Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:51:37

Orbital Elements for A2186

WDS:	A2186	WDS ID/Discoverer
P:	170.750	Orbital period (years)
a:	0.535	Semi-major axis (arcseconds)
i:	97.9	Inclination (degrees)
Ω:	41.5	Longitude of ascending node (degrees)
T:	1902.460	Epoch of periastron passage (year)
e:	0.857	Eccentricity
ω:	274.1	Longitude of periastron (degrees)
Start-Year:	1940.0	Year
End-Year:	2110.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2186

Position:	174957.04+003043.4	Epoch-2000 right ascension and declination
WDS-ID:	17500+0031	WDS designation
Discoverer Code:	A2186	Discover designation and components
ADS number:	10819	Aitken Double Star catalog
HD number:	162232	HD catalog number
Hipparcos number:	87272	Hipparcos catalog number
V1:	9.2	Magnitude of the primary
V2:	9.4	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for A2186

WDS 6th Orbit including measures of A2186

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of A2186

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.276    245.8
-------------------------
1940.0     0.210     12.1
1941.0     0.207     11.1
1942.0     0.204     10.1
1943.0     0.200      9.0
1944.0     0.197      7.9
1945.0     0.194      6.8
1946.0     0.191      5.7
1947.0     0.188      4.5
1948.0     0.184      3.2
1949.0     0.181      1.9
1950.0     0.178      0.6
1951.0     0.175    359.3
1952.0     0.172    357.8
1953.0     0.169    356.4
1954.0     0.166    354.8
1955.0     0.163    353.3
1956.0     0.161    351.6
1957.0     0.158    350.0
1958.0     0.155    348.2
1959.0     0.153    346.4
1960.0     0.151    344.6
1961.0     0.148    342.7
1962.0     0.146    340.7
1963.0     0.144    338.7
1964.0     0.143    336.6
1965.0     0.141    334.5
1966.0     0.139    332.3
1967.0     0.138    330.1
1968.0     0.137    327.8
1969.0     0.136    325.5
1970.0     0.135    323.2
1971.0     0.135    320.9
1972.0     0.134    318.5
1973.0     0.134    316.1
1974.0     0.134    313.8
1975.0     0.135    311.4
1976.0     0.135    309.0
1977.0     0.136    306.7
1978.0     0.136    304.4
1979.0     0.137    302.1
1980.0     0.139    299.9
1981.0     0.140    297.7
1982.0     0.142    295.5
1983.0     0.143    293.4
1984.0     0.145    291.3
1985.0     0.147    289.3
1986.0     0.149    287.4
1987.0     0.152    285.5
1988.0     0.154    283.7
1989.0     0.157    281.9
1990.0     0.159    280.2
1991.0     0.162    278.5
1992.0     0.165    276.9
1993.0     0.168    275.4
1994.0     0.171    273.9
1995.0     0.174    272.4
1996.0     0.177    271.1
1997.0     0.180    269.7
1998.0     0.184    268.4
1999.0     0.187    267.2
2000.0     0.190    266.0
2001.0     0.194    264.8
2002.0     0.197    263.7
2003.0     0.201    262.6
2004.0     0.204    261.6
2005.0     0.208    260.6
2006.0     0.211    259.6
2007.0     0.215    258.7
2008.0     0.219    257.8
2009.0     0.222    256.9
2010.0     0.226    256.0
2011.0     0.229    255.2
2012.0     0.233    254.4
2013.0     0.236    253.6
2014.0     0.240    252.9
2015.0     0.243    252.1
2016.0     0.247    251.4
2017.0     0.250    250.7
2018.0     0.254    250.0
2019.0     0.257    249.4
2020.0     0.260    248.8
2021.0     0.264    248.1
2022.0     0.267    247.5
2023.0     0.270    246.9
2024.0     0.273    246.3
2025.0     0.276    245.8
2026.0     0.279    245.2
2027.0     0.282    244.7
2028.0     0.285    244.2
2029.0     0.288    243.6
2030.0     0.291    243.1
2031.0     0.293    242.6
2032.0     0.296    242.1
2033.0     0.298    241.6
2034.0     0.301    241.2
2035.0     0.303    240.7
2036.0     0.305    240.2
2037.0     0.307    239.8
2038.0     0.309    239.3
2039.0     0.311    238.9
2040.0     0.312    238.4
2041.0     0.314    238.0
2042.0     0.315    237.6
2043.0     0.316    237.1
2044.0     0.317    236.7
2045.0     0.318    236.3
2046.0     0.318    235.9
2047.0     0.319    235.4
2048.0     0.319    235.0
2049.0     0.319    234.6
2050.0     0.318    234.2
2051.0     0.317    233.8
2052.0     0.316    233.3
2053.0     0.315    232.9
2054.0     0.313    232.5
2055.0     0.311    232.0
2056.0     0.308    231.6
2057.0     0.305    231.1
2058.0     0.302    230.7
2059.0     0.297    230.2
2060.0     0.292    229.7
2061.0     0.286    229.2
2062.0     0.280    228.7
2063.0     0.272    228.1
2064.0     0.263    227.5
2065.0     0.252    226.9
2066.0     0.240    226.1
2067.0     0.225    225.4
2068.0     0.207    224.4
2069.0     0.185    223.3
2070.0     0.158    221.9
2071.0     0.123    219.7
2072.0     0.075    215.2
2073.0     0.014    173.2
2074.0     0.059     49.9
2075.0     0.109     43.4
2076.0     0.144     40.8
2077.0     0.169     39.0
2078.0     0.188     37.7
2079.0     0.202     36.6
2080.0     0.213     35.6
2081.0     0.223     34.7
2082.0     0.230     33.8
2083.0     0.235     33.1
2084.0     0.240     32.3
2085.0     0.244     31.6
2086.0     0.246     30.9
2087.0     0.249     30.2
2088.0     0.250     29.5
2089.0     0.251     28.8
2090.0     0.251     28.1
2091.0     0.252     27.4
2092.0     0.251     26.8
2093.0     0.251     26.1
2094.0     0.250     25.4
2095.0     0.249     24.7
2096.0     0.247     24.0
2097.0     0.246     23.3
2098.0     0.244     22.6
2099.0     0.242     21.9
2100.0     0.240     21.1
2101.0     0.237     20.4
2102.0     0.235     19.6
2103.0     0.232     18.8
2104.0     0.230     18.0
2105.0     0.227     17.2
2106.0     0.224     16.4
2107.0     0.221     15.5
2108.0     0.218     14.6
2109.0     0.215     13.7

Disclaimer

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.