Double Star Calculator - Orbit

Orbital Elements for DAW105

WDS:	DAW105	WDS ID/Discoverer
P:	150.000	Orbital period (years)
a:	0.256	Semi-major axis (arcseconds)
i:	84.6	Inclination (degrees)
Ω:	227.9	Longitude of ascending node (degrees)
T:	2032.600	Epoch of periastron passage (year)
e:	0.817	Eccentricity
ω:	233.7	Longitude of periastron (degrees)
Start-Year:	1950.0	Year
End-Year:	2100.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DAW105
Position:	124723.24-293526.0	Epoch-2000 right ascension and declination
WDS-ID:	12474-2935	WDS designation
Discoverer Code:	DAW105	Discover designation and components
ADS number:	8665	Aitken Double Star catalog
HD number:	111139	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.4	Magnitude of the primary
V2:	9.7	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	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:	Tok2021f	Reference

Double Star Orbit for DAW105

WDS 6th Orbit including measures of DAW105

-- 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 DAW105

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.065    38.97
--------------------------
1950.00    0.296   234.41
1951.00    0.294   234.51
1952.00    0.291   234.61
1953.00    0.289   234.71
1954.00    0.287   234.81
1955.00    0.284   234.92
1956.00    0.282   235.03
1957.00    0.279   235.13
1958.00    0.277   235.25
1959.00    0.274   235.36
1960.00    0.271   235.47
1961.00    0.268   235.59
1962.00    0.265   235.71
1963.00    0.262   235.83
1964.00    0.259   235.96
1965.00    0.256   236.09
1966.00    0.252   236.22
1967.00    0.249   236.36
1968.00    0.245   236.50
1969.00    0.242   236.64
1970.00    0.238   236.79
1971.00    0.235   236.94
1972.00    0.231   237.10
1973.00    0.227   237.26
1974.00    0.223   237.43
1975.00    0.219   237.60
1976.00    0.215   237.79
1977.00    0.211   237.97
1978.00    0.207   238.17
1979.00    0.203   238.37
1980.00    0.198   238.58
1981.00    0.194   238.81
1982.00    0.190   239.04
1983.00    0.185   239.28
1984.00    0.181   239.54
1985.00    0.176   239.81
1986.00    0.171   240.09
1987.00    0.166   240.39
1988.00    0.162   240.71
1989.00    0.157   241.04
1990.00    0.152   241.40
1991.00    0.147   241.79
1992.00    0.142   242.20
1993.00    0.137   242.64
1994.00    0.131   243.11
1995.00    0.126   243.63
1996.00    0.121   244.19
1997.00    0.115   244.80
1998.00    0.110   245.47
1999.00    0.105   246.21
2000.00    0.099   247.03
2001.00    0.094   247.95
2002.00    0.088   248.99
2003.00    0.082   250.16
2004.00    0.077   251.51
2005.00    0.071   253.07
2006.00    0.066   254.90
2007.00    0.060   257.07
2008.00    0.054   259.69
2009.00    0.049   262.90
2010.00    0.044   266.91
2011.00    0.038   272.01
2012.00    0.034   278.61
2013.00    0.029   287.25
2014.00    0.026   298.43
2015.00    0.024   312.28
2016.00    0.023   327.83
2017.00    0.024   343.10
2018.00    0.027   356.27
2019.00    0.030     6.75
2020.00    0.035    14.82
2021.00    0.040    21.03
2022.00    0.044    25.89
2023.00    0.049    29.78
2024.00    0.054    32.96
2025.00    0.059    35.63
2026.00    0.063    37.93
2027.00    0.066    39.97
2028.00    0.069    41.84
2029.00    0.069    43.63
2030.00    0.066    45.48
2031.00    0.059    47.64
2032.00    0.042    50.96
2033.00    0.017    62.42
2034.00    0.015   208.15
2035.00    0.043   221.03
2036.00    0.068   223.90
2037.00    0.090   225.28
2038.00    0.109   226.15
2039.00    0.126   226.77
2040.00    0.141   227.25
2041.00    0.155   227.64
2042.00    0.168   227.97
2043.00    0.179   228.25
2044.00    0.190   228.50
2045.00    0.199   228.73
2046.00    0.209   228.93
2047.00    0.217   229.12
2048.00    0.225   229.30
2049.00    0.232   229.46
2050.00    0.239   229.61
2051.00    0.245   229.76
2052.00    0.251   229.90
2053.00    0.257   230.03
2054.00    0.262   230.16
2055.00    0.267   230.28
2056.00    0.272   230.40
2057.00    0.276   230.51
2058.00    0.280   230.62
2059.00    0.284   230.73
2060.00    0.287   230.83
2061.00    0.291   230.93
2062.00    0.294   231.03
2063.00    0.297   231.13
2064.00    0.299   231.23
2065.00    0.302   231.32
2066.00    0.304   231.42
2067.00    0.306   231.51
2068.00    0.308   231.60
2069.00    0.309   231.69
2070.00    0.311   231.78
2071.00    0.312   231.86
2072.00    0.313   231.95
2073.00    0.314   232.04
2074.00    0.315   232.12
2075.00    0.316   232.21
2076.00    0.317   232.30
2077.00    0.317   232.38
2078.00    0.317   232.47
2079.00    0.318   232.55
2080.00    0.318   232.63
2081.00    0.318   232.72
2082.00    0.317   232.80
2083.00    0.317   232.89
2084.00    0.317   232.97
2085.00    0.316   233.06
2086.00    0.315   233.14
2087.00    0.315   233.23
2088.00    0.314   233.32
2089.00    0.313   233.40
2090.00    0.312   233.49
2091.00    0.311   233.58
2092.00    0.309   233.67
2093.00    0.308   233.76
2094.00    0.306   233.85
2095.00    0.305   233.94
2096.00    0.303   234.03
2097.00    0.302   234.13
2098.00    0.300   234.22
2099.00    0.298   234.32

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 16:50:02