Double Star Calculator - Orbit

Orbital Elements for A1260AB

WDS:	A1260AB	WDS ID/Discoverer
P:	137.170	Orbital period (years)
a:	0.288	Semi-major axis (arcseconds)
i:	78.1	Inclination (degrees)
Ω:	242.2	Longitude of ascending node (degrees)
T:	2029.430	Epoch of periastron passage (year)
e:	0.489	Eccentricity
ω:	274.29	Longitude of periastron (degrees)
Start-Year:	1956.415	Year
End-Year:	2093.585	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1260AB
Position:	011308.90+294159.1	Epoch-2000 right ascension and declination
WDS-ID:	01131+2942	WDS designation
Discoverer Code:	A1260AB	Discover designation and components
ADS number:	993	Aitken Double Star catalog
HD number:	7255	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.19	Magnitude of the primary
V2:	9.4	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	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:	USN2017b	Reference

Double Star Orbit for A1260AB

WDS 6th Orbit including measures of A1260AB

-- 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 A1260AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.061    90.62
--------------------------
1956.41    0.088   330.78
1957.41    0.088   335.80
1958.41    0.089   340.77
1959.41    0.091   345.60
1960.41    0.093   350.26
1961.41    0.095   354.69
1962.41    0.098   358.86
1963.41    0.102     2.77
1964.41    0.106     6.41
1965.41    0.110     9.79
1966.41    0.114    12.91
1967.41    0.119    15.79
1968.41    0.124    18.44
1969.41    0.129    20.90
1970.41    0.134    23.16
1971.41    0.139    25.25
1972.41    0.145    27.19
1973.41    0.150    28.99
1974.41    0.156    30.67
1975.41    0.161    32.23
1976.41    0.167    33.69
1977.41    0.172    35.05
1978.41    0.178    36.34
1979.41    0.183    37.54
1980.41    0.188    38.68
1981.41    0.193    39.75
1982.41    0.199    40.77
1983.41    0.204    41.74
1984.41    0.209    42.66
1985.41    0.213    43.54
1986.41    0.218    44.38
1987.41    0.223    45.19
1988.41    0.227    45.96
1989.41    0.231    46.71
1990.41    0.235    47.43
1991.41    0.239    48.12
1992.41    0.243    48.80
1993.41    0.246    49.45
1994.41    0.249    50.09
1995.41    0.252    50.72
1996.41    0.255    51.32
1997.41    0.257    51.92
1998.41    0.259    52.51
1999.41    0.261    53.09
2000.41    0.262    53.66
2001.41    0.263    54.23
2002.41    0.264    54.79
2003.41    0.264    55.36
2004.41    0.263    55.92
2005.41    0.263    56.49
2006.41    0.261    57.06
2007.41    0.260    57.63
2008.41    0.257    58.22
2009.41    0.254    58.82
2010.41    0.250    59.43
2011.41    0.246    60.07
2012.41    0.241    60.73
2013.41    0.235    61.42
2014.41    0.228    62.15
2015.41    0.220    62.93
2016.41    0.211    63.77
2017.41    0.202    64.69
2018.41    0.191    65.71
2019.41    0.179    66.86
2020.41    0.165    68.18
2021.41    0.151    69.75
2022.41    0.135    71.67
2023.41    0.118    74.12
2024.41    0.100    77.41
2025.41    0.082    82.17
2026.41    0.063    89.76
2027.41    0.045   103.53
2028.41    0.033   130.95
2029.41    0.032   171.62
2030.41    0.044   200.21
2031.41    0.062   214.59
2032.41    0.081   222.46
2033.41    0.099   227.37
2034.41    0.117   230.76
2035.41    0.133   233.27
2036.41    0.148   235.25
2037.41    0.162   236.87
2038.41    0.175   238.24
2039.41    0.186   239.44
2040.41    0.196   240.51
2041.41    0.205   241.48
2042.41    0.213   242.38
2043.41    0.220   243.22
2044.41    0.225   244.01
2045.41    0.230   244.76
2046.41    0.234   245.49
2047.41    0.237   246.20
2048.41    0.239   246.89
2049.41    0.241   247.57
2050.41    0.242   248.24
2051.41    0.243   248.90
2052.41    0.243   249.57
2053.41    0.242   250.24
2054.41    0.241   250.91
2055.41    0.240   251.59
2056.41    0.238   252.27
2057.41    0.235   252.97
2058.41    0.233   253.69
2059.41    0.230   254.42
2060.41    0.227   255.17
2061.41    0.223   255.94
2062.41    0.220   256.74
2063.41    0.216   257.56
2064.41    0.212   258.42
2065.41    0.207   259.31
2066.41    0.203   260.24
2067.41    0.198   261.21
2068.41    0.193   262.23
2069.41    0.189   263.31
2070.41    0.183   264.44
2071.41    0.178   265.64
2072.41    0.173   266.91
2073.41    0.168   268.25
2074.41    0.162   269.69
2075.41    0.157   271.22
2076.41    0.152   272.87
2077.41    0.146   274.63
2078.41    0.141   276.52
2079.41    0.136   278.57
2080.41    0.131   280.78
2081.41    0.126   283.16
2082.41    0.121   285.75
2083.41    0.116   288.55
2084.41    0.111   291.58
2085.41    0.107   294.86
2086.41    0.103   298.40
2087.41    0.100   302.22
2088.41    0.096   306.30
2089.41    0.094   310.64
2090.41    0.091   315.21
2091.41    0.090   319.99
2092.41    0.089   324.91
2093.41    0.088   329.92

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 14:48:38