Double Star Calculator - Orbit

Orbital Elements for HU922AA,AB

WDS:	HU922AA,AB	WDS ID/Discoverer
P:	132.400	Orbital period (years)
a:	0.299	Semi-major axis (arcseconds)
i:	137.6	Inclination (degrees)
Ω:	203.1	Longitude of ascending node (degrees)
T:	1995.120	Epoch of periastron passage (year)
e:	0.462	Eccentricity
ω:	58.1	Longitude of periastron (degrees)
Start-Year:	1958.8	Year
End-Year:	2091.2	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU922AA,AB
Position:	172503.29+344355.4	Epoch-2000 right ascension and declination
WDS-ID:	17251+3444	WDS designation
Discoverer Code:	HU922AA,AB	Discover designation and components
ADS number:	10542	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	85238	Hipparcos catalog number
V1:	10.21	Magnitude of the primary
V2:	11.03	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	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:	FMR2016b	Reference

Double Star Orbit for HU922AA,AB

WDS 6th Orbit including measures of HU922AA,AB

-- 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 HU922AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.343    14.03
--------------------------
1958.80    0.275   285.36
1959.80    0.272   283.24
1960.80    0.270   281.07
1961.80    0.267   278.86
1962.80    0.264   276.61
1963.80    0.262   274.31
1964.80    0.260   271.97
1965.80    0.257   269.58
1966.80    0.255   267.15
1967.80    0.252   264.68
1968.80    0.250   262.15
1969.80    0.248   259.59
1970.80    0.246   256.97
1971.80    0.243   254.31
1972.80    0.241   251.59
1973.80    0.239   248.83
1974.80    0.236   246.01
1975.80    0.234   243.13
1976.80    0.231   240.19
1977.80    0.229   237.19
1978.80    0.226   234.11
1979.80    0.223   230.95
1980.80    0.220   227.70
1981.80    0.216   224.35
1982.80    0.212   220.87
1983.80    0.208   217.27
1984.80    0.203   213.50
1985.80    0.198   209.54
1986.80    0.192   205.36
1987.80    0.186   200.90
1988.80    0.179   196.12
1989.80    0.172   190.95
1990.80    0.164   185.31
1991.80    0.156   179.10
1992.80    0.148   172.22
1993.80    0.141   164.58
1994.80    0.134   156.11
1995.80    0.128   146.82
1996.80    0.125   136.84
1997.80    0.123   126.42
1998.80    0.124   115.96
1999.80    0.127   105.85
2000.80    0.133    96.44
2001.80    0.140    87.91
2002.80    0.149    80.31
2003.80    0.159    73.60
2004.80    0.170    67.70
2005.80    0.180    62.49
2006.80    0.191    57.88
2007.80    0.202    53.76
2008.80    0.213    50.05
2009.80    0.223    46.70
2010.80    0.233    43.65
2011.80    0.243    40.84
2012.80    0.253    38.25
2013.80    0.262    35.84
2014.80    0.270    33.59
2015.80    0.278    31.47
2016.80    0.286    29.48
2017.80    0.294    27.58
2018.80    0.301    25.78
2019.80    0.307    24.06
2020.80    0.314    22.41
2021.80    0.320    20.82
2022.80    0.325    19.29
2023.80    0.331    17.81
2024.80    0.335    16.38
2025.80    0.340    14.98
2026.80    0.344    13.62
2027.80    0.348    12.30
2028.80    0.352    11.00
2029.80    0.355     9.72
2030.80    0.359     8.48
2031.80    0.361     7.25
2032.80    0.364     6.04
2033.80    0.366     4.84
2034.80    0.369     3.67
2035.80    0.370     2.50
2036.80    0.372     1.34
2037.80    0.373     0.20
2038.80    0.375   359.06
2039.80    0.376   357.93
2040.80    0.377   356.81
2041.80    0.377   355.68
2042.80    0.378   354.57
2043.80    0.378   353.45
2044.80    0.378   352.34
2045.80    0.378   351.22
2046.80    0.378   350.11
2047.80    0.377   348.99
2048.80    0.377   347.87
2049.80    0.376   346.74
2050.80    0.375   345.62
2051.80    0.374   344.48
2052.80    0.373   343.34
2053.80    0.372   342.19
2054.80    0.370   341.03
2055.80    0.369   339.87
2056.80    0.367   338.69
2057.80    0.365   337.50
2058.80    0.364   336.31
2059.80    0.362   335.09
2060.80    0.360   333.87
2061.80    0.357   332.63
2062.80    0.355   331.38
2063.80    0.353   330.11
2064.80    0.350   328.82
2065.80    0.348   327.51
2066.80    0.345   326.19
2067.80    0.343   324.85
2068.80    0.340   323.48
2069.80    0.337   322.09
2070.80    0.335   320.68
2071.80    0.332   319.25
2072.80    0.329   317.79
2073.80    0.326   316.31
2074.80    0.323   314.80
2075.80    0.320   313.26
2076.80    0.317   311.69
2077.80    0.314   310.10
2078.80    0.311   308.47
2079.80    0.308   306.81
2080.80    0.305   305.12
2081.80    0.302   303.39
2082.80    0.299   301.63
2083.80    0.296   299.84
2084.80    0.293   298.01
2085.80    0.290   296.14
2086.80    0.287   294.23
2087.80    0.285   292.28
2088.80    0.282   290.30
2089.80    0.279   288.27
2090.80    0.276   286.20

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 17:38:26