Double Star Calculator - Orbit

Orbital Elements for HU972

WDS:	HU972	WDS ID/Discoverer
P:	150.810	Orbital period (years)
a:	0.321	Semi-major axis (arcseconds)
i:	47.3	Inclination (degrees)
Ω:	189.1	Longitude of ascending node (degrees)
T:	1963.650	Epoch of periastron passage (year)
e:	0.633	Eccentricity
ω:	276.1	Longitude of periastron (degrees)
Start-Year:	1949.595	Year
End-Year:	2100.405	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU972
Position:	215104.93+665014.7	Epoch-2000 right ascension and declination
WDS-ID:	21511+6650	WDS designation
Discoverer Code:	HU972	Discover designation and components
ADS number:	15398	Aitken Double Star catalog
HD number:	208074	HD catalog number
Hipparcos number:	107855	Hipparcos catalog number
V1:	9.09	Magnitude of the primary
V2:	9.54	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:	n	Flags
Ephemerides:		Ephemerides
Code:	Hrt2014b	Reference

Double Star Orbit for HU972

WDS 6th Orbit including measures of HU972

-- 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 HU972

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.349   275.10
--------------------------
1949.60    0.238     0.49
1950.60    0.229     2.85
1951.60    0.220     5.41
1952.60    0.209     8.22
1953.60    0.198    11.32
1954.60    0.187    14.81
1955.60    0.174    18.79
1956.60    0.160    23.42
1957.60    0.146    28.92
1958.60    0.131    35.66
1959.60    0.116    44.13
1960.60    0.102    55.05
1961.60    0.090    69.25
1962.60    0.082    87.02
1963.60    0.080   106.96
1964.60    0.086   125.99
1965.60    0.096   141.84
1966.60    0.109   154.21
1967.60    0.123   163.81
1968.60    0.138   171.41
1969.60    0.151   177.62
1970.60    0.164   182.84
1971.60    0.175   187.33
1972.60    0.186   191.28
1973.60    0.196   194.81
1974.60    0.205   198.01
1975.60    0.214   200.95
1976.60    0.222   203.67
1977.60    0.229   206.22
1978.60    0.236   208.62
1979.60    0.242   210.88
1980.60    0.248   213.04
1981.60    0.253   215.10
1982.60    0.258   217.08
1983.60    0.263   218.99
1984.60    0.267   220.83
1985.60    0.271   222.61
1986.60    0.275   224.34
1987.60    0.279   226.02
1988.60    0.283   227.66
1989.60    0.286   229.25
1990.60    0.289   230.82
1991.60    0.292   232.35
1992.60    0.295   233.84
1993.60    0.298   235.31
1994.60    0.300   236.76
1995.60    0.303   238.18
1996.60    0.305   239.58
1997.60    0.308   240.95
1998.60    0.310   242.31
1999.60    0.312   243.64
2000.60    0.314   244.96
2001.60    0.316   246.26
2002.60    0.318   247.55
2003.60    0.320   248.82
2004.60    0.321   250.08
2005.60    0.323   251.32
2006.60    0.325   252.56
2007.60    0.326   253.78
2008.60    0.328   254.98
2009.60    0.329   256.18
2010.60    0.331   257.37
2011.60    0.332   258.54
2012.60    0.333   259.71
2013.60    0.335   260.86
2014.60    0.336   262.01
2015.60    0.337   263.15
2016.60    0.339   264.28
2017.60    0.340   265.40
2018.60    0.341   266.52
2019.60    0.342   267.63
2020.60    0.343   268.73
2021.60    0.344   269.82
2022.60    0.345   270.91
2023.60    0.346   271.99
2024.60    0.347   273.06
2025.60    0.348   274.13
2026.60    0.349   275.20
2027.60    0.350   276.25
2028.60    0.351   277.31
2029.60    0.351   278.35
2030.60    0.352   279.40
2031.60    0.353   280.44
2032.60    0.354   281.47
2033.60    0.354   282.50
2034.60    0.355   283.53
2035.60    0.356   284.55
2036.60    0.356   285.57
2037.60    0.357   286.58
2038.60    0.358   287.59
2039.60    0.358   288.60
2040.60    0.359   289.61
2041.60    0.359   290.61
2042.60    0.360   291.61
2043.60    0.360   292.61
2044.60    0.360   293.60
2045.60    0.361   294.60
2046.60    0.361   295.59
2047.60    0.361   296.58
2048.60    0.361   297.57
2049.60    0.361   298.56
2050.60    0.362   299.55
2051.60    0.362   300.53
2052.60    0.362   301.52
2053.60    0.362   302.51
2054.60    0.362   303.49
2055.60    0.362   304.48
2056.60    0.361   305.47
2057.60    0.361   306.46
2058.60    0.361   307.45
2059.60    0.361   308.44
2060.60    0.360   309.44
2061.60    0.360   310.44
2062.60    0.359   311.43
2063.60    0.359   312.44
2064.60    0.358   313.44
2065.60    0.357   314.45
2066.60    0.356   315.47
2067.60    0.355   316.49
2068.60    0.354   317.51
2069.60    0.353   318.55
2070.60    0.352   319.58
2071.60    0.351   320.63
2072.60    0.350   321.68
2073.60    0.348   322.74
2074.60    0.346   323.81
2075.60    0.345   324.90
2076.60    0.343   325.99
2077.60    0.341   327.09
2078.60    0.339   328.21
2079.60    0.337   329.34
2080.60    0.334   330.49
2081.60    0.332   331.65
2082.60    0.329   332.84
2083.60    0.326   334.04
2084.60    0.323   335.26
2085.60    0.320   336.51
2086.60    0.316   337.79
2087.60    0.313   339.09
2088.60    0.309   340.43
2089.60    0.305   341.80
2090.60    0.300   343.21
2091.60    0.296   344.66
2092.60    0.291   346.17
2093.60    0.285   347.72
2094.60    0.280   349.34
2095.60    0.274   351.03
2096.60    0.267   352.79
2097.60    0.260   354.65
2098.60    0.253   356.61
2099.60    0.245   358.70

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 18:32:58