Double Star Calculator - Orbit

Orbital Elements for B1863AB

WDS:	B1863AB	WDS ID/Discoverer
P:	117.400	Orbital period (years)
a:	0.166	Semi-major axis (arcseconds)
i:	62.6	Inclination (degrees)
Ω:	69.4	Longitude of ascending node (degrees)
T:	2010.250	Epoch of periastron passage (year)
e:	0.9	Eccentricity
ω:	260.0	Longitude of periastron (degrees)
Start-Year:	1966.3	Year
End-Year:	2083.7	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B1863AB
Position:	173409.17-191029.6	Epoch-2000 right ascension and declination
WDS-ID:	17342-1910	WDS designation
Discoverer Code:	B1863AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	159190	HD catalog number
Hipparcos number:	85965	Hipparcos catalog number
V1:	9.0	Magnitude of the primary
V2:	9.0	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Tok2020g	Reference

Double Star Orbit for B1863AB

WDS 6th Orbit including measures of B1863AB

-- 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 B1863AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.126   106.20
--------------------------
1966.30    0.141   149.94
1967.30    0.140   150.81
1968.30    0.138   151.69
1969.30    0.137   152.58
1970.30    0.136   153.49
1971.30    0.135   154.42
1972.30    0.133   155.36
1973.30    0.132   156.32
1974.30    0.131   157.30
1975.30    0.129   158.31
1976.30    0.128   159.34
1977.30    0.126   160.39
1978.30    0.125   161.46
1979.30    0.123   162.56
1980.30    0.122   163.69
1981.30    0.120   164.86
1982.30    0.118   166.05
1983.30    0.117   167.28
1984.30    0.115   168.54
1985.30    0.113   169.85
1986.30    0.111   171.20
1987.30    0.109   172.59
1988.30    0.107   174.03
1989.30    0.105   175.53
1990.30    0.103   177.08
1991.30    0.101   178.70
1992.30    0.099   180.38
1993.30    0.097   182.15
1994.30    0.095   183.99
1995.30    0.092   185.93
1996.30    0.090   187.97
1997.30    0.087   190.12
1998.30    0.085   192.41
1999.30    0.082   194.85
2000.30    0.079   197.45
2001.30    0.076   200.27
2002.30    0.073   203.33
2003.30    0.069   206.69
2004.30    0.065   210.42
2005.30    0.061   214.67
2006.30    0.056   219.63
2007.30    0.050   225.70
2008.30    0.042   233.83
2009.30    0.029   247.54
2010.30    0.008   332.19
2011.30    0.030    63.91
2012.30    0.048    75.38
2013.30    0.060    81.28
2014.30    0.070    85.32
2015.30    0.078    88.44
2016.30    0.085    91.00
2017.30    0.091    93.20
2018.30    0.096    95.14
2019.30    0.101    96.87
2020.30    0.106    98.46
2021.30    0.110    99.92
2022.30    0.114   101.27
2023.30    0.117   102.55
2024.30    0.120   103.75
2025.30    0.123   104.90
2026.30    0.126   105.99
2027.30    0.129   107.04
2028.30    0.131   108.05
2029.30    0.133   109.02
2030.30    0.135   109.96
2031.30    0.137   110.87
2032.30    0.139   111.76
2033.30    0.141   112.63
2034.30    0.142   113.47
2035.30    0.144   114.30
2036.30    0.145   115.11
2037.30    0.146   115.91
2038.30    0.148   116.69
2039.30    0.149   117.46
2040.30    0.150   118.22
2041.30    0.151   118.98
2042.30    0.152   119.72
2043.30    0.152   120.45
2044.30    0.153   121.18
2045.30    0.154   121.90
2046.30    0.154   122.61
2047.30    0.155   123.32
2048.30    0.155   124.03
2049.30    0.156   124.73
2050.30    0.156   125.43
2051.30    0.156   126.12
2052.30    0.157   126.81
2053.30    0.157   127.50
2054.30    0.157   128.19
2055.30    0.157   128.88
2056.30    0.157   129.57
2057.30    0.157   130.26
2058.30    0.157   130.95
2059.30    0.157   131.64
2060.30    0.156   132.33
2061.30    0.156   133.03
2062.30    0.156   133.72
2063.30    0.156   134.42
2064.30    0.155   135.12
2065.30    0.155   135.83
2066.30    0.154   136.54
2067.30    0.154   137.25
2068.30    0.153   137.97
2069.30    0.153   138.69
2070.30    0.152   139.42
2071.30    0.152   140.15
2072.30    0.151   140.89
2073.30    0.150   141.64
2074.30    0.149   142.39
2075.30    0.149   143.16
2076.30    0.148   143.93
2077.30    0.147   144.71
2078.30    0.146   145.50
2079.30    0.145   146.29
2080.30    0.144   147.10
2081.30    0.143   147.92
2082.30    0.142   148.76
2083.30    0.141   149.60

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 17:40:12