Double Star Calculator - Orbit

Orbital Elements for RST23

WDS:	RST23	WDS ID/Discoverer
P:	140.000	Orbital period (years)
a:	0.569	Semi-major axis (arcseconds)
i:	105.9	Inclination (degrees)
Ω:	182.3	Longitude of ascending node (degrees)
T:	1973.590	Epoch of periastron passage (year)
e:	0.85	Eccentricity
ω:	79.4	Longitude of periastron (degrees)
Start-Year:	1955.0	Year
End-Year:	2095.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST23
Position:	005458.45-531439.0	Epoch-2000 right ascension and declination
WDS-ID:	00550-5315	WDS designation
Discoverer Code:	RST23	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.5	Magnitude of the primary
V2:	10.8	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	Tok2020e	Reference

Double Star Orbit for RST23

WDS 6th Orbit including measures of RST23

-- 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 RST23

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.403   321.40
--------------------------
1955.00    0.252   222.34
1956.00    0.252   220.45
1957.00    0.252   218.55
1958.00    0.252   216.66
1959.00    0.251   214.76
1960.00    0.251   212.85
1961.00    0.250   210.93
1962.00    0.248   208.99
1963.00    0.246   207.02
1964.00    0.242   205.00
1965.00    0.238   202.92
1966.00    0.233   200.76
1967.00    0.226   198.48
1968.00    0.216   196.03
1969.00    0.204   193.31
1970.00    0.186   190.16
1971.00    0.162   186.21
1972.00    0.125   180.37
1973.00    0.067   166.59
1974.00    0.031    51.25
1975.00    0.101    12.58
1976.00    0.157     5.11
1977.00    0.199     1.30
1978.00    0.233   358.73
1979.00    0.261   356.76
1980.00    0.284   355.14
1981.00    0.304   353.75
1982.00    0.321   352.52
1983.00    0.336   351.40
1984.00    0.349   350.38
1985.00    0.361   349.42
1986.00    0.371   348.53
1987.00    0.380   347.68
1988.00    0.389   346.87
1989.00    0.396   346.09
1990.00    0.403   345.33
1991.00    0.409   344.60
1992.00    0.414   343.89
1993.00    0.418   343.20
1994.00    0.423   342.52
1995.00    0.426   341.85
1996.00    0.429   341.20
1997.00    0.432   340.55
1998.00    0.434   339.91
1999.00    0.436   339.27
2000.00    0.438   338.65
2001.00    0.439   338.02
2002.00    0.440   337.40
2003.00    0.441   336.78
2004.00    0.441   336.16
2005.00    0.441   335.55
2006.00    0.441   334.93
2007.00    0.441   334.31
2008.00    0.441   333.69
2009.00    0.440   333.08
2010.00    0.439   332.45
2011.00    0.438   331.83
2012.00    0.437   331.20
2013.00    0.435   330.57
2014.00    0.434   329.93
2015.00    0.432   329.29
2016.00    0.430   328.64
2017.00    0.428   327.99
2018.00    0.426   327.33
2019.00    0.424   326.66
2020.00    0.421   325.99
2021.00    0.419   325.31
2022.00    0.416   324.62
2023.00    0.413   323.92
2024.00    0.411   323.21
2025.00    0.408   322.50
2026.00    0.405   321.77
2027.00    0.402   321.03
2028.00    0.398   320.28
2029.00    0.395   319.51
2030.00    0.392   318.74
2031.00    0.389   317.95
2032.00    0.385   317.15
2033.00    0.382   316.33
2034.00    0.378   315.50
2035.00    0.375   314.65
2036.00    0.371   313.79
2037.00    0.368   312.91
2038.00    0.364   312.01
2039.00    0.360   311.10
2040.00    0.357   310.16
2041.00    0.353   309.21
2042.00    0.349   308.23
2043.00    0.345   307.24
2044.00    0.342   306.22
2045.00    0.338   305.18
2046.00    0.334   304.11
2047.00    0.331   303.03
2048.00    0.327   301.92
2049.00    0.323   300.78
2050.00    0.320   299.62
2051.00    0.316   298.43
2052.00    0.312   297.21
2053.00    0.309   295.96
2054.00    0.305   294.69
2055.00    0.302   293.39
2056.00    0.299   292.05
2057.00    0.295   290.69
2058.00    0.292   289.30
2059.00    0.289   287.87
2060.00    0.286   286.42
2061.00    0.283   284.93
2062.00    0.280   283.41
2063.00    0.277   281.86
2064.00    0.274   280.28
2065.00    0.272   278.67
2066.00    0.269   277.02
2067.00    0.267   275.35
2068.00    0.265   273.65
2069.00    0.263   271.92
2070.00    0.261   270.16
2071.00    0.259   268.38
2072.00    0.257   266.57
2073.00    0.255   264.74
2074.00    0.254   262.89
2075.00    0.253   261.02
2076.00    0.252   259.13
2077.00    0.251   257.22
2078.00    0.250   255.30
2079.00    0.249   253.37
2080.00    0.249   251.43
2081.00    0.248   249.48
2082.00    0.248   247.53
2083.00    0.248   245.57
2084.00    0.248   243.61
2085.00    0.248   241.65
2086.00    0.248   239.69
2087.00    0.248   237.74
2088.00    0.249   235.79
2089.00    0.249   233.85
2090.00    0.249   231.91
2091.00    0.250   229.99
2092.00    0.250   228.07
2093.00    0.251   226.15
2094.00    0.251   224.24

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 14:45:05