Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:42:37

Orbital Elements for B1839AB

WDS:	B1839AB	WDS ID/Discoverer
P:	87.500	Orbital period (years)
a:	0.172	Semi-major axis (arcseconds)
i:	180.0	Inclination (degrees)
Ω:	348.7	Longitude of ascending node (degrees)
T:	1961.400	Epoch of periastron passage (year)
e:	0.36	Eccentricity
ω:	0.0	Longitude of periastron (degrees)
Start-Year:	1982.0	Year
End-Year:	2068.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B1839AB

Position:	165935.57-411708.1	Epoch-2000 right ascension and declination
WDS-ID:	16596-4117	WDS designation
Discoverer Code:	B1839AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	153157	HD catalog number
Hipparcos number:	83155	Hipparcos catalog number
V1:	8.36	Magnitude of the primary
V2:	9.58	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for B1839AB

WDS 6th Orbit including measures of B1839AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of B1839AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.200    122.9
-------------------------
1982.0     0.188    224.5
1983.0     0.192    221.3
1984.0     0.195    218.3
1985.0     0.199    215.4
1986.0     0.202    212.5
1987.0     0.205    209.8
1988.0     0.208    207.2
1989.0     0.211    204.6
1990.0     0.214    202.1
1991.0     0.217    199.6
1992.0     0.219    197.2
1993.0     0.221    194.9
1994.0     0.223    192.6
1995.0     0.225    190.3
1996.0     0.227    188.1
1997.0     0.228    185.9
1998.0     0.230    183.7
1999.0     0.231    181.6
2000.0     0.232    179.5
2001.0     0.232    177.3
2002.0     0.233    175.3
2003.0     0.234    173.2
2004.0     0.234    171.1
2005.0     0.234    169.0
2006.0     0.234    166.9
2007.0     0.234    164.9
2008.0     0.233    162.8
2009.0     0.233    160.7
2010.0     0.232    158.6
2011.0     0.231    156.5
2012.0     0.230    154.3
2013.0     0.229    152.2
2014.0     0.227    150.0
2015.0     0.226    147.8
2016.0     0.224    145.5
2017.0     0.222    143.2
2018.0     0.220    140.9
2019.0     0.217    138.5
2020.0     0.215    136.1
2021.0     0.212    133.6
2022.0     0.209    131.0
2023.0     0.206    128.4
2024.0     0.203    125.7
2025.0     0.200    122.9
2026.0     0.196    120.0
2027.0     0.193    117.0
2028.0     0.189    113.9
2029.0     0.185    110.6
2030.0     0.181    107.2
2031.0     0.177    103.7
2032.0     0.172     99.9
2033.0     0.168     96.0
2034.0     0.163     91.9
2035.0     0.158     87.5
2036.0     0.154     82.8
2037.0     0.149     77.8
2038.0     0.144     72.5
2039.0     0.139     66.9
2040.0     0.135     60.9
2041.0     0.130     54.4
2042.0     0.126     47.5
2043.0     0.122     40.1
2044.0     0.119     32.3
2045.0     0.116     24.0
2046.0     0.113     15.4
2047.0     0.111      6.4
2048.0     0.110    357.1
2049.0     0.110    347.8
2050.0     0.111    338.4
2051.0     0.112    329.2
2052.0     0.114    320.3
2053.0     0.116    311.7
2054.0     0.119    303.5
2055.0     0.123    295.8
2056.0     0.127    288.5
2057.0     0.131    281.7
2058.0     0.136    275.3
2059.0     0.140    269.3
2060.0     0.145    263.8
2061.0     0.150    258.5
2062.0     0.155    253.6
2063.0     0.159    249.0
2064.0     0.164    244.7
2065.0     0.169    240.6
2066.0     0.173    236.7
2067.0     0.177    233.0

Disclaimer

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.