Double Star Calculator - Orbit

Orbital Elements for I724

WDS:	I724	WDS ID/Discoverer
P:	180.000	Orbital period (years)
a:	0.408	Semi-major axis (arcseconds)
i:	93.7	Inclination (degrees)
Ω:	203.9	Longitude of ascending node (degrees)
T:	1978.860	Epoch of periastron passage (year)
e:	0.79	Eccentricity
ω:	121.6	Longitude of periastron (degrees)
Start-Year:	1935.0	Year
End-Year:	2115.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I724
Position:	041847.63-340716.7	Epoch-2000 right ascension and declination
WDS-ID:	04188-3407	WDS designation
Discoverer Code:	I724	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27470	HD catalog number
Hipparcos number:	20116	Hipparcos catalog number
V1:	8.3	Magnitude of the primary
V2:	9.3	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	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:	Tok2021f	Reference

Double Star Orbit for I724

WDS 6th Orbit including measures of I724

-- 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 I724

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.148   219.01
--------------------------
1935.00    0.467   206.80
1936.00    0.465   206.74
1937.00    0.463   206.68
1938.00    0.462   206.62
1939.00    0.460   206.55
1940.00    0.457   206.49
1941.00    0.455   206.43
1942.00    0.452   206.36
1943.00    0.450   206.30
1944.00    0.446   206.23
1945.00    0.443   206.17
1946.00    0.439   206.10
1947.00    0.435   206.03
1948.00    0.431   205.96
1949.00    0.427   205.89
1950.00    0.422   205.82
1951.00    0.417   205.74
1952.00    0.411   205.66
1953.00    0.406   205.58
1954.00    0.399   205.50
1955.00    0.393   205.42
1956.00    0.386   205.33
1957.00    0.378   205.24
1958.00    0.370   205.15
1959.00    0.362   205.05
1960.00    0.353   204.95
1961.00    0.343   204.84
1962.00    0.333   204.72
1963.00    0.322   204.60
1964.00    0.310   204.47
1965.00    0.298   204.33
1966.00    0.284   204.17
1967.00    0.270   204.00
1968.00    0.254   203.81
1969.00    0.237   203.59
1970.00    0.219   203.33
1971.00    0.199   203.03
1972.00    0.177   202.66
1973.00    0.153   202.17
1974.00    0.126   201.49
1975.00    0.096   200.41
1976.00    0.063   198.24
1977.00    0.027   190.42
1978.00    0.014    47.84
1979.00    0.050    29.07
1980.00    0.081    25.87
1981.00    0.103    24.30
1982.00    0.117    23.22
1983.00    0.126    22.34
1984.00    0.131    21.54
1985.00    0.133    20.79
1986.00    0.133    20.05
1987.00    0.131    19.29
1988.00    0.128    18.51
1989.00    0.124    17.68
1990.00    0.120    16.80
1991.00    0.115    15.85
1992.00    0.109    14.80
1993.00    0.104    13.64
1994.00    0.098    12.33
1995.00    0.091    10.85
1996.00    0.085     9.15
1997.00    0.078     7.17
1998.00    0.072     4.83
1999.00    0.065     2.02
2000.00    0.059   358.60
2001.00    0.053   354.36
2002.00    0.047   349.01
2003.00    0.041   342.19
2004.00    0.037   333.46
2005.00    0.033   322.47
2006.00    0.031   309.31
2007.00    0.030   294.95
2008.00    0.032   281.02
2009.00    0.035   268.91
2010.00    0.039   259.10
2011.00    0.044   251.40
2012.00    0.050   245.40
2013.00    0.056   240.68
2014.00    0.062   236.91
2015.00    0.069   233.85
2016.00    0.076   231.34
2017.00    0.083   229.23
2018.00    0.089   227.45
2019.00    0.096   225.93
2020.00    0.103   224.60
2021.00    0.110   223.45
2022.00    0.117   222.43
2023.00    0.124   221.52
2024.00    0.131   220.71
2025.00    0.138   219.98
2026.00    0.145   219.32
2027.00    0.151   218.72
2028.00    0.158   218.17
2029.00    0.165   217.67
2030.00    0.172   217.20
2031.00    0.178   216.77
2032.00    0.185   216.37
2033.00    0.191   216.00
2034.00    0.198   215.65
2035.00    0.204   215.32
2036.00    0.211   215.02
2037.00    0.217   214.73
2038.00    0.223   214.46
2039.00    0.229   214.20
2040.00    0.236   213.95
2041.00    0.242   213.72
2042.00    0.248   213.50
2043.00    0.254   213.29
2044.00    0.260   213.09
2045.00    0.265   212.90
2046.00    0.271   212.72
2047.00    0.277   212.54
2048.00    0.283   212.38
2049.00    0.288   212.21
2050.00    0.294   212.06
2051.00    0.299   211.91
2052.00    0.305   211.76
2053.00    0.310   211.62
2054.00    0.315   211.49
2055.00    0.320   211.36
2056.00    0.325   211.23
2057.00    0.331   211.11
2058.00    0.336   210.99
2059.00    0.340   210.88
2060.00    0.345   210.76
2061.00    0.350   210.66
2062.00    0.355   210.55
2063.00    0.359   210.45
2064.00    0.364   210.35
2065.00    0.368   210.25
2066.00    0.373   210.15
2067.00    0.377   210.06
2068.00    0.381   209.97
2069.00    0.385   209.88
2070.00    0.389   209.79
2071.00    0.393   209.70
2072.00    0.397   209.62
2073.00    0.401   209.54
2074.00    0.405   209.45
2075.00    0.408   209.37
2076.00    0.412   209.30
2077.00    0.416   209.22
2078.00    0.419   209.14
2079.00    0.422   209.07
2080.00    0.425   209.00
2081.00    0.428   208.92
2082.00    0.431   208.85
2083.00    0.434   208.78
2084.00    0.437   208.71
2085.00    0.440   208.64
2086.00    0.443   208.58
2087.00    0.445   208.51
2088.00    0.448   208.44
2089.00    0.450   208.38
2090.00    0.452   208.31
2091.00    0.454   208.25
2092.00    0.456   208.19
2093.00    0.458   208.12
2094.00    0.460   208.06
2095.00    0.461   208.00
2096.00    0.463   207.94
2097.00    0.464   207.87
2098.00    0.466   207.81
2099.00    0.467   207.75
2100.00    0.468   207.69
2101.00    0.469   207.63
2102.00    0.470   207.57
2103.00    0.470   207.51
2104.00    0.471   207.45
2105.00    0.471   207.39
2106.00    0.471   207.34
2107.00    0.472   207.28
2108.00    0.471   207.22
2109.00    0.471   207.16
2110.00    0.471   207.10
2111.00    0.470   207.04
2112.00    0.470   206.98
2113.00    0.469   206.92
2114.00    0.468   206.86

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 15:21:01