Double Star Calculator - Orbit

Orbital Elements for RST3945

WDS:	RST3945	WDS ID/Discoverer
P:	132.300	Orbital period (years)
a:	0.355	Semi-major axis (arcseconds)
i:	53.1	Inclination (degrees)
Ω:	51.2	Longitude of ascending node (degrees)
T:	1921.190	Epoch of periastron passage (year)
e:	0.161	Eccentricity
ω:	58.4	Longitude of periastron (degrees)
Start-Year:	1958.85	Year
End-Year:	2091.15	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST3945
Position:	162619.21-094325.4	Epoch-2000 right ascension and declination
WDS-ID:	16263-0943	WDS designation
Discoverer Code:	RST3945	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	148131	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.7	Magnitude of the primary
V2:	9.7	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	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:	Tok2020g	Reference

Double Star Orbit for RST3945

WDS 6th Orbit including measures of RST3945

-- 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 RST3945

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.312    29.55
--------------------------
1958.85    0.375   229.93
1959.85    0.378   231.36
1960.85    0.380   232.78
1961.85    0.382   234.18
1962.85    0.383   235.57
1963.85    0.383   236.96
1964.85    0.384   238.34
1965.85    0.383   239.72
1966.85    0.383   241.10
1967.85    0.382   242.49
1968.85    0.380   243.89
1969.85    0.378   245.31
1970.85    0.376   246.73
1971.85    0.374   248.18
1972.85    0.371   249.65
1973.85    0.367   251.14
1974.85    0.364   252.66
1975.85    0.360   254.21
1976.85    0.356   255.80
1977.85    0.352   257.42
1978.85    0.347   259.09
1979.85    0.342   260.80
1980.85    0.337   262.56
1981.85    0.332   264.38
1982.85    0.327   266.25
1983.85    0.321   268.19
1984.85    0.316   270.19
1985.85    0.310   272.27
1986.85    0.305   274.42
1987.85    0.299   276.65
1988.85    0.293   278.97
1989.85    0.288   281.38
1990.85    0.283   283.87
1991.85    0.277   286.47
1992.85    0.272   289.16
1993.85    0.268   291.95
1994.85    0.263   294.84
1995.85    0.259   297.82
1996.85    0.255   300.91
1997.85    0.251   304.08
1998.85    0.248   307.33
1999.85    0.246   310.67
2000.85    0.243   314.07
2001.85    0.242   317.52
2002.85    0.241   321.01
2003.85    0.240   324.53
2004.85    0.240   328.06
2005.85    0.240   331.58
2006.85    0.241   335.09
2007.85    0.243   338.56
2008.85    0.245   341.98
2009.85    0.247   345.35
2010.85    0.250   348.64
2011.85    0.253   351.86
2012.85    0.256   354.99
2013.85    0.260   358.04
2014.85    0.264     1.00
2015.85    0.268     3.87
2016.85    0.273     6.65
2017.85    0.277     9.34
2018.85    0.281    11.94
2019.85    0.286    14.47
2020.85    0.290    16.92
2021.85    0.295    19.29
2022.85    0.299    21.60
2023.85    0.303    23.85
2024.85    0.306    26.04
2025.85    0.310    28.18
2026.85    0.313    30.27
2027.85    0.316    32.33
2028.85    0.318    34.35
2029.85    0.320    36.34
2030.85    0.322    38.31
2031.85    0.323    40.27
2032.85    0.323    42.21
2033.85    0.323    44.16
2034.85    0.323    46.10
2035.85    0.322    48.05
2036.85    0.320    50.03
2037.85    0.318    52.02
2038.85    0.315    54.05
2039.85    0.311    56.12
2040.85    0.307    58.24
2041.85    0.303    60.43
2042.85    0.297    62.68
2043.85    0.292    65.03
2044.85    0.285    67.47
2045.85    0.278    70.03
2046.85    0.271    72.72
2047.85    0.264    75.56
2048.85    0.256    78.58
2049.85    0.248    81.79
2050.85    0.239    85.22
2051.85    0.231    88.89
2052.85    0.223    92.83
2053.85    0.215    97.06
2054.85    0.208   101.60
2055.85    0.201   106.46
2056.85    0.195   111.63
2057.85    0.190   117.11
2058.85    0.186   122.84
2059.85    0.184   128.78
2060.85    0.182   134.85
2061.85    0.183   140.96
2062.85    0.184   147.01
2063.85    0.187   152.93
2064.85    0.191   158.62
2065.85    0.196   164.04
2066.85    0.203   169.15
2067.85    0.210   173.94
2068.85    0.218   178.39
2069.85    0.226   182.52
2070.85    0.235   186.35
2071.85    0.244   189.91
2072.85    0.253   193.20
2073.85    0.262   196.27
2074.85    0.271   199.13
2075.85    0.280   201.80
2076.85    0.289   204.30
2077.85    0.298   206.66
2078.85    0.306   208.89
2079.85    0.314   211.00
2080.85    0.322   213.01
2081.85    0.329   214.93
2082.85    0.336   216.76
2083.85    0.343   218.53
2084.85    0.348   220.23
2085.85    0.354   221.88
2086.85    0.359   223.47
2087.85    0.364   225.03
2088.85    0.368   226.55
2089.85    0.371   228.04
2090.85    0.375   229.50

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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 17:26:35