Double Star Calculator - Orbit

Orbital Elements for B1605BA,BB
WDS: B1605BA,BB WDS ID/Discoverer
P: 103.330 Orbital period (years)
a: 0.199 Semi-major axis (arcseconds)
i: 136.4 Inclination (degrees)
Ω: 277.2 Longitude of ascending node (degrees)
T: 1990.410 Epoch of periastron passage (year)
e: 0.013 Eccentricity
ω: 50.6 Longitude of periastron (degrees)
Start-Year: 1973.335 Year
End-Year: 2076.665 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for B1605BA,BB
Position: 082618.31-390336.8 Epoch-2000 right ascension and declination
WDS-ID: 08263-3904 WDS designation
Discoverer Code: B1605BA,BB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 71488 HD catalog number
Hipparcos number: 41361 Hipparcos catalog number
V1: 7.9 Magnitude of the primary
V2: 8.1 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 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: USN2019 Reference

Double Star Orbit for B1605BA,BB



WDS 6th Orbit including measures of B1605BA,BB

-- 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 B1605BA,BB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.200    98.99
--------------------------
1973.34    0.196   284.61
1974.34    0.197   282.03
1975.34    0.197   279.46
1976.34    0.197   276.89
1977.34    0.197   274.32
1978.34    0.196   271.74
1979.34    0.195   269.13
1980.34    0.194   266.49
1981.34    0.192   263.81
1982.34    0.190   261.08
1983.34    0.188   258.29
1984.34    0.185   255.42
1985.34    0.183   252.47
1986.34    0.180   249.42
1987.34    0.176   246.27
1988.34    0.173   243.00
1989.34    0.170   239.60
1990.34    0.166   236.07
1991.34    0.163   232.39
1992.34    0.160   228.56
1993.34    0.157   224.57
1994.34    0.154   220.41
1995.34    0.151   216.11
1996.34    0.149   211.65
1997.34    0.146   207.06
1998.34    0.145   202.34
1999.34    0.144   197.54
2000.34    0.143   192.67
2001.34    0.143   187.76
2002.34    0.143   182.86
2003.34    0.144   177.99
2004.34    0.145   173.19
2005.34    0.147   168.49
2006.34    0.149   163.90
2007.34    0.151   159.45
2008.34    0.154   155.16
2009.34    0.157   151.02
2010.34    0.160   147.05
2011.34    0.164   143.24
2012.34    0.167   139.58
2013.34    0.170   136.07
2014.34    0.174   132.70
2015.34    0.177   129.46
2016.34    0.181   126.34
2017.34    0.184   123.33
2018.34    0.187   120.41
2019.34    0.189   117.59
2020.34    0.192   114.84
2021.34    0.194   112.15
2022.34    0.196   109.53
2023.34    0.198   106.95
2024.34    0.199   104.41
2025.34    0.200   101.89
2026.34    0.200    99.40
2027.34    0.201    96.91
2028.34    0.201    94.43
2029.34    0.200    91.94
2030.34    0.199    89.44
2031.34    0.198    86.91
2032.34    0.197    84.35
2033.34    0.195    81.75
2034.34    0.193    79.09
2035.34    0.191    76.38
2036.34    0.188    73.60
2037.34    0.185    70.74
2038.34    0.183    67.79
2039.34    0.179    64.74
2040.34    0.176    61.58
2041.34    0.173    58.30
2042.34    0.170    54.90
2043.34    0.166    51.37
2044.34    0.163    47.69
2045.34    0.160    43.87
2046.34    0.157    39.90
2047.34    0.155    35.79
2048.34    0.152    31.54
2049.34    0.150    27.16
2050.34    0.148    22.66
2051.34    0.147    18.08
2052.34    0.146    13.42
2053.34    0.146     8.72
2054.34    0.146     4.00
2055.34    0.146   359.31
2056.34    0.147   354.65
2057.34    0.148   350.07
2058.34    0.150   345.58
2059.34    0.152   341.20
2060.34    0.155   336.95
2061.34    0.157   332.84
2062.34    0.160   328.87
2063.34    0.163   325.05
2064.34    0.166   321.37
2065.34    0.169   317.82
2066.34    0.173   314.41
2067.34    0.176   311.12
2068.34    0.179   307.95
2069.34    0.182   304.88
2070.34    0.185   301.90
2071.34    0.187   299.01
2072.34    0.189   296.19
2073.34    0.192   293.44
2074.34    0.193   290.74
2075.34    0.195   288.09
2076.34    0.196   285.47






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 16:07:31



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