Double Star Calculator - Orbit

Orbital Elements for HU1570

WDS:	HU1570	WDS ID/Discoverer
P:	221.500	Orbital period (years)
a:	0.672	Semi-major axis (arcseconds)
i:	22.9	Inclination (degrees)
Ω:	155.0	Longitude of ascending node (degrees)
T:	1955.830	Epoch of periastron passage (year)
e:	0.748	Eccentricity
ω:	34.0	Longitude of periastron (degrees)
Start-Year:	1914.25	Year
End-Year:	2135.75	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU1570
Position:	055802.61-521216.3	Epoch-2000 right ascension and declination
WDS-ID:	05580-5212	WDS designation
Discoverer Code:	HU1570	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	40767	HD catalog number
Hipparcos number:	28240	Hipparcos catalog number
V1:	9.47	Magnitude of the primary
V2:	9.66	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Hrt2010a	Reference

Double Star Orbit for HU1570

WDS 6th Orbit including measures of HU1570

-- 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 HU1570

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.057   352.51
--------------------------
1914.25    0.777    37.83
1915.25    0.766    38.59
1916.25    0.754    39.36
1917.25    0.743    40.16
1918.25    0.731    40.99
1919.25    0.719    41.84
1920.25    0.707    42.72
1921.25    0.695    43.64
1922.25    0.683    44.58
1923.25    0.670    45.56
1924.25    0.657    46.58
1925.25    0.644    47.64
1926.25    0.630    48.75
1927.25    0.617    49.90
1928.25    0.603    51.11
1929.25    0.588    52.38
1930.25    0.574    53.71
1931.25    0.559    55.10
1932.25    0.544    56.58
1933.25    0.529    58.13
1934.25    0.514    59.79
1935.25    0.498    61.54
1936.25    0.482    63.41
1937.25    0.465    65.41
1938.25    0.449    67.56
1939.25    0.432    69.87
1940.25    0.415    72.38
1941.25    0.397    75.10
1942.25    0.380    78.07
1943.25    0.362    81.33
1944.25    0.344    84.94
1945.25    0.326    88.94
1946.25    0.308    93.42
1947.25    0.289    98.46
1948.25    0.271   104.19
1949.25    0.253   110.73
1950.25    0.236   118.26
1951.25    0.219   126.98
1952.25    0.203   137.10
1953.25    0.189   148.85
1954.25    0.177   162.33
1955.25    0.168   177.48
1956.25    0.164   193.80
1957.25    0.166   210.37
1958.25    0.173   226.07
1959.25    0.186   240.04
1960.25    0.203   251.97
1961.25    0.222   261.94
1962.25    0.243   270.25
1963.25    0.265   277.21
1964.25    0.288   283.08
1965.25    0.310   288.11
1966.25    0.333   292.46
1967.25    0.355   296.26
1968.25    0.376   299.63
1969.25    0.398   302.63
1970.25    0.418   305.32
1971.25    0.439   307.77
1972.25    0.458   310.00
1973.25    0.478   312.05
1974.25    0.497   313.94
1975.25    0.515   315.69
1976.25    0.533   317.33
1977.25    0.551   318.85
1978.25    0.568   320.29
1979.25    0.585   321.64
1980.25    0.601   322.92
1981.25    0.617   324.13
1982.25    0.632   325.28
1983.25    0.648   326.37
1984.25    0.663   327.42
1985.25    0.677   328.42
1986.25    0.691   329.38
1987.25    0.705   330.30
1988.25    0.719   331.18
1989.25    0.732   332.04
1990.25    0.745   332.86
1991.25    0.758   333.65
1992.25    0.770   334.42
1993.25    0.782   335.17
1994.25    0.794   335.89
1995.25    0.805   336.59
1996.25    0.817   337.28
1997.25    0.828   337.94
1998.25    0.838   338.59
1999.25    0.849   339.22
2000.25    0.859   339.83
2001.25    0.869   340.43
2002.25    0.879   341.02
2003.25    0.889   341.59
2004.25    0.898   342.15
2005.25    0.907   342.71
2006.25    0.916   343.25
2007.25    0.925   343.77
2008.25    0.934   344.29
2009.25    0.942   344.80
2010.25    0.950   345.30
2011.25    0.958   345.80
2012.25    0.966   346.28
2013.25    0.974   346.76
2014.25    0.981   347.23
2015.25    0.988   347.69
2016.25    0.995   348.15
2017.25    1.002   348.60
2018.25    1.009   349.04
2019.25    1.015   349.48
2020.25    1.021   349.91
2021.25    1.028   350.34
2022.25    1.034   350.76
2023.25    1.039   351.18
2024.25    1.045   351.59
2025.25    1.050   352.00
2026.25    1.056   352.41
2027.25    1.061   352.81
2028.25    1.066   353.21
2029.25    1.071   353.60
2030.25    1.075   353.99
2031.25    1.080   354.38
2032.25    1.084   354.76
2033.25    1.088   355.14
2034.25    1.092   355.52
2035.25    1.096   355.89
2036.25    1.100   356.26
2037.25    1.104   356.63
2038.25    1.107   357.00
2039.25    1.110   357.36
2040.25    1.114   357.73
2041.25    1.117   358.09
2042.25    1.119   358.45
2043.25    1.122   358.80
2044.25    1.125   359.16
2045.25    1.127   359.51
2046.25    1.129   359.87
2047.25    1.132     0.22
2048.25    1.134     0.57
2049.25    1.135     0.92
2050.25    1.137     1.26
2051.25    1.139     1.61
2052.25    1.140     1.96
2053.25    1.142     2.30
2054.25    1.143     2.64
2055.25    1.144     2.99
2056.25    1.145     3.33
2057.25    1.146     3.67
2058.25    1.146     4.01
2059.25    1.147     4.36
2060.25    1.147     4.70
2061.25    1.147     5.04
2062.25    1.148     5.38
2063.25    1.148     5.72
2064.25    1.147     6.06
2065.25    1.147     6.40
2066.25    1.147     6.74
2067.25    1.146     7.08
2068.25    1.145     7.43
2069.25    1.145     7.77
2070.25    1.144     8.11
2071.25    1.143     8.45
2072.25    1.141     8.80
2073.25    1.140     9.14
2074.25    1.139     9.49
2075.25    1.137     9.83
2076.25    1.135    10.18
2077.25    1.133    10.53
2078.25    1.131    10.88
2079.25    1.129    11.23
2080.25    1.127    11.58
2081.25    1.125    11.94
2082.25    1.122    12.29
2083.25    1.120    12.65
2084.25    1.117    13.01
2085.25    1.114    13.37
2086.25    1.111    13.73
2087.25    1.108    14.10
2088.25    1.104    14.47
2089.25    1.101    14.83
2090.25    1.097    15.21
2091.25    1.093    15.58
2092.25    1.090    15.96
2093.25    1.086    16.34
2094.25    1.081    16.72
2095.25    1.077    17.10
2096.25    1.073    17.49
2097.25    1.068    17.88
2098.25    1.064    18.28
2099.25    1.059    18.68
2100.25    1.054    19.08
2101.25    1.049    19.49
2102.25    1.043    19.90
2103.25    1.038    20.31
2104.25    1.032    20.73
2105.25    1.027    21.15
2106.25    1.021    21.58
2107.25    1.015    22.01
2108.25    1.009    22.45
2109.25    1.002    22.90
2110.25    0.996    23.34
2111.25    0.989    23.80
2112.25    0.983    24.26
2113.25    0.976    24.73
2114.25    0.969    25.20
2115.25    0.962    25.69
2116.25    0.954    26.18
2117.25    0.947    26.67
2118.25    0.939    27.18
2119.25    0.931    27.69
2120.25    0.923    28.21
2121.25    0.915    28.74
2122.25    0.907    29.28
2123.25    0.898    29.84
2124.25    0.889    30.40
2125.25    0.881    30.97
2126.25    0.872    31.55
2127.25    0.862    32.15
2128.25    0.853    32.76
2129.25    0.843    33.39
2130.25    0.834    34.02
2131.25    0.824    34.68
2132.25    0.814    35.35
2133.25    0.803    36.03
2134.25    0.793    36.74
2135.25    0.782    37.46

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 15:41:57