Double Star Calculator - Orbit

Orbital Elements for I1284

WDS:	I1284	WDS ID/Discoverer
P:	240.000	Orbital period (years)
a:	0.301	Semi-major axis (arcseconds)
i:	79.6	Inclination (degrees)
Ω:	94.3	Longitude of ascending node (degrees)
T:	1955.760	Epoch of periastron passage (year)
e:	0.8	Eccentricity
ω:	122.9	Longitude of periastron (degrees)
Start-Year:	1905.0	Year
End-Year:	2145.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I1284
Position:	160450.75-404415.5	Epoch-2000 right ascension and declination
WDS-ID:	16048-4044	WDS designation
Discoverer Code:	I1284	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	143941	HD catalog number
Hipparcos number:	78765	Hipparcos catalog number
V1:	8.5	Magnitude of the primary
V2:	8.8	Magnitude of the secondary
Equinox:		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:	Tok2021f	Reference

Double Star Orbit for I1284

WDS 6th Orbit including measures of I1284

-- 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 I1284

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.169    65.28
--------------------------
1905.00    0.343    87.36
1906.00    0.341    87.48
1907.00    0.339    87.61
1908.00    0.337    87.74
1909.00    0.336    87.87
1910.00    0.334    88.00
1911.00    0.331    88.13
1912.00    0.329    88.27
1913.00    0.327    88.40
1914.00    0.324    88.54
1915.00    0.322    88.68
1916.00    0.319    88.83
1917.00    0.316    88.97
1918.00    0.313    89.12
1919.00    0.310    89.27
1920.00    0.307    89.43
1921.00    0.304    89.59
1922.00    0.300    89.75
1923.00    0.296    89.91
1924.00    0.293    90.08
1925.00    0.289    90.26
1926.00    0.284    90.44
1927.00    0.280    90.62
1928.00    0.275    90.81
1929.00    0.271    91.01
1930.00    0.266    91.21
1931.00    0.260    91.43
1932.00    0.255    91.65
1933.00    0.249    91.88
1934.00    0.243    92.12
1935.00    0.237    92.38
1936.00    0.230    92.65
1937.00    0.223    92.93
1938.00    0.216    93.24
1939.00    0.208    93.57
1940.00    0.200    93.92
1941.00    0.192    94.30
1942.00    0.182    94.72
1943.00    0.173    95.19
1944.00    0.163    95.71
1945.00    0.152    96.31
1946.00    0.140    97.00
1947.00    0.128    97.83
1948.00    0.114    98.84
1949.00    0.100   100.13
1950.00    0.084   101.89
1951.00    0.067   104.51
1952.00    0.048   109.05
1953.00    0.029   119.43
1954.00    0.013   162.00
1955.00    0.020   242.14
1956.00    0.038   261.42
1957.00    0.055   268.32
1958.00    0.068   272.21
1959.00    0.078   274.96
1960.00    0.084   277.19
1961.00    0.089   279.15
1962.00    0.092   280.95
1963.00    0.093   282.68
1964.00    0.094   284.36
1965.00    0.093   286.05
1966.00    0.092   287.75
1967.00    0.091   289.50
1968.00    0.090   291.29
1969.00    0.088   293.16
1970.00    0.086   295.12
1971.00    0.084   297.17
1972.00    0.081   299.33
1973.00    0.079   301.62
1974.00    0.077   304.05
1975.00    0.074   306.64
1976.00    0.072   309.39
1977.00    0.070   312.31
1978.00    0.068   315.43
1979.00    0.066   318.74
1980.00    0.064   322.25
1981.00    0.062   325.95
1982.00    0.061   329.83
1983.00    0.060   333.88
1984.00    0.059   338.08
1985.00    0.058   342.39
1986.00    0.058   346.77
1987.00    0.058   351.18
1988.00    0.058   355.56
1989.00    0.059   359.89
1990.00    0.060     4.11
1991.00    0.061     8.18
1992.00    0.062    12.09
1993.00    0.064    15.81
1994.00    0.066    19.33
1995.00    0.068    22.64
1996.00    0.070    25.74
1997.00    0.072    28.64
1998.00    0.075    31.34
1999.00    0.078    33.86
2000.00    0.081    36.21
2001.00    0.084    38.39
2002.00    0.087    40.43
2003.00    0.090    42.32
2004.00    0.093    44.09
2005.00    0.096    45.74
2006.00    0.099    47.29
2007.00    0.103    48.73
2008.00    0.106    50.08
2009.00    0.109    51.36
2010.00    0.113    52.55
2011.00    0.116    53.68
2012.00    0.120    54.74
2013.00    0.123    55.74
2014.00    0.126    56.69
2015.00    0.130    57.58
2016.00    0.133    58.43
2017.00    0.137    59.24
2018.00    0.140    60.01
2019.00    0.144    60.74
2020.00    0.147    61.44
2021.00    0.150    62.10
2022.00    0.154    62.74
2023.00    0.157    63.35
2024.00    0.161    63.93
2025.00    0.164    64.49
2026.00    0.167    65.02
2027.00    0.171    65.54
2028.00    0.174    66.03
2029.00    0.177    66.51
2030.00    0.181    66.97
2031.00    0.184    67.41
2032.00    0.187    67.84
2033.00    0.191    68.25
2034.00    0.194    68.65
2035.00    0.197    69.04
2036.00    0.200    69.41
2037.00    0.203    69.77
2038.00    0.206    70.12
2039.00    0.210    70.46
2040.00    0.213    70.79
2041.00    0.216    71.12
2042.00    0.219    71.43
2043.00    0.222    71.73
2044.00    0.225    72.03
2045.00    0.228    72.31
2046.00    0.231    72.59
2047.00    0.234    72.87
2048.00    0.237    73.13
2049.00    0.239    73.39
2050.00    0.242    73.65
2051.00    0.245    73.89
2052.00    0.248    74.14
2053.00    0.251    74.37
2054.00    0.253    74.61
2055.00    0.256    74.83
2056.00    0.259    75.06
2057.00    0.261    75.27
2058.00    0.264    75.49
2059.00    0.267    75.70
2060.00    0.269    75.90
2061.00    0.272    76.10
2062.00    0.274    76.30
2063.00    0.277    76.49
2064.00    0.279    76.68
2065.00    0.282    76.87
2066.00    0.284    77.06
2067.00    0.286    77.24
2068.00    0.289    77.41
2069.00    0.291    77.59
2070.00    0.293    77.76
2071.00    0.295    77.93
2072.00    0.298    78.10
2073.00    0.300    78.27
2074.00    0.302    78.43
2075.00    0.304    78.59
2076.00    0.306    78.75
2077.00    0.308    78.90
2078.00    0.310    79.06
2079.00    0.312    79.21
2080.00    0.314    79.36
2081.00    0.316    79.51
2082.00    0.318    79.65
2083.00    0.320    79.80
2084.00    0.321    79.94
2085.00    0.323    80.08
2086.00    0.325    80.22
2087.00    0.326    80.36
2088.00    0.328    80.50
2089.00    0.330    80.64
2090.00    0.331    80.77
2091.00    0.333    80.91
2092.00    0.334    81.04
2093.00    0.336    81.17
2094.00    0.337    81.30
2095.00    0.338    81.43
2096.00    0.340    81.56
2097.00    0.341    81.68
2098.00    0.342    81.81
2099.00    0.344    81.93
2100.00    0.345    82.06
2101.00    0.346    82.18
2102.00    0.347    82.30
2103.00    0.348    82.43
2104.00    0.349    82.55
2105.00    0.350    82.67
2106.00    0.351    82.79
2107.00    0.352    82.91
2108.00    0.352    83.03
2109.00    0.353    83.14
2110.00    0.354    83.26
2111.00    0.355    83.38
2112.00    0.355    83.50
2113.00    0.356    83.61
2114.00    0.356    83.73
2115.00    0.357    83.84
2116.00    0.357    83.96
2117.00    0.358    84.08
2118.00    0.358    84.19
2119.00    0.358    84.31
2120.00    0.358    84.42
2121.00    0.358    84.53
2122.00    0.359    84.65
2123.00    0.359    84.76
2124.00    0.359    84.88
2125.00    0.359    84.99
2126.00    0.358    85.11
2127.00    0.358    85.22
2128.00    0.358    85.34
2129.00    0.358    85.45
2130.00    0.357    85.57
2131.00    0.357    85.68
2132.00    0.356    85.80
2133.00    0.356    85.91
2134.00    0.355    86.03
2135.00    0.354    86.15
2136.00    0.353    86.27
2137.00    0.353    86.38
2138.00    0.352    86.50
2139.00    0.351    86.62
2140.00    0.349    86.74
2141.00    0.348    86.86
2142.00    0.347    86.99
2143.00    0.346    87.11
2144.00    0.344    87.23

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 17:22:07