Double Star Calculator - Orbit

Orbital Elements for HO152

WDS:	HO152	WDS ID/Discoverer
P:	202.000	Orbital period (years)
a:	0.377	Semi-major axis (arcseconds)
i:	70.3	Inclination (degrees)
Ω:	131.0	Longitude of ascending node (degrees)
T:	2014.660	Epoch of periastron passage (year)
e:	0.504	Eccentricity
ω:	44.0	Longitude of periastron (degrees)
Start-Year:	1924.0	Year
End-Year:	2126.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO152
Position:	211231.11+282039.1	Epoch-2000 right ascension and declination
WDS-ID:	21125+2821	WDS designation
Discoverer Code:	HO152	Discover designation and components
ADS number:	14748	Aitken Double Star catalog
HD number:	202015	HD catalog number
Hipparcos number:	104701	Hipparcos catalog number
V1:	8.87	Magnitude of the primary
V2:	9.39	Magnitude of the secondary
Equinox:		Equinox
Date:	2016	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Doc2021e	Reference

Double Star Orbit for HO152

WDS 6th Orbit including measures of HO152

-- 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 HO152

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.102   264.87
--------------------------
1924.00    0.383   333.65
1925.00    0.378   334.16
1926.00    0.373   334.69
1927.00    0.368   335.22
1928.00    0.363   335.77
1929.00    0.358   336.34
1930.00    0.352   336.93
1931.00    0.347   337.53
1932.00    0.342   338.15
1933.00    0.336   338.80
1934.00    0.330   339.46
1935.00    0.325   340.15
1936.00    0.319   340.86
1937.00    0.313   341.60
1938.00    0.308   342.36
1939.00    0.302   343.15
1940.00    0.296   343.98
1941.00    0.290   344.84
1942.00    0.284   345.73
1943.00    0.278   346.67
1944.00    0.272   347.64
1945.00    0.266   348.66
1946.00    0.260   349.72
1947.00    0.254   350.84
1948.00    0.248   352.00
1949.00    0.242   353.23
1950.00    0.236   354.52
1951.00    0.231   355.87
1952.00    0.225   357.29
1953.00    0.219   358.79
1954.00    0.213     0.37
1955.00    0.208     2.04
1956.00    0.202     3.80
1957.00    0.197     5.66
1958.00    0.191     7.62
1959.00    0.186     9.70
1960.00    0.181    11.89
1961.00    0.176    14.20
1962.00    0.172    16.63
1963.00    0.167    19.20
1964.00    0.163    21.90
1965.00    0.160    24.73
1966.00    0.156    27.69
1967.00    0.153    30.78
1968.00    0.150    33.99
1969.00    0.148    37.31
1970.00    0.146    40.73
1971.00    0.145    44.23
1972.00    0.144    47.78
1973.00    0.143    51.38
1974.00    0.143    54.99
1975.00    0.143    58.60
1976.00    0.144    62.17
1977.00    0.145    65.70
1978.00    0.147    69.15
1979.00    0.149    72.52
1980.00    0.152    75.79
1981.00    0.154    78.94
1982.00    0.157    81.98
1983.00    0.161    84.90
1984.00    0.164    87.69
1985.00    0.168    90.37
1986.00    0.172    92.92
1987.00    0.176    95.36
1988.00    0.180    97.69
1989.00    0.184    99.92
1990.00    0.188   102.06
1991.00    0.192   104.10
1992.00    0.196   106.06
1993.00    0.200   107.95
1994.00    0.203   109.76
1995.00    0.206   111.52
1996.00    0.210   113.23
1997.00    0.212   114.88
1998.00    0.214   116.50
1999.00    0.216   118.09
2000.00    0.218   119.66
2001.00    0.218   121.21
2002.00    0.219   122.75
2003.00    0.218   124.30
2004.00    0.217   125.86
2005.00    0.214   127.45
2006.00    0.211   129.08
2007.00    0.207   130.77
2008.00    0.202   132.53
2009.00    0.196   134.39
2010.00    0.188   136.39
2011.00    0.180   138.56
2012.00    0.171   140.96
2013.00    0.160   143.65
2014.00    0.149   146.73
2015.00    0.137   150.32
2016.00    0.125   154.61
2017.00    0.113   159.85
2018.00    0.101   166.37
2019.00    0.089   174.60
2020.00    0.080   184.99
2021.00    0.073   197.74
2022.00    0.070   212.31
2023.00    0.071   227.24
2024.00    0.077   240.83
2025.00    0.085   252.15
2026.00    0.096   261.13
2027.00    0.109   268.18
2028.00    0.122   273.74
2029.00    0.136   278.20
2030.00    0.150   281.83
2031.00    0.164   284.84
2032.00    0.177   287.38
2033.00    0.191   289.55
2034.00    0.204   291.44
2035.00    0.218   293.09
2036.00    0.230   294.57
2037.00    0.243   295.88
2038.00    0.255   297.07
2039.00    0.267   298.16
2040.00    0.278   299.15
2041.00    0.289   300.07
2042.00    0.300   300.92
2043.00    0.310   301.71
2044.00    0.320   302.45
2045.00    0.330   303.15
2046.00    0.339   303.81
2047.00    0.348   304.44
2048.00    0.357   305.03
2049.00    0.365   305.60
2050.00    0.373   306.14
2051.00    0.380   306.66
2052.00    0.388   307.16
2053.00    0.395   307.64
2054.00    0.402   308.11
2055.00    0.408   308.56
2056.00    0.414   308.99
2057.00    0.420   309.42
2058.00    0.426   309.83
2059.00    0.431   310.23
2060.00    0.436   310.62
2061.00    0.441   311.00
2062.00    0.446   311.38
2063.00    0.450   311.75
2064.00    0.454   312.11
2065.00    0.458   312.46
2066.00    0.462   312.81
2067.00    0.465   313.15
2068.00    0.469   313.49
2069.00    0.472   313.82
2070.00    0.475   314.15
2071.00    0.477   314.48
2072.00    0.480   314.80
2073.00    0.482   315.12
2074.00    0.484   315.44
2075.00    0.486   315.75
2076.00    0.487   316.06
2077.00    0.489   316.37
2078.00    0.490   316.68
2079.00    0.491   316.99
2080.00    0.492   317.29
2081.00    0.493   317.60
2082.00    0.493   317.90
2083.00    0.494   318.20
2084.00    0.494   318.50
2085.00    0.494   318.81
2086.00    0.494   319.11
2087.00    0.494   319.41
2088.00    0.493   319.71
2089.00    0.493   320.02
2090.00    0.492   320.32
2091.00    0.491   320.63
2092.00    0.490   320.93
2093.00    0.489   321.24
2094.00    0.488   321.55
2095.00    0.486   321.86
2096.00    0.485   322.17
2097.00    0.483   322.49
2098.00    0.481   322.81
2099.00    0.479   323.12
2100.00    0.477   323.45
2101.00    0.475   323.77
2102.00    0.473   324.10
2103.00    0.470   324.43
2104.00    0.468   324.77
2105.00    0.465   325.11
2106.00    0.462   325.45
2107.00    0.459   325.80
2108.00    0.456   326.15
2109.00    0.453   326.51
2110.00    0.450   326.87
2111.00    0.446   327.24
2112.00    0.443   327.61
2113.00    0.439   327.99
2114.00    0.435   328.38
2115.00    0.432   328.77
2116.00    0.428   329.17
2117.00    0.424   329.58
2118.00    0.419   329.99
2119.00    0.415   330.41
2120.00    0.411   330.85
2121.00    0.406   331.29
2122.00    0.402   331.74
2123.00    0.397   332.20
2124.00    0.393   332.67
2125.00    0.388   333.16

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 18:23:38