Double Star Calculator - Orbit

Orbital Elements for HO369AB

WDS:	HO369AB	WDS ID/Discoverer
P:	118.100	Orbital period (years)
a:	0.247	Semi-major axis (arcseconds)
i:	74.9	Inclination (degrees)
Ω:	289.8	Longitude of ascending node (degrees)
T:	1923.620	Epoch of periastron passage (year)
e:	0.847	Eccentricity
ω:	327.3	Longitude of periastron (degrees)
Start-Year:	1965.95	Year
End-Year:	2084.05	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO369AB
Position:	095109.34+362920.8	Epoch-2000 right ascension and declination
WDS-ID:	09512+3629	WDS designation
Discoverer Code:	HO369AB	Discover designation and components
ADS number:	7541	Aitken Double Star catalog
HD number:	85177	HD catalog number
Hipparcos number:	48337	Hipparcos catalog number
V1:	8.02	Magnitude of the primary
V2:	9.85	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2020	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Alz2020c	Reference

Double Star Orbit for HO369AB

WDS 6th Orbit including measures of HO369AB

-- 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 HO369AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.264   109.01
--------------------------
1965.95    0.334    97.07
1966.95    0.339    97.29
1967.95    0.343    97.51
1968.95    0.348    97.73
1969.95    0.352    97.94
1970.95    0.356    98.15
1971.95    0.359    98.35
1972.95    0.363    98.55
1973.95    0.366    98.74
1974.95    0.370    98.93
1975.95    0.373    99.12
1976.95    0.376    99.30
1977.95    0.378    99.48
1978.95    0.381    99.66
1979.95    0.383    99.84
1980.95    0.386   100.01
1981.95    0.388   100.18
1982.95    0.390   100.35
1983.95    0.392   100.52
1984.95    0.393   100.69
1985.95    0.394   100.86
1986.95    0.396   101.02
1987.95    0.397   101.18
1988.95    0.398   101.35
1989.95    0.398   101.51
1990.95    0.399   101.67
1991.95    0.399   101.83
1992.95    0.399   102.00
1993.95    0.399   102.16
1994.95    0.399   102.32
1995.95    0.399   102.48
1996.95    0.398   102.64
1997.95    0.397   102.81
1998.95    0.396   102.97
1999.95    0.395   103.13
2000.95    0.393   103.30
2001.95    0.392   103.47
2002.95    0.390   103.64
2003.95    0.388   103.81
2004.95    0.385   103.98
2005.95    0.383   104.15
2006.95    0.380   104.33
2007.95    0.377   104.51
2008.95    0.374   104.69
2009.95    0.370   104.88
2010.95    0.366   105.07
2011.95    0.362   105.26
2012.95    0.358   105.46
2013.95    0.353   105.66
2014.95    0.348   105.87
2015.95    0.343   106.09
2016.95    0.338   106.31
2017.95    0.332   106.54
2018.95    0.325   106.78
2019.95    0.319   107.03
2020.95    0.312   107.29
2021.95    0.304   107.56
2022.95    0.296   107.85
2023.95    0.288   108.15
2024.95    0.279   108.47
2025.95    0.269   108.81
2026.95    0.259   109.18
2027.95    0.249   109.58
2028.95    0.238   110.01
2029.95    0.225   110.49
2030.95    0.213   111.03
2031.95    0.199   111.64
2032.95    0.184   112.34
2033.95    0.168   113.17
2034.95    0.151   114.19
2035.95    0.132   115.49
2036.95    0.111   117.25
2037.95    0.087   119.90
2038.95    0.061   124.69
2039.95    0.032   137.94
2040.95    0.014   232.91
2041.95    0.037   285.26
2042.95    0.044   299.97
2043.95    0.040   314.40
2044.95    0.034   333.56
2045.95    0.031   358.20
2046.95    0.034    22.79
2047.95    0.041    41.35
2048.95    0.051    53.76
2049.95    0.061    62.08
2050.95    0.072    67.90
2051.95    0.083    72.17
2052.95    0.094    75.44
2053.95    0.105    78.02
2054.95    0.116    80.13
2055.95    0.127    81.87
2056.95    0.137    83.36
2057.95    0.147    84.63
2058.95    0.157    85.75
2059.95    0.167    86.73
2060.95    0.176    87.61
2061.95    0.185    88.40
2062.95    0.194    89.12
2063.95    0.203    89.78
2064.95    0.211    90.38
2065.95    0.219    90.94
2066.95    0.227    91.45
2067.95    0.235    91.93
2068.95    0.243    92.39
2069.95    0.250    92.81
2070.95    0.257    93.21
2071.95    0.264    93.59
2072.95    0.271    93.95
2073.95    0.278    94.29
2074.95    0.284    94.62
2075.95    0.290    94.93
2076.95    0.296    95.23
2077.95    0.302    95.52
2078.95    0.308    95.79
2079.95    0.313    96.06
2080.95    0.319    96.32
2081.95    0.324    96.57
2082.95    0.329    96.81
2083.95    0.334    97.04

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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.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 16:21:38