Double Star Calculator - Orbit

Orbital Elements for A1835
WDS: A1835 WDS ID/Discoverer
P: 170.500 Orbital period (years)
a: 0.2171 Semi-major axis (arcseconds)
i: 52.1 Inclination (degrees)
Ω: 63.5 Longitude of ascending node (degrees)
T: 1959.300 Epoch of periastron passage (year)
e: 0.62 Eccentricity
ω: 136.2 Longitude of periastron (degrees)
Start-Year: 1939.75 Year
End-Year: 2110.25 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A1835
Position: 042134.17+065827.5 Epoch-2000 right ascension and declination
WDS-ID: 04216+0658 WDS designation
Discoverer Code: A1835 Discover designation and components
ADS number: 3151 Aitken Double Star catalog
HD number: 27597 HD catalog number
Hipparcos number: 20356 Hipparcos catalog number
V1: 8.74 Magnitude of the primary
V2: 9.81 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2024 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: Tok2024e Reference

Double Star Orbit for A1835



WDS 6th Orbit including measures of A1835

-- 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 A1835
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.259    21.77
--------------------------
1939.75    0.177    76.15
1940.75    0.170    77.74
1941.75    0.162    79.48
1942.75    0.155    81.39
1943.75    0.147    83.50
1944.75    0.139    85.86
1945.75    0.130    88.52
1946.75    0.121    91.56
1947.75    0.112    95.08
1948.75    0.103    99.22
1949.75    0.094   104.16
1950.75    0.085   110.14
1951.75    0.077   117.50
1952.75    0.069   126.61
1953.75    0.062   137.83
1954.75    0.058   151.18
1955.75    0.056   166.07
1956.75    0.057   181.17
1957.75    0.061   195.13
1958.75    0.066   207.20
1959.75    0.072   217.34
1960.75    0.078   225.88
1961.75    0.084   233.18
1962.75    0.089   239.58
1963.75    0.094   245.31
1964.75    0.098   250.55
1965.75    0.101   255.43
1966.75    0.103   260.05
1967.75    0.105   264.46
1968.75    0.107   268.70
1969.75    0.109   272.82
1970.75    0.110   276.83
1971.75    0.111   280.74
1972.75    0.113   284.56
1973.75    0.114   288.31
1974.75    0.115   291.97
1975.75    0.116   295.55
1976.75    0.118   299.04
1977.75    0.119   302.45
1978.75    0.121   305.77
1979.75    0.123   308.99
1980.75    0.125   312.13
1981.75    0.127   315.16
1982.75    0.129   318.10
1983.75    0.131   320.94
1984.75    0.134   323.68
1985.75    0.136   326.32
1986.75    0.139   328.87
1987.75    0.141   331.32
1988.75    0.144   333.68
1989.75    0.147   335.94
1990.75    0.150   338.12
1991.75    0.153   340.22
1992.75    0.156   342.24
1993.75    0.159   344.17
1994.75    0.162   346.04
1995.75    0.165   347.83
1996.75    0.168   349.55
1997.75    0.172   351.21
1998.75    0.175   352.81
1999.75    0.178   354.35
2000.75    0.181   355.83
2001.75    0.185   357.27
2002.75    0.188   358.65
2003.75    0.191   359.98
2004.75    0.194     1.27
2005.75    0.198     2.52
2006.75    0.201     3.73
2007.75    0.204     4.90
2008.75    0.207     6.03
2009.75    0.211     7.13
2010.75    0.214     8.19
2011.75    0.217     9.23
2012.75    0.220    10.23
2013.75    0.223    11.21
2014.75    0.226    12.16
2015.75    0.229    13.09
2016.75    0.232    13.99
2017.75    0.235    14.87
2018.75    0.238    15.73
2019.75    0.241    16.57
2020.75    0.243    17.39
2021.75    0.246    18.19
2022.75    0.249    18.97
2023.75    0.252    19.74
2024.75    0.254    20.49
2025.75    0.257    21.22
2026.75    0.259    21.94
2027.75    0.262    22.65
2028.75    0.264    23.35
2029.75    0.266    24.03
2030.75    0.269    24.70
2031.75    0.271    25.36
2032.75    0.273    26.00
2033.75    0.275    26.64
2034.75    0.277    27.27
2035.75    0.279    27.89
2036.75    0.281    28.50
2037.75    0.283    29.10
2038.75    0.285    29.69
2039.75    0.287    30.28
2040.75    0.289    30.86
2041.75    0.290    31.43
2042.75    0.292    31.99
2043.75    0.293    32.55
2044.75    0.295    33.11
2045.75    0.296    33.66
2046.75    0.298    34.20
2047.75    0.299    34.74
2048.75    0.300    35.28
2049.75    0.301    35.81
2050.75    0.302    36.33
2051.75    0.303    36.86
2052.75    0.304    37.38
2053.75    0.305    37.89
2054.75    0.306    38.41
2055.75    0.306    38.92
2056.75    0.307    39.43
2057.75    0.307    39.94
2058.75    0.308    40.45
2059.75    0.308    40.95
2060.75    0.309    41.46
2061.75    0.309    41.96
2062.75    0.309    42.46
2063.75    0.309    42.97
2064.75    0.309    43.47
2065.75    0.309    43.97
2066.75    0.308    44.48
2067.75    0.308    44.98
2068.75    0.308    45.49
2069.75    0.307    45.99
2070.75    0.307    46.50
2071.75    0.306    47.02
2072.75    0.305    47.53
2073.75    0.304    48.05
2074.75    0.303    48.57
2075.75    0.302    49.09
2076.75    0.301    49.62
2077.75    0.299    50.15
2078.75    0.298    50.69
2079.75    0.296    51.23
2080.75    0.295    51.78
2081.75    0.293    52.34
2082.75    0.291    52.90
2083.75    0.289    53.47
2084.75    0.287    54.05
2085.75    0.285    54.64
2086.75    0.282    55.23
2087.75    0.280    55.84
2088.75    0.277    56.46
2089.75    0.274    57.09
2090.75    0.271    57.74
2091.75    0.268    58.40
2092.75    0.265    59.07
2093.75    0.261    59.77
2094.75    0.258    60.48
2095.75    0.254    61.21
2096.75    0.250    61.97
2097.75    0.246    62.75
2098.75    0.242    63.55
2099.75    0.237    64.39
2100.75    0.232    65.26
2101.75    0.228    66.17
2102.75    0.222    67.11
2103.75    0.217    68.11
2104.75    0.212    69.15
2105.75    0.206    70.25
2106.75    0.200    71.42
2107.75    0.194    72.65
2108.75    0.187    73.98
2109.75    0.180    75.40






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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 15:21:51



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