Double Star Calculator - Orbit

Orbital Elements for A655

WDS:	A655	WDS ID/Discoverer
P:	153.090	Orbital period (years)
a:	0.338	Semi-major axis (arcseconds)
i:	53.1	Inclination (degrees)
Ω:	157.5	Longitude of ascending node (degrees)
T:	2040.770	Epoch of periastron passage (year)
e:	0.185	Eccentricity
ω:	290.5	Longitude of periastron (degrees)
Start-Year:	1948.455	Year
End-Year:	2101.545	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A655
Position:	011114.56+411317.3	Epoch-2000 right ascension and declination
WDS-ID:	01112+4113	WDS designation
Discoverer Code:	A655	Discover designation and components
ADS number:	974	Aitken Double Star catalog
HD number:	7018	HD catalog number
Hipparcos number:	5553	Hipparcos catalog number
V1:	8.35	Magnitude of the primary
V2:	9.36	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1995	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:	Cve2006e	Reference

Double Star Orbit for A655

WDS 6th Orbit including measures of A655

-- 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 A655

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.204    26.71
--------------------------
1948.45    0.237   237.80
1949.45    0.237   240.62
1950.45    0.237   243.45
1951.45    0.237   246.28
1952.45    0.237   249.10
1953.45    0.238   251.90
1954.45    0.240   254.68
1955.45    0.241   257.42
1956.45    0.243   260.13
1957.45    0.245   262.80
1958.45    0.247   265.41
1959.45    0.250   267.98
1960.45    0.253   270.49
1961.45    0.256   272.94
1962.45    0.259   275.33
1963.45    0.263   277.66
1964.45    0.266   279.93
1965.45    0.270   282.13
1966.45    0.274   284.28
1967.45    0.278   286.36
1968.45    0.282   288.39
1969.45    0.286   290.36
1970.45    0.290   292.27
1971.45    0.294   294.13
1972.45    0.298   295.93
1973.45    0.302   297.69
1974.45    0.306   299.40
1975.45    0.310   301.07
1976.45    0.314   302.69
1977.45    0.318   304.28
1978.45    0.322   305.82
1979.45    0.326   307.34
1980.45    0.329   308.81
1981.45    0.333   310.26
1982.45    0.336   311.68
1983.45    0.339   313.07
1984.45    0.342   314.44
1985.45    0.344   315.79
1986.45    0.347   317.12
1987.45    0.349   318.42
1988.45    0.351   319.72
1989.45    0.353   321.00
1990.45    0.354   322.26
1991.45    0.356   323.52
1992.45    0.357   324.77
1993.45    0.357   326.02
1994.45    0.358   327.26
1995.45    0.358   328.49
1996.45    0.358   329.73
1997.45    0.357   330.97
1998.45    0.356   332.22
1999.45    0.355   333.47
2000.45    0.353   334.74
2001.45    0.352   336.01
2002.45    0.349   337.30
2003.45    0.347   338.61
2004.45    0.344   339.94
2005.45    0.341   341.29
2006.45    0.337   342.67
2007.45    0.333   344.08
2008.45    0.329   345.53
2009.45    0.324   347.02
2010.45    0.319   348.56
2011.45    0.313   350.14
2012.45    0.308   351.79
2013.45    0.302   353.50
2014.45    0.295   355.28
2015.45    0.288   357.14
2016.45    0.282   359.09
2017.45    0.274     1.14
2018.45    0.267     3.31
2019.45    0.259     5.60
2020.45    0.251     8.03
2021.45    0.244    10.62
2022.45    0.236    13.38
2023.45    0.228    16.33
2024.45    0.220    19.50
2025.45    0.212    22.90
2026.45    0.205    26.54
2027.45    0.198    30.46
2028.45    0.191    34.66
2029.45    0.185    39.14
2030.45    0.180    43.91
2031.45    0.175    48.95
2032.45    0.172    54.23
2033.45    0.169    59.71
2034.45    0.167    65.33
2035.45    0.167    71.01
2036.45    0.168    76.68
2037.45    0.169    82.26
2038.45    0.172    87.69
2039.45    0.176    92.92
2040.45    0.181    97.90
2041.45    0.186   102.61
2042.45    0.192   107.03
2043.45    0.199   111.18
2044.45    0.206   115.06
2045.45    0.213   118.68
2046.45    0.220   122.07
2047.45    0.227   125.24
2048.45    0.235   128.21
2049.45    0.242   131.00
2050.45    0.249   133.64
2051.45    0.256   136.13
2052.45    0.262   138.49
2053.45    0.268   140.75
2054.45    0.274   142.90
2055.45    0.280   144.96
2056.45    0.285   146.95
2057.45    0.290   148.87
2058.45    0.294   150.74
2059.45    0.298   152.55
2060.45    0.301   154.31
2061.45    0.304   156.04
2062.45    0.307   157.74
2063.45    0.309   159.41
2064.45    0.311   161.06
2065.45    0.312   162.69
2066.45    0.313   164.31
2067.45    0.314   165.93
2068.45    0.314   167.54
2069.45    0.314   169.15
2070.45    0.313   170.76
2071.45    0.312   172.38
2072.45    0.311   174.01
2073.45    0.310   175.66
2074.45    0.308   177.32
2075.45    0.306   179.00
2076.45    0.304   180.71
2077.45    0.301   182.44
2078.45    0.298   184.21
2079.45    0.296   186.00
2080.45    0.293   187.84
2081.45    0.290   189.71
2082.45    0.286   191.62
2083.45    0.283   193.57
2084.45    0.280   195.58
2085.45    0.276   197.63
2086.45    0.273   199.73
2087.45    0.270   201.88
2088.45    0.266   204.09
2089.45    0.263   206.36
2090.45    0.260   208.68
2091.45    0.257   211.06
2092.45    0.254   213.49
2093.45    0.251   215.98
2094.45    0.248   218.53
2095.45    0.246   221.12
2096.45    0.244   223.77
2097.45    0.242   226.45
2098.45    0.240   229.18
2099.45    0.239   231.94
2100.45    0.238   234.73
2101.45    0.237   237.54

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 14:48:21