Double Star Calculator - Orbit

Orbital Elements for HDS635

WDS:	HDS635	WDS ID/Discoverer
P:	150.000	Orbital period (years)
a:	0.483	Semi-major axis (arcseconds)
i:	126.0	Inclination (degrees)
Ω:	136.2	Longitude of ascending node (degrees)
T:	1997.182	Epoch of periastron passage (year)
e:	0.829	Eccentricity
ω:	84.7	Longitude of periastron (degrees)
Start-Year:	1950.0	Year
End-Year:	2100.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS635
Position:	045518.64-162504.3	Epoch-2000 right ascension and declination
WDS-ID:	04553-1625	WDS designation
Discoverer Code:	HDS635	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	22881	Hipparcos catalog number
V1:	5.93	Magnitude of the primary
V2:	9.03	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	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:	Tok2023a	Reference

Double Star Orbit for HDS635

WDS 6th Orbit including measures of HDS635

-- 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 HDS635

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.450   268.14
--------------------------
1950.00    0.476   215.03
1951.00    0.473   214.21
1952.00    0.470   213.38
1953.00    0.467   212.54
1954.00    0.464   211.69
1955.00    0.461   210.83
1956.00    0.457   209.96
1957.00    0.454   209.07
1958.00    0.450   208.17
1959.00    0.447   207.26
1960.00    0.443   206.33
1961.00    0.439   205.38
1962.00    0.435   204.42
1963.00    0.431   203.44
1964.00    0.427   202.44
1965.00    0.422   201.42
1966.00    0.418   200.38
1967.00    0.413   199.31
1968.00    0.409   198.22
1969.00    0.404   197.10
1970.00    0.399   195.96
1971.00    0.393   194.79
1972.00    0.388   193.58
1973.00    0.382   192.34
1974.00    0.376   191.06
1975.00    0.370   189.74
1976.00    0.364   188.38
1977.00    0.358   186.96
1978.00    0.351   185.50
1979.00    0.344   183.97
1980.00    0.336   182.38
1981.00    0.329   180.72
1982.00    0.320   178.97
1983.00    0.312   177.13
1984.00    0.303   175.18
1985.00    0.293   173.11
1986.00    0.283   170.89
1987.00    0.272   168.50
1988.00    0.260   165.90
1989.00    0.247   163.03
1990.00    0.233   159.83
1991.00    0.217   156.18
1992.00    0.199   151.92
1993.00    0.178   146.72
1994.00    0.153   139.97
1995.00    0.123   130.23
1996.00    0.086   112.85
1997.00    0.051    68.61
1998.00    0.064     1.62
1999.00    0.105   334.11
2000.00    0.141   321.76
2001.00    0.172   314.25
2002.00    0.199   308.89
2003.00    0.221   304.71
2004.00    0.242   301.28
2005.00    0.260   298.35
2006.00    0.276   295.78
2007.00    0.291   293.49
2008.00    0.304   291.41
2009.00    0.317   289.50
2010.00    0.329   287.74
2011.00    0.340   286.09
2012.00    0.350   284.55
2013.00    0.360   283.09
2014.00    0.369   281.70
2015.00    0.378   280.38
2016.00    0.386   279.12
2017.00    0.393   277.90
2018.00    0.401   276.74
2019.00    0.408   275.61
2020.00    0.414   274.52
2021.00    0.421   273.46
2022.00    0.427   272.44
2023.00    0.432   271.44
2024.00    0.438   270.47
2025.00    0.443   269.52
2026.00    0.448   268.59
2027.00    0.453   267.69
2028.00    0.457   266.80
2029.00    0.462   265.93
2030.00    0.466   265.07
2031.00    0.470   264.23
2032.00    0.474   263.40
2033.00    0.477   262.59
2034.00    0.481   261.79
2035.00    0.484   260.99
2036.00    0.487   260.21
2037.00    0.490   259.44
2038.00    0.493   258.68
2039.00    0.495   257.93
2040.00    0.498   257.18
2041.00    0.500   256.44
2042.00    0.503   255.71
2043.00    0.505   254.99
2044.00    0.507   254.27
2045.00    0.509   253.55
2046.00    0.511   252.84
2047.00    0.512   252.14
2048.00    0.514   251.44
2049.00    0.515   250.75
2050.00    0.517   250.06
2051.00    0.518   249.37
2052.00    0.519   248.68
2053.00    0.520   248.00
2054.00    0.521   247.32
2055.00    0.522   246.65
2056.00    0.523   245.97
2057.00    0.524   245.30
2058.00    0.524   244.63
2059.00    0.525   243.96
2060.00    0.525   243.29
2061.00    0.525   242.63
2062.00    0.526   241.96
2063.00    0.526   241.30
2064.00    0.526   240.63
2065.00    0.526   239.96
2066.00    0.526   239.30
2067.00    0.526   238.63
2068.00    0.525   237.97
2069.00    0.525   237.30
2070.00    0.525   236.63
2071.00    0.524   235.96
2072.00    0.524   235.29
2073.00    0.523   234.62
2074.00    0.522   233.94
2075.00    0.521   233.27
2076.00    0.520   232.59
2077.00    0.520   231.91
2078.00    0.518   231.23
2079.00    0.517   230.54
2080.00    0.516   229.85
2081.00    0.515   229.16
2082.00    0.514   228.46
2083.00    0.512   227.76
2084.00    0.511   227.06
2085.00    0.509   226.35
2086.00    0.507   225.64
2087.00    0.506   224.92
2088.00    0.504   224.20
2089.00    0.502   223.47
2090.00    0.500   222.74
2091.00    0.498   222.00
2092.00    0.496   221.25
2093.00    0.494   220.50
2094.00    0.491   219.74
2095.00    0.489   218.98
2096.00    0.487   218.20
2097.00    0.484   217.42
2098.00    0.481   216.63
2099.00    0.479   215.83

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 15:31:51