Double Star Calculator - Orbit

Orbital Elements for I1477

WDS:	I1477	WDS ID/Discoverer
P:	115.400	Orbital period (years)
a:	0.435	Semi-major axis (arcseconds)
i:	65.6	Inclination (degrees)
Ω:	147.5	Longitude of ascending node (degrees)
T:	2011.580	Epoch of periastron passage (year)
e:	0.717	Eccentricity
ω:	297.3	Longitude of periastron (degrees)
Start-Year:	1967.3	Year
End-Year:	2082.7	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I1477
Position:	000019.10-441726.0	Epoch-2000 right ascension and declination
WDS-ID:	00003-4417	WDS designation
Discoverer Code:	I1477	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	224750	HD catalog number
Hipparcos number:	25	Hipparcos catalog number
V1:	6.80	Magnitude of the primary
V2:	7.56	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	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:	Tok2023a	Reference

Double Star Orbit for I1477

WDS 6th Orbit including measures of I1477

-- 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 I1477

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.213   198.33
--------------------------
1967.30    0.496   299.17
1968.30    0.499   299.85
1969.30    0.501   300.53
1970.30    0.504   301.21
1971.30    0.506   301.87
1972.30    0.507   302.54
1973.30    0.508   303.20
1974.30    0.509   303.85
1975.30    0.510   304.51
1976.30    0.510   305.16
1977.30    0.510   305.81
1978.30    0.510   306.47
1979.30    0.509   307.12
1980.30    0.508   307.78
1981.30    0.506   308.44
1982.30    0.504   309.11
1983.30    0.501   309.78
1984.30    0.498   310.46
1985.30    0.495   311.15
1986.30    0.491   311.85
1987.30    0.486   312.56
1988.30    0.481   313.29
1989.30    0.475   314.03
1990.30    0.468   314.80
1991.30    0.461   315.58
1992.30    0.453   316.40
1993.30    0.444   317.24
1994.30    0.434   318.13
1995.30    0.423   319.05
1996.30    0.412   320.02
1997.30    0.399   321.06
1998.30    0.384   322.17
1999.30    0.369   323.37
2000.30    0.351   324.68
2001.30    0.332   326.13
2002.30    0.311   327.77
2003.30    0.288   329.67
2004.30    0.263   331.91
2005.30    0.234   334.67
2006.30    0.202   338.25
2007.30    0.167   343.29
2008.30    0.127   351.26
2009.30    0.087     6.63
2010.30    0.056    43.60
2011.30    0.064    98.44
2012.30    0.098   126.12
2013.30    0.132   139.10
2014.30    0.158   147.18
2015.30    0.177   153.23
2016.30    0.189   158.29
2017.30    0.198   162.81
2018.30    0.204   167.01
2019.30    0.208   171.02
2020.30    0.210   174.91
2021.30    0.211   178.74
2022.30    0.212   182.53
2023.30    0.212   186.31
2024.30    0.213   190.07
2025.30    0.213   193.83
2026.30    0.213   197.58
2027.30    0.213   201.32
2028.30    0.214   205.04
2029.30    0.215   208.73
2030.30    0.217   212.38
2031.30    0.218   215.97
2032.30    0.221   219.50
2033.30    0.223   222.95
2034.30    0.226   226.31
2035.30    0.230   229.57
2036.30    0.234   232.74
2037.30    0.238   235.79
2038.30    0.243   238.74
2039.30    0.248   241.57
2040.30    0.253   244.28
2041.30    0.258   246.89
2042.30    0.264   249.38
2043.30    0.270   251.77
2044.30    0.276   254.05
2045.30    0.282   256.23
2046.30    0.289   258.32
2047.30    0.295   260.31
2048.30    0.302   262.22
2049.30    0.309   264.04
2050.30    0.316   265.78
2051.30    0.322   267.45
2052.30    0.329   269.05
2053.30    0.336   270.59
2054.30    0.343   272.06
2055.30    0.350   273.48
2056.30    0.357   274.84
2057.30    0.364   276.15
2058.30    0.370   277.41
2059.30    0.377   278.62
2060.30    0.384   279.80
2061.30    0.390   280.93
2062.30    0.397   282.03
2063.30    0.403   283.09
2064.30    0.409   284.12
2065.30    0.416   285.12
2066.30    0.422   286.09
2067.30    0.428   287.03
2068.30    0.433   287.95
2069.30    0.439   288.84
2070.30    0.444   289.72
2071.30    0.450   290.57
2072.30    0.455   291.40
2073.30    0.460   292.21
2074.30    0.464   293.01
2075.30    0.469   293.79
2076.30    0.473   294.55
2077.30    0.478   295.30
2078.30    0.482   296.04
2079.30    0.485   296.77
2080.30    0.489   297.49
2081.30    0.492   298.19
2082.30    0.495   298.89

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 14:33:44