978.98    0.496   206.49
1979.98    0.503   206.34
1980.98    0.510   206.20
1981.98    0.516   206.05
1982.98    0.523   205.91
1983.98    0.529   205.77
1984.98    0.535   205.64
1985.98    0.541   205.51
1986.98    0.547   205.38
1987.98    0.553   205.26
1988.98    0.559   205.14
1989.98    0.565   205.02
1990.98    0.570   204.90
1991.98    0.576   204.78
1992.98    0.581   204.67
1993.98    0.586   204.56
1994.98    0.591   204.45
1995.98    0.596   204.34
1996.98    0.601   204.24
1997.98    0.606   204.13
1998.98    0.611   204.03
1999.98    0.615   203.93
2000.98    0.620   203.83
2001.98    0.624   203.73
2002.98    0.629   203.64
2003.98    0.633   203.54
2004.98    0.637   203.45
2005.98    0.641   203.36
2006.98    0.645   203.27
2007.98    0.649   203.17
2008.98    0.653   203.09
2009.98    0.657   203.00
2010.98    0.660   202.91
2011.98    0.664   202.82
2012.98    0.667   202.74
2013.98    0.671   202.65
2014.98    0.674   202.57
2015.98    0.677   202.49
2016.98    0.681   202.41
2017.98    0.684   202.32
2018.98    0.687   202.24
2019.98    0.690   202.16
2020.98    0.693   202.09
2021.98    0.696   202.01
2022.98    0.698   201.93
2023.98    0.701   201.85
2024.98    0.704   201.78
2025.98    0.706   201.70
2026.98    0.709   201.62
2027.98    0.711   201.55
2028.98    0.714   201.47
2029.98    0.716   201.40
2030.98    0.718   201.33
2031.98    0.720   201.25
2032.98    0.723   201.18
2033.98    0.725   201.11
2034.98    0.727   201.04
2035.98    0.728   200.97
2036.98    0.730   200.89
2037.98    0.732   200.82
2038.98    0.734   200.75
2039.98    0.735   200.68
2040.98    0.737   200.61
2041.98    0.739   200.54
2042.98    0.740   200.48
2043.98    0.742   200.41
2044.98    0.743   200.34
2045.98    0.744   200.27
2046.98    0.745   200.20
2047.98    0.747   200.13
2048.98    0.748   200.07
2049.98    0.749   200.00
2050.98    0.750   199.93
2051.98    0.751   199.86
2052.98    0.752   199.80
2053.98    0.752   199.73
2054.98    0.753   199.66
2055.98    0.754   199.60
2056.98    0.754   199.53
2057.98    0.755   199.46
2058.98    0.756   199.40
2059.98    0.756   199.33
2060.98    0.756   199.26
2061.98    0.757   199.20
2062.98    0.757   199.13
2063.98    0.757   199.07
2064.98    0.757   199.00
2065.98    0.758   198.94
2066.98    0.758   198.87
2067.98    0.758   198.80
2068.98    0.758   198.74
2069.98    0.757   198.67
2070.98    0.757   198.61
2071.98    0.757   198.54
2072.98    0.757   198.47
2073.98    0.756   198.41
2074.98    0.756   198.34
2075.98    0.756   198.28
2076.98    0.755   198.21
2077.98    0.754   198.14
2078.98    0.754   198.08
2079.98    0.753   198.01
2080.98    0.752   197.94
2081.98    0.752   197.88
2082.98    0.751   197.81
2083.98    0.750   197.74
2084.98    0.749   197.67
2085.98    0.748   197.61
2086.98    0.747   197.54
2087.98    0.746   197.47
2088.98    0.744   197.40
2089.98    0.743   197.34
2090.98    0.742   197.27
2091.98    0.740   197.20
2092.98    0.739   197.13
2093.98    0.737   197.06
2094.98    0.736   196.99
2095.98    0.734   196.92
2096.98    0.733   196.85
2097.98    0.731   196.78
2098.98    0.729   196.71
2099.98    0.727   196.64
2100.98    0.725   196.56
2101.98    0.723   196.49
2102.98    0.721   196.42
2103.98    0.719   196.35
2104.98    0.717   196.27
2105.98    0.715   196.20
2106.98    0.712   196.13
2107.98    0.710   196.05
2108.98    0.708   195.98
2109.98    0.705   195.90
2110.98    0.703   195.82
2111.98    0.700   195.75
2112.98    0.697   195.67
2113.98    0.695   195.59
2114.98    0.692   195.51
2115.98    0.689   195.43
2116.98    0.686   195.35
2117.98    0.683   195.27
2118.98    0.680   195.19
2119.98    0.677   195.11
2120.98    0.673   195.03
2121.98    0.670   194.94
2122.98    0.667   194.86
2123.98    0.663   194.77
2124.98    0.660   194.69
2125.98    0.656   194.60
2126.98    0.653   194.51
2127.98    0.649   194.42
2128.98    0.645   194.33
2129.98    0.641   194.24
2130.98    0.637   194.15
2131.98    0.633   194.05
2132.98    0.629   193.96
2133.98    0.625   193.86
2134.98    0.621   193.76
2135.98    0.616   193.67
2136.98    0.612   193.57
2137.98    0.607   193.46
2138.98    0.603   193.36
2139.98    0.598   193.26
2140.98    0.593   193.15
2141.98    0.589   193.04
2142.98    0.584   192.93
2143.98    0.579   192.82
2144.98    0.574   192.71
2145.98    0.568   192.59
2146.98    0.563   192.47
2147.98    0.558   192.35
2148.98    0.552   192.23
2149.98    0.547   192.10
2150.98    0.541   191.97
2151.98    0.535   191.84
2152.98    0.529   191.71






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 16:25:10



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