Double Star Calculator - Orbit

Orbital Elements for RST3844

WDS:	RST3844	WDS ID/Discoverer
P:	121.850	Orbital period (years)
a:	0.255	Semi-major axis (arcseconds)
i:	117.6	Inclination (degrees)
Ω:	264.5	Longitude of ascending node (degrees)
T:	2010.940	Epoch of periastron passage (year)
e:	0.432	Eccentricity
ω:	19.4	Longitude of periastron (degrees)
Start-Year:	1964.075	Year
End-Year:	2085.925	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST3844
Position:	133410.74-162320.2	Epoch-2000 right ascension and declination
WDS-ID:	13342-1623	WDS designation
Discoverer Code:	RST3844	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	117968	HD catalog number
Hipparcos number:	66203	Hipparcos catalog number
V1:	9.5	Magnitude of the primary
V2:	9.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	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 RST3844

WDS 6th Orbit including measures of RST3844

-- 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 RST3844

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.128   129.98
--------------------------
1964.08    0.294    64.50
1965.08    0.288    63.55
1966.08    0.282    62.56
1967.08    0.276    61.53
1968.08    0.269    60.45
1969.08    0.263    59.32
1970.08    0.256    58.12
1971.08    0.249    56.87
1972.08    0.242    55.54
1973.08    0.235    54.13
1974.08    0.227    52.62
1975.08    0.220    51.02
1976.08    0.212    49.30
1977.08    0.205    47.45
1978.08    0.197    45.46
1979.08    0.189    43.30
1980.08    0.181    40.95
1981.08    0.173    38.39
1982.08    0.165    35.59
1983.08    0.158    32.52
1984.08    0.150    29.14
1985.08    0.143    25.41
1986.08    0.137    21.31
1987.08    0.130    16.80
1988.08    0.125    11.85
1989.08    0.120     6.46
1990.08    0.115     0.64
1991.08    0.112   354.43
1992.08    0.110   347.91
1993.08    0.109   341.19
1994.08    0.109   334.41
1995.08    0.110   327.69
1996.08    0.112   321.17
1997.08    0.115   314.94
1998.08    0.119   309.06
1999.08    0.123   303.56
2000.08    0.127   298.43
2001.08    0.132   293.66
2002.08    0.136   289.20
2003.08    0.140   285.01
2004.08    0.144   281.04
2005.08    0.147   277.24
2006.08    0.148   273.55
2007.08    0.149   269.93
2008.08    0.148   266.30
2009.08    0.146   262.59
2010.08    0.143   258.75
2011.08    0.138   254.67
2012.08    0.132   250.24
2013.08    0.124   245.34
2014.08    0.117   239.81
2015.08    0.108   233.45
2016.08    0.100   226.07
2017.08    0.093   217.49
2018.08    0.087   207.62
2019.08    0.084   196.62
2020.08    0.083   184.97
2021.08    0.084   173.39
2022.08    0.089   162.59
2023.08    0.095   153.03
2024.08    0.103   144.84
2025.08    0.113   137.94
2026.08    0.123   132.15
2027.08    0.134   127.27
2028.08    0.145   123.12
2029.08    0.156   119.57
2030.08    0.167   116.49
2031.08    0.178   113.78
2032.08    0.189   111.39
2033.08    0.199   109.26
2034.08    0.209   107.34
2035.08    0.219   105.59
2036.08    0.229   103.99
2037.08    0.238   102.52
2038.08    0.247   101.16
2039.08    0.256    99.89
2040.08    0.264    98.70
2041.08    0.272    97.59
2042.08    0.279    96.53
2043.08    0.286    95.53
2044.08    0.293    94.57
2045.08    0.300    93.66
2046.08    0.306    92.78
2047.08    0.311    91.94
2048.07    0.317    91.12
2049.07    0.322    90.33
2050.07    0.326    89.57
2051.07    0.331    88.83
2052.07    0.335    88.10
2053.07    0.338    87.39
2054.07    0.341    86.70
2055.07    0.344    86.01
2056.07    0.347    85.34
2057.07    0.349    84.68
2058.07    0.351    84.03
2059.07    0.353    83.38
2060.07    0.355    82.74
2061.07    0.356    82.10
2062.07    0.356    81.47
2063.07    0.357    80.84
2064.07    0.357    80.21
2065.07    0.357    79.58
2066.07    0.357    78.95
2067.07    0.356    78.32
2068.07    0.355    77.68
2069.07    0.354    77.05
2070.07    0.352    76.40
2071.07    0.351    75.75
2072.07    0.349    75.10
2073.07    0.346    74.43
2074.07    0.344    73.76
2075.07    0.341    73.07
2076.07    0.338    72.37
2077.07    0.334    71.66
2078.07    0.331    70.93
2079.07    0.327    70.19
2080.07    0.323    69.43
2081.07    0.318    68.65
2082.07    0.314    67.85
2083.07    0.309    67.02
2084.07    0.304    66.16
2085.07    0.298    65.28

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 16:57:39