Double Star Calculator - Orbit

Orbital Elements for RST3401

WDS:	RST3401	WDS ID/Discoverer
P:	126.180	Orbital period (years)
a:	0.325	Semi-major axis (arcseconds)
i:	146.2	Inclination (degrees)
Ω:	98.9	Longitude of ascending node (degrees)
T:	1967.680	Epoch of periastron passage (year)
e:	0.366	Eccentricity
ω:	52.9	Longitude of periastron (degrees)
Start-Year:	1961.91	Year
End-Year:	2088.09	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST3401
Position:	043726.28-095101.2	Epoch-2000 right ascension and declination
WDS-ID:	04374-0951	WDS designation
Discoverer Code:	RST3401	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	29392	HD catalog number
Hipparcos number:	21536	Hipparcos catalog number
V1:	9.25	Magnitude of the primary
V2:	9.88	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	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:	Tok2015c	Reference

Double Star Orbit for RST3401

WDS 6th Orbit including measures of RST3401

-- 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 RST3401

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.404   237.38
--------------------------
1961.91    0.215    85.35
1962.91    0.209    80.17
1963.91    0.204    74.70
1964.91    0.198    68.92
1965.91    0.193    62.82
1966.91    0.188    56.38
1967.91    0.184    49.63
1968.91    0.180    42.59
1969.91    0.178    35.34
1970.91    0.177    27.96
1971.91    0.178    20.55
1972.91    0.179    13.23
1973.91    0.182     6.10
1974.91    0.187   359.25
1975.91    0.192   352.75
1976.91    0.199   346.63
1977.91    0.206   340.92
1978.91    0.213   335.61
1979.91    0.222   330.69
1980.91    0.230   326.12
1981.91    0.239   321.89
1982.91    0.248   317.96
1983.91    0.257   314.30
1984.91    0.266   310.88
1985.91    0.274   307.68
1986.91    0.283   304.68
1987.91    0.291   301.85
1988.91    0.299   299.17
1989.91    0.307   296.63
1990.91    0.314   294.21
1991.91    0.322   291.91
1992.91    0.328   289.70
1993.91    0.335   287.59
1994.91    0.341   285.55
1995.91    0.347   283.59
1996.91    0.353   281.69
1997.91    0.358   279.85
1998.91    0.364   278.06
1999.91    0.368   276.32
2000.91    0.373   274.62
2001.91    0.377   272.96
2002.91    0.381   271.34
2003.91    0.385   269.75
2004.91    0.388   268.19
2005.91    0.391   266.65
2006.91    0.394   265.14
2007.91    0.396   263.65
2008.91    0.399   262.18
2009.91    0.401   260.72
2010.91    0.403   259.27
2011.91    0.404   257.84
2012.91    0.406   256.42
2013.91    0.407   255.01
2014.91    0.408   253.60
2015.91    0.408   252.20
2016.91    0.409   250.81
2017.91    0.409   249.42
2018.91    0.409   248.02
2019.91    0.409   246.63
2020.91    0.409   245.24
2021.91    0.409   243.85
2022.91    0.408   242.45
2023.91    0.407   241.05
2024.91    0.406   239.64
2025.91    0.405   238.22
2026.91    0.404   236.80
2027.91    0.403   235.37
2028.91    0.401   233.92
2029.91    0.399   232.47
2030.91    0.398   231.00
2031.91    0.396   229.52
2032.91    0.394   228.02
2033.91    0.392   226.51
2034.91    0.389   224.98
2035.91    0.387   223.43
2036.91    0.384   221.87
2037.91    0.382   220.28
2038.91    0.379   218.67
2039.91    0.377   217.04
2040.91    0.374   215.39
2041.91    0.371   213.71
2042.91    0.368   212.00
2043.91    0.365   210.27
2044.91    0.362   208.50
2045.91    0.359   206.71
2046.91    0.356   204.89
2047.91    0.353   203.03
2048.91    0.350   201.14
2049.91    0.347   199.22
2050.91    0.343   197.26
2051.91    0.340   195.27
2052.91    0.337   193.23
2053.91    0.334   191.16
2054.91    0.331   189.05
2055.91    0.327   186.89
2056.91    0.324   184.70
2057.91    0.321   182.46
2058.91    0.318   180.18
2059.91    0.315   177.85
2060.91    0.312   175.47
2061.91    0.309   173.05
2062.91    0.306   170.58
2063.91    0.303   168.06
2064.91    0.300   165.49
2065.91    0.297   162.87
2066.91    0.294   160.20
2067.91    0.291   157.48
2068.91    0.288   154.70
2069.91    0.285   151.87
2070.91    0.282   148.98
2071.91    0.280   146.03
2072.91    0.277   143.01
2073.91    0.274   139.94
2074.91    0.271   136.79
2075.91    0.268   133.58
2076.91    0.264   130.28
2077.91    0.261   126.91
2078.91    0.258   123.44
2079.91    0.254   119.88
2080.91    0.250   116.21
2081.91    0.246   112.42
2082.91    0.242   108.49
2083.91    0.237   104.42
2084.91    0.232   100.18
2085.91    0.227    95.76
2086.91    0.222    91.12
2087.91    0.216    86.25

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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 15:27:45