Double Star Calculator - Orbit

Orbital Elements for HDS1542AB

WDS:	HDS1542AB	WDS ID/Discoverer
P:	121.700	Orbital period (years)
a:	0.518	Semi-major axis (arcseconds)
i:	60.5	Inclination (degrees)
Ω:	235.0	Longitude of ascending node (degrees)
T:	2100.600	Epoch of periastron passage (year)
e:	0.412	Eccentricity
ω:	250.4	Longitude of periastron (degrees)
Start-Year:	1964.15	Year
End-Year:	2085.85	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1542AB
Position:	104724.29+023532.0	Epoch-2000 right ascension and declination
WDS-ID:	10474+0236	WDS designation
Discoverer Code:	HDS1542AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	52774	Hipparcos catalog number
V1:	12.91	Magnitude of the primary
V2:	13.20	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Hor2020	Reference

Double Star Orbit for HDS1542AB

WDS 6th Orbit including measures of HDS1542AB

-- 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 HDS1542AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.514   267.28
--------------------------
1964.15    0.411    45.43
1965.15    0.405    47.57
1966.15    0.399    49.77
1967.15    0.390    52.06
1968.15    0.380    54.46
1969.15    0.368    57.00
1970.15    0.355    59.72
1971.15    0.339    62.68
1972.15    0.321    65.96
1973.15    0.301    69.64
1974.15    0.280    73.86
1975.15    0.257    78.81
1976.15    0.234    84.74
1977.15    0.210    91.99
1978.15    0.189   100.99
1979.15    0.170   112.13
1980.15    0.157   125.52
1981.15    0.152   140.51
1982.15    0.156   155.62
1983.15    0.168   169.28
1984.15    0.186   180.71
1985.15    0.208   189.90
1986.15    0.233   197.25
1987.15    0.258   203.17
1988.15    0.284   208.03
1989.15    0.309   212.09
1990.15    0.333   215.56
1991.15    0.356   218.56
1992.15    0.378   221.21
1993.15    0.398   223.58
1994.15    0.417   225.72
1995.15    0.435   227.68
1996.15    0.452   229.49
1997.15    0.467   231.18
1998.15    0.481   232.77
1999.15    0.493   234.27
2000.15    0.505   235.70
2001.15    0.515   237.07
2002.15    0.524   238.39
2003.15    0.532   239.67
2004.15    0.539   240.91
2005.15    0.545   242.12
2006.15    0.550   243.31
2007.15    0.555   244.48
2008.15    0.558   245.63
2009.15    0.561   246.76
2010.15    0.563   247.89
2011.15    0.564   249.01
2012.15    0.564   250.13
2013.15    0.564   251.25
2014.15    0.563   252.37
2015.15    0.562   253.50
2016.15    0.560   254.63
2017.15    0.557   255.77
2018.15    0.554   256.92
2019.15    0.551   258.09
2020.15    0.547   259.27
2021.15    0.543   260.47
2022.15    0.538   261.69
2023.15    0.533   262.93
2024.15    0.528   264.19
2025.15    0.522   265.49
2026.15    0.516   266.81
2027.15    0.509   268.17
2028.15    0.503   269.56
2029.15    0.496   270.98
2030.15    0.489   272.45
2031.15    0.482   273.96
2032.15    0.475   275.52
2033.15    0.468   277.12
2034.15    0.460   278.77
2035.15    0.453   280.48
2036.15    0.445   282.25
2037.15    0.438   284.08
2038.15    0.430   285.97
2039.15    0.423   287.92
2040.15    0.416   289.95
2041.15    0.409   292.04
2042.15    0.402   294.21
2043.15    0.395   296.45
2044.15    0.389   298.77
2045.15    0.383   301.17
2046.15    0.377   303.64
2047.15    0.371   306.19
2048.15    0.366   308.81
2049.15    0.361   311.50
2050.15    0.357   314.26
2051.15    0.354   317.08
2052.15    0.350   319.95
2053.15    0.348   322.88
2054.15    0.346   325.84
2055.15    0.344   328.84
2056.15    0.343   331.86
2057.15    0.343   334.89
2058.15    0.343   337.92
2059.15    0.344   340.94
2060.15    0.345   343.95
2061.15    0.347   346.93
2062.15    0.349   349.88
2063.15    0.352   352.78
2064.15    0.355   355.64
2065.15    0.358   358.44
2066.15    0.362     1.19
2067.15    0.366     3.87
2068.15    0.371     6.50
2069.15    0.375     9.06
2070.15    0.380    11.56
2071.15    0.385    13.99
2072.15    0.389    16.37
2073.15    0.394    18.70
2074.15    0.398    20.97
2075.15    0.402    23.19
2076.15    0.406    25.37
2077.15    0.410    27.51
2078.15    0.413    29.61
2079.15    0.415    31.69
2080.15    0.417    33.74
2081.15    0.418    35.78
2082.15    0.419    37.81
2083.15    0.418    39.85
2084.15    0.416    41.89
2085.15    0.413    43.96

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 16:30:42