Double Star Calculator - Orbit

Orbital Elements for HO188
WDS: HO188 WDS ID/Discoverer
P: 193.150 Orbital period (years)
a: 0.43 Semi-major axis (arcseconds)
i: 69.4 Inclination (degrees)
Ω: 219.5 Longitude of ascending node (degrees)
T: 2024.440 Epoch of periastron passage (year)
e: 0.219 Eccentricity
ω: 57.4 Longitude of periastron (degrees)
Start-Year: 1928.425 Year
End-Year: 2121.575 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HO188
Position: 224013.71+373140.5 Epoch-2000 right ascension and declination
WDS-ID: 22402+3732 WDS designation
Discoverer Code: HO188 Discover designation and components
ADS number: 16164 Aitken Double Star catalog
HD number: 214807 HD catalog number
Hipparcos number: 111919 Hipparcos catalog number
V1: 8.68 Magnitude of the primary
V2: 9.04 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2002 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: USN2006b Reference

Double Star Orbit for HO188



WDS 6th Orbit including measures of HO188

-- 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 HO188
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.183   254.75
--------------------------
1928.42    0.318    68.96
1929.42    0.311    70.16
1930.42    0.304    71.41
1931.42    0.296    72.73
1932.42    0.289    74.11
1933.42    0.282    75.56
1934.42    0.274    77.10
1935.42    0.267    78.71
1936.42    0.260    80.42
1937.42    0.253    82.23
1938.42    0.246    84.13
1939.42    0.239    86.15
1940.42    0.232    88.29
1941.42    0.225    90.56
1942.42    0.219    92.95
1943.42    0.213    95.48
1944.42    0.207    98.16
1945.42    0.202   100.98
1946.42    0.197   103.95
1947.42    0.193   107.07
1948.42    0.189   110.33
1949.42    0.185   113.72
1950.42    0.182   117.23
1951.42    0.180   120.85
1952.42    0.178   124.55
1953.42    0.177   128.31
1954.42    0.176   132.10
1955.42    0.177   135.91
1956.42    0.177   139.69
1957.42    0.179   143.42
1958.42    0.181   147.07
1959.42    0.184   150.63
1960.42    0.187   154.08
1961.42    0.191   157.40
1962.42    0.195   160.59
1963.42    0.200   163.63
1964.42    0.205   166.52
1965.42    0.210   169.28
1966.42    0.216   171.89
1967.42    0.222   174.36
1968.42    0.228   176.70
1969.42    0.234   178.92
1970.42    0.241   181.01
1971.42    0.247   183.00
1972.42    0.254   184.88
1973.42    0.261   186.67
1974.42    0.267   188.37
1975.42    0.274   189.98
1976.42    0.281   191.52
1977.42    0.287   192.98
1978.42    0.294   194.38
1979.42    0.300   195.72
1980.42    0.307   197.01
1981.42    0.313   198.24
1982.42    0.319   199.43
1983.42    0.324   200.57
1984.42    0.330   201.68
1985.42    0.335   202.75
1986.42    0.340   203.79
1987.42    0.345   204.80
1988.42    0.349   205.78
1989.42    0.353   206.74
1990.42    0.357   207.68
1991.42    0.360   208.60
1992.42    0.363   209.50
1993.42    0.366   210.39
1994.42    0.368   211.27
1995.42    0.370   212.14
1996.42    0.371   213.00
1997.42    0.372   213.85
1998.42    0.373   214.71
1999.42    0.373   215.56
2000.42    0.372   216.41
2001.42    0.371   217.26
2002.42    0.370   218.13
2003.42    0.368   219.00
2004.42    0.365   219.88
2005.42    0.362   220.77
2006.42    0.358   221.69
2007.42    0.354   222.62
2008.42    0.349   223.58
2009.42    0.344   224.56
2010.42    0.338   225.58
2011.42    0.331   226.64
2012.42    0.324   227.74
2013.42    0.317   228.89
2014.42    0.309   230.10
2015.42    0.300   231.38
2016.42    0.291   232.73
2017.42    0.282   234.17
2018.42    0.272   235.71
2019.42    0.262   237.37
2020.42    0.251   239.17
2021.42    0.240   241.13
2022.42    0.229   243.28
2023.42    0.218   245.65
2024.42    0.207   248.28
2025.42    0.195   251.21
2026.42    0.184   254.49
2027.42    0.173   258.20
2028.42    0.163   262.38
2029.42    0.153   267.12
2030.42    0.144   272.48
2031.42    0.136   278.50
2032.42    0.130   285.19
2033.42    0.125   292.47
2034.42    0.122   300.21
2035.42    0.122   308.19
2036.42    0.123   316.14
2037.42    0.126   323.79
2038.42    0.131   330.95
2039.42    0.138   337.47
2040.42    0.146   343.32
2041.42    0.156   348.52
2042.42    0.166   353.11
2043.42    0.177   357.15
2044.42    0.188     0.72
2045.42    0.199     3.88
2046.42    0.211     6.69
2047.42    0.223     9.20
2048.43    0.235    11.47
2049.43    0.247    13.51
2050.43    0.258    15.36
2051.43    0.270    17.06
2052.43    0.281    18.62
2053.43    0.293    20.05
2054.43    0.304    21.39
2055.43    0.314    22.63
2056.43    0.325    23.79
2057.43    0.335    24.87
2058.43    0.345    25.90
2059.43    0.354    26.87
2060.43    0.363    27.79
2061.43    0.372    28.67
2062.43    0.380    29.50
2063.43    0.388    30.30
2064.43    0.396    31.07
2065.43    0.403    31.81
2066.43    0.410    32.53
2067.43    0.417    33.22
2068.43    0.423    33.89
2069.43    0.429    34.54
2070.43    0.435    35.17
2071.43    0.440    35.79
2072.43    0.445    36.40
2073.43    0.449    36.99
2074.43    0.453    37.57
2075.43    0.457    38.14
2076.43    0.460    38.71
2077.43    0.463    39.26
2078.43    0.466    39.81
2079.43    0.468    40.35
2080.43    0.470    40.89
2081.43    0.471    41.43
2082.43    0.473    41.96
2083.43    0.474    42.49
2084.43    0.474    43.01
2085.43    0.474    43.54
2086.43    0.474    44.06
2087.43    0.474    44.59
2088.43    0.473    45.12
2089.43    0.473    45.64
2090.43    0.471    46.18
2091.43    0.470    46.71
2092.43    0.468    47.25
2093.43    0.466    47.79
2094.43    0.464    48.34
2095.43    0.461    48.89
2096.43    0.458    49.45
2097.43    0.455    50.02
2098.43    0.451    50.60
2099.43    0.448    51.18
2100.43    0.444    51.78
2101.43    0.440    52.38
2102.43    0.435    53.00
2103.43    0.431    53.63
2104.43    0.426    54.27
2105.43    0.421    54.93
2106.43    0.416    55.61
2107.43    0.411    56.30
2108.43    0.405    57.01
2109.43    0.399    57.74
2110.43    0.393    58.50
2111.43    0.387    59.27
2112.43    0.381    60.08
2113.43    0.375    60.90
2114.43    0.368    61.76
2115.43    0.362    62.65
2116.43    0.355    63.57
2117.43    0.348    64.53
2118.43    0.341    65.53
2119.43    0.334    66.57
2120.43    0.327    67.65
2121.43    0.319    68.79






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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 18:43:03



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