Double Star Calculator - Orbit

Orbital Elements for I10AB
WDS: I10AB WDS ID/Discoverer
P: 146.970 Orbital period (years)
a: 2.002 Semi-major axis (arcseconds)
i: 105.6 Inclination (degrees)
Ω: 344.7 Longitude of ascending node (degrees)
T: 2000.780 Epoch of periastron passage (year)
e: 0.482 Eccentricity
ω: 8.5 Longitude of periastron (degrees)
Start-Year: 1951.515 Year
End-Year: 2098.485 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I10AB
Position: 084442.23-544231.8 Epoch-2000 right ascension and declination
WDS-ID: 08447-5443 WDS designation
Discoverer Code: I10AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 74956 HD catalog number
Hipparcos number: 42913 Hipparcos catalog number
V1: 1.99 Magnitude of the primary
V2: 5.57 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Msn2011b Reference

Double Star Orbit for I10AB



WDS 6th Orbit including measures of I10AB

-- 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 I10AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.307   183.79
--------------------------
1951.52    2.310   154.60
1952.52    2.265   154.16
1953.52    2.218   153.69
1954.52    2.170   153.21
1955.52    2.120   152.71
1956.52    2.068   152.18
1957.52    2.015   151.63
1958.52    1.961   151.04
1959.52    1.905   150.42
1960.52    1.847   149.77
1961.52    1.788   149.07
1962.52    1.728   148.32
1963.52    1.666   147.52
1964.52    1.603   146.65
1965.52    1.539   145.71
1966.52    1.473   144.69
1967.52    1.407   143.58
1968.52    1.339   142.35
1969.52    1.270   140.99
1970.52    1.200   139.47
1971.52    1.129   137.76
1972.52    1.058   135.83
1973.52    0.987   133.61
1974.52    0.916   131.05
1975.52    0.845   128.06
1976.52    0.775   124.53
1977.52    0.708   120.31
1978.52    0.643   115.22
1979.52    0.584   109.05
1980.52    0.531   101.56
1981.52    0.487    92.58
1982.52    0.457    82.14
1983.52    0.442    70.60
1984.52    0.444    58.72
1985.52    0.463    47.40
1986.52    0.497    37.29
1987.52    0.541    28.66
1988.52    0.594    21.45
1989.52    0.651    15.46
1990.52    0.710    10.46
1991.52    0.769     6.22
1992.52    0.827     2.59
1993.52    0.880   359.41
1994.52    0.929   356.59
1995.52    0.970   354.03
1996.52    1.004   351.65
1997.52    1.027   349.42
1998.52    1.040   347.26
1999.52    1.042   345.13
2000.52    1.031   342.98
2001.52    1.009   340.76
2002.52    0.974   338.41
2003.52    0.930   335.86
2004.52    0.875   333.02
2005.52    0.814   329.78
2006.52    0.746   325.97
2007.52    0.675   321.38
2008.52    0.603   315.69
2009.52    0.533   308.48
2010.52    0.471   299.24
2011.52    0.421   287.49
2012.52    0.390   273.25
2013.52    0.384   257.61
2014.52    0.404   242.55
2015.52    0.448   229.67
2016.52    0.507   219.43
2017.52    0.577   211.50
2018.52    0.654   205.37
2019.52    0.734   200.55
2020.52    0.817   196.69
2021.52    0.900   193.55
2022.52    0.984   190.94
2023.52    1.067   188.73
2024.52    1.148   186.84
2025.52    1.229   185.21
2026.52    1.308   183.77
2027.52    1.385   182.49
2028.52    1.461   181.35
2029.52    1.535   180.32
2030.52    1.607   179.38
2031.52    1.677   178.52
2032.52    1.745   177.73
2033.52    1.811   177.00
2034.52    1.876   176.32
2035.52    1.938   175.68
2036.52    1.998   175.08
2037.52    2.057   174.52
2038.52    2.113   173.99
2039.52    2.167   173.48
2040.52    2.220   173.00
2041.52    2.270   172.54
2042.52    2.319   172.10
2043.52    2.365   171.68
2044.52    2.410   171.28
2045.52    2.453   170.89
2046.52    2.494   170.51
2047.52    2.533   170.14
2048.52    2.571   169.79
2049.52    2.606   169.44
2050.52    2.640   169.11
2051.52    2.672   168.78
2052.52    2.702   168.46
2053.52    2.730   168.14
2054.52    2.757   167.84
2055.52    2.781   167.53
2056.52    2.805   167.24
2057.52    2.826   166.95
2058.52    2.846   166.66
2059.52    2.864   166.37
2060.52    2.880   166.09
2061.52    2.894   165.82
2062.52    2.907   165.54
2063.52    2.919   165.27
2064.52    2.928   165.00
2065.52    2.936   164.73
2066.52    2.942   164.46
2067.52    2.947   164.20
2068.52    2.950   163.93
2069.52    2.952   163.66
2070.52    2.952   163.40
2071.52    2.950   163.13
2072.52    2.946   162.87
2073.52    2.941   162.60
2074.52    2.935   162.33
2075.52    2.927   162.06
2076.52    2.917   161.79
2077.52    2.906   161.52
2078.52    2.893   161.24
2079.52    2.879   160.97
2080.52    2.863   160.68
2081.52    2.845   160.40
2082.52    2.826   160.11
2083.52    2.805   159.82
2084.52    2.783   159.53
2085.52    2.759   159.22
2086.52    2.734   158.92
2087.52    2.707   158.60
2088.52    2.679   158.29
2089.52    2.649   157.96
2090.52    2.617   157.63
2091.52    2.584   157.28
2092.52    2.549   156.93
2093.52    2.513   156.57
2094.52    2.475   156.20
2095.52    2.436   155.82
2096.52    2.395   155.42
2097.52    2.353   155.01






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 16:10:26



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