Double Star Calculator - Orbit

Orbital Elements for A1226

WDS:	A1226	WDS ID/Discoverer
P:	124.200	Orbital period (years)
a:	0.325	Semi-major axis (arcseconds)
i:	105.6	Inclination (degrees)
Ω:	116.5	Longitude of ascending node (degrees)
T:	1963.490	Epoch of periastron passage (year)
e:	0.871	Eccentricity
ω:	281.0	Longitude of periastron (degrees)
Start-Year:	1962.9	Year
End-Year:	2087.1	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1226
Position:	215717.70+324032.4	Epoch-2000 right ascension and declination
WDS-ID:	21573+3241	WDS designation
Discoverer Code:	A1226	Discover designation and components
ADS number:	15487	Aitken Double Star catalog
HD number:	208687	HD catalog number
Hipparcos number:	108373	Hipparcos catalog number
V1:	9.29	Magnitude of the primary
V2:	9.90	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	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:	Sca2019b	Reference

Double Star Orbit for A1226

WDS 6th Orbit including measures of A1226

-- 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 A1226

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.200   349.71
--------------------------
1962.90    0.030   275.15
1963.90    0.033   131.93
1964.90    0.070   115.62
1965.90    0.091   109.40
1966.90    0.103   105.12
1967.90    0.112   101.62
1968.90    0.117    98.55
1969.90    0.122    95.72
1970.90    0.125    93.06
1971.90    0.127    90.52
1972.90    0.129    88.05
1973.90    0.130    85.63
1974.90    0.131    83.25
1975.90    0.131    80.90
1976.90    0.132    78.57
1977.90    0.132    76.25
1978.90    0.132    73.94
1979.90    0.132    71.63
1980.90    0.133    69.33
1981.90    0.133    67.02
1982.90    0.133    64.73
1983.90    0.133    62.43
1984.90    0.133    60.14
1985.90    0.133    57.85
1986.90    0.133    55.57
1987.90    0.134    53.30
1988.90    0.134    51.05
1989.90    0.135    48.81
1990.90    0.135    46.58
1991.90    0.136    44.38
1992.90    0.137    42.20
1993.90    0.137    40.04
1994.90    0.138    37.92
1995.90    0.139    35.82
1996.90    0.141    33.76
1997.90    0.142    31.73
1998.90    0.143    29.73
1999.90    0.145    27.78
2000.90    0.146    25.86
2001.90    0.148    23.98
2002.90    0.149    22.14
2003.90    0.151    20.35
2004.90    0.153    18.59
2005.90    0.155    16.88
2006.90    0.156    15.20
2007.90    0.158    13.57
2008.90    0.160    11.98
2009.90    0.162    10.43
2010.90    0.165     8.91
2011.90    0.167     7.44
2012.90    0.169     6.00
2013.90    0.171     4.60
2014.90    0.173     3.24
2015.90    0.176     1.91
2016.90    0.178     0.62
2017.90    0.180   359.35
2018.90    0.183   358.12
2019.90    0.185   356.93
2020.90    0.187   355.76
2021.90    0.189   354.62
2022.90    0.192   353.50
2023.90    0.194   352.42
2024.90    0.196   351.36
2025.90    0.199   350.32
2026.90    0.201   349.31
2027.90    0.203   348.32
2028.90    0.206   347.35
2029.90    0.208   346.41
2030.90    0.210   345.48
2031.90    0.212   344.57
2032.90    0.214   343.68
2033.90    0.216   342.81
2034.90    0.219   341.96
2035.90    0.221   341.12
2036.90    0.223   340.29
2037.90    0.224   339.48
2038.90    0.226   338.69
2039.90    0.228   337.90
2040.90    0.230   337.13
2041.90    0.232   336.37
2042.90    0.233   335.62
2043.90    0.235   334.89
2044.90    0.236   334.16
2045.90    0.238   333.44
2046.90    0.239   332.73
2047.90    0.240   332.02
2048.90    0.242   331.33
2049.90    0.243   330.64
2050.90    0.244   329.95
2051.90    0.245   329.28
2052.90    0.245   328.60
2053.90    0.246   327.93
2054.90    0.247   327.27
2055.90    0.247   326.60
2056.90    0.247   325.94
2057.90    0.247   325.28
2058.90    0.247   324.62
2059.90    0.247   323.96
2060.90    0.247   323.30
2061.90    0.247   322.63
2062.90    0.246   321.96
2063.90    0.245   321.29
2064.90    0.244   320.62
2065.90    0.243   319.93
2066.90    0.241   319.24
2067.90    0.239   318.54
2068.90    0.237   317.82
2069.90    0.234   317.09
2070.90    0.232   316.35
2071.90    0.228   315.59
2072.90    0.225   314.80
2073.90    0.221   313.99
2074.90    0.216   313.14
2075.90    0.211   312.25
2076.90    0.205   311.32
2077.90    0.199   310.33
2078.90    0.191   309.26
2079.90    0.182   308.10
2080.90    0.172   306.82
2081.90    0.161   305.36
2082.90    0.147   303.65
2083.90    0.130   301.54
2084.90    0.109   298.69
2085.90    0.080   294.14
2086.90    0.040   282.02

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 18:34:31