Double Star Calculator - Orbit

Orbital Elements for HO183AB

WDS:	HO183AB	WDS ID/Discoverer
P:	129.243	Orbital period (years)
a:	2.4799	Semi-major axis (arcseconds)
i:	120.596	Inclination (degrees)
Ω:	117.37	Longitude of ascending node (degrees)
T:	1973.193	Epoch of periastron passage (year)
e:	0.99	Eccentricity
ω:	85.306	Longitude of periastron (degrees)
Start-Year:	1960.37875	Year
End-Year:	2089.62125	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO183AB
Position:	222445.44+223303.3	Epoch-2000 right ascension and declination
WDS-ID:	22248+2233	WDS designation
Discoverer Code:	HO183AB	Discover designation and components
ADS number:	15915	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	110640	Hipparcos catalog number
V1:	9.02	Magnitude of the primary
V2:	11.55	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	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:	Izm2019	Reference

Double Star Orbit for HO183AB

WDS 6th Orbit including measures of HO183AB

-- 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 HO183AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.500   218.72
--------------------------
1960.38    1.319   201.32
1961.38    1.261   200.58
1962.38    1.199   199.77
1963.38    1.135   198.86
1964.38    1.067   197.85
1965.38    0.995   196.69
1966.38    0.918   195.34
1967.38    0.837   193.75
1968.38    0.748   191.78
1969.38    0.652   189.27
1970.38    0.544   185.81
1971.38    0.420   180.47
1972.38    0.265   169.68
1973.38    0.131   275.10
1974.38    0.369   252.81
1975.38    0.521   246.50
1976.38    0.646   242.87
1977.38    0.754   240.35
1978.38    0.851   238.44
1979.38    0.940   236.91
1980.38    1.022   235.63
1981.38    1.098   234.53
1982.38    1.170   233.58
1983.38    1.238   232.73
1984.38    1.301   231.96
1985.38    1.362   231.27
1986.38    1.420   230.64
1987.38    1.475   230.05
1988.38    1.528   229.50
1989.38    1.578   228.99
1990.38    1.626   228.51
1991.38    1.672   228.06
1992.38    1.717   227.63
1993.38    1.759   227.23
1994.38    1.800   226.84
1995.38    1.839   226.47
1996.38    1.877   226.11
1997.38    1.914   225.77
1998.38    1.949   225.44
1999.38    1.982   225.12
2000.38    2.015   224.81
2001.38    2.046   224.51
2002.38    2.075   224.22
2003.38    2.104   223.94
2004.38    2.132   223.67
2005.38    2.158   223.40
2006.38    2.184   223.14
2007.38    2.208   222.88
2008.38    2.232   222.63
2009.38    2.254   222.39
2010.38    2.275   222.15
2011.38    2.296   221.91
2012.38    2.315   221.68
2013.38    2.334   221.46
2014.38    2.352   221.23
2015.38    2.369   221.01
2016.38    2.384   220.79
2017.38    2.400   220.58
2018.38    2.414   220.37
2019.38    2.427   220.16
2020.38    2.440   219.95
2021.38    2.452   219.74
2022.38    2.463   219.54
2023.38    2.473   219.34
2024.38    2.482   219.14
2025.38    2.491   218.94
2026.38    2.499   218.74
2027.38    2.506   218.54
2028.38    2.512   218.35
2029.38    2.518   218.15
2030.38    2.523   217.96
2031.38    2.527   217.77
2032.38    2.530   217.57
2033.38    2.533   217.38
2034.38    2.535   217.19
2035.38    2.536   217.00
2036.38    2.536   216.81
2037.38    2.536   216.62
2038.38    2.535   216.43
2039.38    2.533   216.23
2040.38    2.531   216.04
2041.38    2.528   215.85
2042.38    2.524   215.66
2043.38    2.519   215.46
2044.38    2.513   215.27
2045.38    2.507   215.07
2046.38    2.500   214.88
2047.38    2.493   214.68
2048.38    2.484   214.48
2049.38    2.475   214.28
2050.38    2.465   214.08
2051.38    2.454   213.88
2052.38    2.443   213.67
2053.38    2.431   213.47
2054.38    2.418   213.26
2055.38    2.404   213.04
2056.38    2.389   212.83
2057.38    2.374   212.61
2058.38    2.357   212.39
2059.38    2.340   212.17
2060.38    2.322   211.94
2061.38    2.304   211.71
2062.38    2.284   211.48
2063.38    2.264   211.24
2064.38    2.242   211.00
2065.38    2.220   210.75
2066.38    2.197   210.50
2067.38    2.172   210.24
2068.38    2.147   209.98
2069.38    2.121   209.71
2070.38    2.094   209.43
2071.38    2.066   209.15
2072.38    2.037   208.86
2073.38    2.006   208.56
2074.38    1.975   208.24
2075.38    1.942   207.92
2076.38    1.908   207.59
2077.38    1.873   207.25
2078.38    1.837   206.89
2079.38    1.799   206.52
2080.38    1.760   206.13
2081.38    1.720   205.72
2082.38    1.678   205.30
2083.38    1.634   204.85
2084.38    1.589   204.38
2085.38    1.542   203.87
2086.38    1.493   203.34
2087.38    1.442   202.77
2088.38    1.389   202.15
2089.38    1.333   201.49

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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.

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Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 18:39:37