Double Star Calculator - Orbit

Orbital Elements for DON93BC

WDS:	DON93BC	WDS ID/Discoverer
P:	116.600	Orbital period (years)
a:	1.287	Semi-major axis (arcseconds)
i:	139.3	Inclination (degrees)
Ω:	93.3	Longitude of ascending node (degrees)
T:	2005.800	Epoch of periastron passage (year)
e:	0.293	Eccentricity
ω:	280.3	Longitude of periastron (degrees)
Start-Year:	1966.7	Year
End-Year:	2083.3	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DON93BC
Position:	050649.47-213503.7	Epoch-2000 right ascension and declination
WDS-ID:	05069-2135	WDS designation
Discoverer Code:	DON93BC	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	11.71	Magnitude of the primary
V2:	12.9	Magnitude of the secondary
Equinox:		Equinox
Date:	2020	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:	USN2021b	Reference

Double Star Orbit for DON93BC

WDS 6th Orbit including measures of DON93BC

-- 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 DON93BC

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.199    79.47
--------------------------
1966.70    1.376   309.56
1967.70    1.378   307.60
1968.70    1.379   305.65
1969.70    1.379   303.70
1970.70    1.378   301.75
1971.70    1.377   299.80
1972.70    1.374   297.84
1973.70    1.370   295.87
1974.70    1.365   293.89
1975.70    1.359   291.89
1976.70    1.351   289.87
1977.70    1.342   287.83
1978.70    1.331   285.75
1979.70    1.319   283.64
1980.70    1.305   281.49
1981.70    1.290   279.29
1982.70    1.273   277.03
1983.70    1.254   274.70
1984.70    1.233   272.31
1985.70    1.210   269.82
1986.70    1.186   267.24
1987.70    1.160   264.54
1988.70    1.131   261.72
1989.70    1.102   258.75
1990.70    1.070   255.60
1991.70    1.037   252.27
1992.70    1.003   248.70
1993.70    0.968   244.89
1994.70    0.932   240.78
1995.70    0.896   236.34
1996.70    0.861   231.54
1997.70    0.827   226.33
1998.70    0.794   220.68
1999.70    0.764   214.57
2000.70    0.739   207.99
2001.70    0.718   200.99
2002.70    0.703   193.63
2003.70    0.694   186.01
2004.70    0.692   178.28
2005.70    0.697   170.58
2006.70    0.709   163.07
2007.70    0.726   155.86
2008.70    0.749   149.04
2009.70    0.776   142.65
2010.70    0.805   136.72
2011.70    0.837   131.21
2012.70    0.869   126.12
2013.70    0.902   121.39
2014.70    0.935   116.99
2015.70    0.966   112.89
2016.70    0.997   109.04
2017.70    1.026   105.41
2018.70    1.053   101.98
2019.70    1.078    98.72
2020.70    1.101    95.60
2021.70    1.123    92.60
2022.70    1.142    89.71
2023.70    1.160    86.91
2024.70    1.176    84.20
2025.70    1.190    81.54
2026.70    1.202    78.95
2027.70    1.212    76.41
2028.70    1.222    73.91
2029.70    1.229    71.44
2030.70    1.236    69.00
2031.70    1.241    66.58
2032.70    1.245    64.18
2033.70    1.249    61.80
2034.70    1.251    59.43
2035.70    1.253    57.06
2036.70    1.253    54.70
2037.70    1.254    52.34
2038.70    1.254    49.98
2039.70    1.253    47.62
2040.70    1.253    45.26
2041.70    1.251    42.90
2042.70    1.250    40.53
2043.70    1.249    38.16
2044.70    1.248    35.78
2045.70    1.247    33.39
2046.70    1.245    31.01
2047.70    1.244    28.61
2048.70    1.244    26.22
2049.70    1.243    23.82
2050.70    1.243    21.42
2051.70    1.243    19.02
2052.70    1.244    16.63
2053.70    1.244    14.23
2054.70    1.246    11.84
2055.70    1.247     9.45
2056.70    1.249     7.07
2057.70    1.252     4.70
2058.70    1.254     2.34
2059.70    1.258   359.99
2060.70    1.261   357.65
2061.70    1.265   355.33
2062.70    1.270   353.02
2063.70    1.274   350.73
2064.70    1.279   348.46
2065.70    1.285   346.20
2066.70    1.290   343.97
2067.70    1.296   341.75
2068.70    1.302   339.55
2069.70    1.308   337.38
2070.70    1.314   335.22
2071.70    1.320   333.08
2072.70    1.327   330.97
2073.70    1.333   328.87
2074.70    1.339   326.79
2075.70    1.344   324.73
2076.70    1.350   322.69
2077.70    1.355   320.66
2078.70    1.360   318.65
2079.70    1.365   316.66
2080.70    1.369   314.67
2081.70    1.372   312.70
2082.70    1.375   310.73

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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 15:33:58