Double Star Calculator - Orbit

Orbital Elements for MLR430

WDS:	MLR430	WDS ID/Discoverer
P:	127.800	Orbital period (years)
a:	0.258	Semi-major axis (arcseconds)
i:	54.0	Inclination (degrees)
Ω:	162.8	Longitude of ascending node (degrees)
T:	2022.400	Epoch of periastron passage (year)
e:	0.677	Eccentricity
ω:	258.8	Longitude of periastron (degrees)
Start-Year:	1961.1	Year
End-Year:	2088.9	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MLR430
Position:	164940.30+581608.7	Epoch-2000 right ascension and declination
WDS-ID:	16497+5816	WDS designation
Discoverer Code:	MLR430	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	238614	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.2	Magnitude of the primary
V2:	10.5	Magnitude of the secondary
Equinox:		Equinox
Date:	2022	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Lin2022b	Reference

Double Star Orbit for MLR430

WDS 6th Orbit including measures of MLR430

-- 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 MLR430

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.098   140.83
--------------------------
1961.10    0.260   237.26
1962.10    0.259   238.47
1963.10    0.258   239.68
1964.10    0.257   240.91
1965.10    0.255   242.15
1966.10    0.254   243.40
1967.10    0.253   244.66
1968.10    0.251   245.94
1969.10    0.250   247.23
1970.10    0.249   248.53
1971.10    0.247   249.85
1972.10    0.246   251.18
1973.10    0.245   252.53
1974.10    0.243   253.89
1975.10    0.242   255.26
1976.10    0.241   256.65
1977.10    0.239   258.06
1978.10    0.238   259.48
1979.10    0.237   260.92
1980.10    0.235   262.38
1981.10    0.234   263.85
1982.10    0.233   265.34
1983.10    0.231   266.84
1984.10    0.230   268.37
1985.10    0.229   269.91
1986.10    0.227   271.47
1987.10    0.226   273.05
1988.10    0.224   274.65
1989.10    0.223   276.27
1990.10    0.222   277.91
1991.10    0.220   279.58
1992.10    0.219   281.26
1993.10    0.217   282.97
1994.10    0.216   284.70
1995.10    0.214   286.46
1996.10    0.212   288.25
1997.10    0.211   290.06
1998.10    0.209   291.91
1999.10    0.207   293.78
2000.10    0.205   295.70
2001.10    0.203   297.65
2002.10    0.201   299.64
2003.10    0.198   301.68
2004.10    0.196   303.77
2005.10    0.193   305.91
2006.10    0.190   308.13
2007.10    0.187   310.41
2008.10    0.183   312.78
2009.10    0.179   315.25
2010.10    0.175   317.83
2011.10    0.170   320.56
2012.10    0.165   323.45
2013.10    0.158   326.56
2014.10    0.151   329.93
2015.10    0.143   333.66
2016.10    0.134   337.86
2017.10    0.124   342.74
2018.10    0.111   348.62
2019.10    0.097   356.08
2020.10    0.082     6.27
2021.10    0.066    21.40
2022.10    0.053    45.10
2023.10    0.050    77.22
2024.10    0.058   106.13
2025.10    0.074   125.15
2026.10    0.091   137.20
2027.10    0.108   145.42
2028.10    0.124   151.47
2029.10    0.138   156.21
2030.10    0.151   160.09
2031.10    0.163   163.37
2032.10    0.174   166.23
2033.10    0.183   168.78
2034.10    0.192   171.07
2035.10    0.200   173.18
2036.10    0.208   175.13
2037.10    0.215   176.94
2038.10    0.221   178.66
2039.10    0.226   180.28
2040.10    0.232   181.83
2041.10    0.236   183.31
2042.10    0.241   184.73
2043.10    0.245   186.11
2044.10    0.249   187.44
2045.10    0.252   188.74
2046.10    0.255   190.00
2047.10    0.258   191.23
2048.10    0.260   192.44
2049.10    0.263   193.63
2050.10    0.265   194.79
2051.10    0.267   195.94
2052.10    0.269   197.07
2053.10    0.270   198.19
2054.10    0.272   199.29
2055.10    0.273   200.39
2056.10    0.274   201.47
2057.10    0.275   202.55
2058.10    0.276   203.62
2059.10    0.276   204.69
2060.10    0.277   205.75
2061.10    0.277   206.80
2062.10    0.278   207.86
2063.10    0.278   208.91
2064.10    0.278   209.96
2065.10    0.278   211.01
2066.10    0.278   212.06
2067.10    0.278   213.11
2068.10    0.277   214.17
2069.10    0.277   215.22
2070.10    0.277   216.28
2071.10    0.276   217.34
2072.10    0.276   218.40
2073.10    0.275   219.47
2074.10    0.275   220.54
2075.10    0.274   221.62
2076.10    0.273   222.71
2077.10    0.272   223.80
2078.10    0.272   224.89
2079.10    0.271   226.00
2080.10    0.270   227.11
2081.10    0.269   228.23
2082.10    0.268   229.35
2083.10    0.267   230.49
2084.10    0.266   231.63
2085.10    0.265   232.79
2086.10    0.263   233.95
2087.10    0.262   235.12
2088.10    0.261   236.31

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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.

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Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 17:31:10