Double Star Calculator - Orbit

Orbital Elements for A1515
WDS: A1515 WDS ID/Discoverer
P: 170.100 Orbital period (years)
a: 0.237 Semi-major axis (arcseconds)
i: 68.9 Inclination (degrees)
Ω: 111.6 Longitude of ascending node (degrees)
T: 2036.970 Epoch of periastron passage (year)
e: 0.053 Eccentricity
ω: 282.1 Longitude of periastron (degrees)
Start-Year: 1939.95 Year
End-Year: 2110.05 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A1515
Position: 010456.22+364923.3 Epoch-2000 right ascension and declination
WDS-ID: 01049+3649 WDS designation
Discoverer Code: A1515 Discover designation and components
ADS number: 883 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.7 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1999 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: Doc2009g Reference

Double Star Orbit for A1515



WDS 6th Orbit including measures of A1515

-- 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 A1515
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.093   349.98
--------------------------
1939.95    0.099   173.72
1940.95    0.096   178.18
1941.95    0.094   182.91
1942.95    0.092   187.87
1943.95    0.091   193.01
1944.95    0.090   198.27
1945.95    0.090   203.58
1946.95    0.090   208.85
1947.95    0.092   214.01
1948.95    0.094   219.00
1949.95    0.096   223.77
1950.95    0.099   228.27
1951.95    0.102   232.50
1952.95    0.106   236.43
1953.95    0.110   240.08
1954.95    0.115   243.46
1955.95    0.119   246.58
1956.95    0.124   249.46
1957.95    0.129   252.11
1958.95    0.134   254.57
1959.95    0.140   256.85
1960.95    0.145   258.96
1961.95    0.150   260.93
1962.95    0.155   262.76
1963.95    0.161   264.48
1964.95    0.166   266.08
1965.95    0.171   267.59
1966.95    0.176   269.02
1967.95    0.181   270.37
1968.95    0.185   271.64
1969.95    0.190   272.86
1970.95    0.194   274.02
1971.95    0.199   275.12
1972.95    0.203   276.18
1973.95    0.207   277.20
1974.95    0.211   278.18
1975.95    0.214   279.13
1976.95    0.217   280.05
1977.95    0.221   280.94
1978.95    0.224   281.81
1979.95    0.226   282.65
1980.95    0.229   283.48
1981.95    0.231   284.29
1982.95    0.233   285.08
1983.95    0.235   285.86
1984.95    0.236   286.64
1985.95    0.237   287.40
1986.95    0.238   288.16
1987.95    0.239   288.91
1988.95    0.239   289.65
1989.95    0.239   290.40
1990.95    0.239   291.15
1991.95    0.239   291.90
1992.95    0.238   292.65
1993.95    0.237   293.40
1994.95    0.236   294.17
1995.95    0.234   294.94
1996.95    0.232   295.73
1997.95    0.230   296.52
1998.95    0.228   297.34
1999.95    0.225   298.17
2000.95    0.223   299.02
2001.95    0.219   299.89
2002.95    0.216   300.80
2003.95    0.212   301.73
2004.95    0.208   302.69
2005.95    0.204   303.70
2006.95    0.200   304.75
2007.95    0.195   305.84
2008.95    0.190   306.99
2009.95    0.185   308.20
2010.95    0.180   309.48
2011.95    0.175   310.84
2012.95    0.169   312.28
2013.95    0.164   313.82
2014.95    0.158   315.48
2015.95    0.152   317.26
2016.95    0.146   319.18
2017.95    0.140   321.28
2018.95    0.134   323.55
2019.95    0.128   326.05
2020.95    0.122   328.78
2021.95    0.116   331.80
2022.95    0.111   335.12
2023.95    0.105   338.80
2024.95    0.100   342.86
2025.95    0.095   347.33
2026.95    0.091   352.24
2027.95    0.088   357.60
2028.95    0.085     3.36
2029.95    0.083     9.48
2030.95    0.081    15.86
2031.95    0.081    22.37
2032.95    0.081    28.87
2033.95    0.083    35.22
2034.95    0.085    41.29
2035.95    0.088    46.99
2036.95    0.092    52.27
2037.95    0.096    57.12
2038.95    0.101    61.52
2039.95    0.106    65.52
2040.95    0.111    69.14
2041.95    0.117    72.41
2042.95    0.123    75.38
2043.95    0.129    78.08
2044.95    0.135    80.54
2045.95    0.141    82.80
2046.95    0.147    84.87
2047.95    0.153    86.77
2048.95    0.158    88.54
2049.95    0.164    90.18
2050.95    0.170    91.72
2051.95    0.175    93.15
2052.95    0.180    94.51
2053.95    0.185    95.78
2054.95    0.190    96.99
2055.95    0.195    98.14
2056.95    0.199    99.24
2057.95    0.204   100.30
2058.95    0.208   101.31
2059.95    0.211   102.28
2060.95    0.215   103.22
2061.95    0.218   104.14
2062.95    0.221   105.03
2063.95    0.223   105.89
2064.95    0.226   106.74
2065.95    0.228   107.57
2066.95    0.230   108.39
2067.95    0.231   109.19
2068.95    0.232   109.99
2069.95    0.233   110.78
2070.95    0.234   111.56
2071.95    0.234   112.34
2072.95    0.234   113.12
2073.95    0.234   113.91
2074.95    0.233   114.69
2075.95    0.232   115.48
2076.95    0.231   116.27
2077.95    0.230   117.07
2078.95    0.228   117.89
2079.95    0.226   118.71
2080.95    0.224   119.55
2081.95    0.222   120.41
2082.95    0.219   121.29
2083.95    0.216   122.19
2084.95    0.213   123.12
2085.95    0.210   124.07
2086.95    0.206   125.06
2087.95    0.203   126.08
2088.95    0.199   127.14
2089.95    0.195   128.24
2090.95    0.190   129.40
2091.95    0.186   130.61
2092.95    0.181   131.88
2093.95    0.176   133.22
2094.95    0.172   134.63
2095.95    0.167   136.12
2096.95    0.161   137.71
2097.95    0.156   139.40
2098.95    0.151   141.21
2099.95    0.146   143.15
2100.95    0.141   145.23
2101.95    0.136   147.47
2102.95    0.130   149.88
2103.95    0.125   152.49
2104.95    0.121   155.32
2105.95    0.116   158.38
2106.95    0.111   161.69
2107.95    0.107   165.27
2108.95    0.103   169.14
2109.95    0.100   173.29






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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 14:47:05



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