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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:41:49

Orbital Elements for A1143AB

WDS:	A1143AB	WDS ID/Discoverer
P:	88.200	Orbital period (years)
a:	0.29	Semi-major axis (arcseconds)
i:	136.4	Inclination (degrees)
Ω:	101.7	Longitude of ascending node (degrees)
T:	1949.800	Epoch of periastron passage (year)
e:	0.632	Eccentricity
ω:	39.2	Longitude of periastron (degrees)
Start-Year:	1981.0	Year
End-Year:	2069.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1143AB

Position:	165634.99+571117.2	Epoch-2000 right ascension and declination
WDS-ID:	16566+5711	WDS designation
Discoverer Code:	A1143AB	Discover designation and components
ADS number:	10276	Aitken Double Star catalog
HD number:	153495	HD catalog number
Hipparcos number:	82910	Hipparcos catalog number
V1:	9.44	Magnitude of the primary
V2:	9.72	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1997	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A1143AB

WDS 6th Orbit including measures of A1143AB

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

Ephemeris of A1143AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.208    190.9
-------------------------
1981.0     0.427    264.4
1982.0     0.429    263.4
1983.0     0.431    262.4
1984.0     0.433    261.3
1985.0     0.434    260.3
1986.0     0.435    259.3
1987.0     0.435    258.3
1988.0     0.435    257.2
1989.0     0.434    256.2
1990.0     0.433    255.2
1991.0     0.432    254.2
1992.0     0.430    253.1
1993.0     0.428    252.1
1994.0     0.426    251.0
1995.0     0.423    250.0
1996.0     0.420    248.9
1997.0     0.416    247.8
1998.0     0.413    246.6
1999.0     0.409    245.5
2000.0     0.404    244.3
2001.0     0.399    243.1
2002.0     0.394    241.9
2003.0     0.389    240.7
2004.0     0.383    239.4
2005.0     0.377    238.0
2006.0     0.371    236.7
2007.0     0.364    235.2
2008.0     0.358    233.8
2009.0     0.350    232.2
2010.0     0.343    230.6
2011.0     0.335    229.0
2012.0     0.327    227.2
2013.0     0.319    225.4
2014.0     0.311    223.4
2015.0     0.302    221.4
2016.0     0.293    219.2
2017.0     0.284    216.9
2018.0     0.275    214.4
2019.0     0.266    211.8
2020.0     0.256    209.0
2021.0     0.247    205.9
2022.0     0.237    202.6
2023.0     0.227    199.0
2024.0     0.218    195.2
2025.0     0.208    190.9
2026.0     0.199    186.3
2027.0     0.190    181.2
2028.0     0.181    175.6
2029.0     0.173    169.4
2030.0     0.165    162.6
2031.0     0.157    155.2
2032.0     0.150    147.0
2033.0     0.143    138.1
2034.0     0.136    128.2
2035.0     0.128    117.2
2036.0     0.119    104.7
2037.0     0.108     89.7
2038.0     0.096     71.1
2039.0     0.087     47.9
2040.0     0.087     22.0
2041.0     0.097    358.8
2042.0     0.114    341.4
2043.0     0.135    328.8
2044.0     0.156    319.7
2045.0     0.178    312.8
2046.0     0.198    307.3
2047.0     0.218    302.9
2048.0     0.236    299.1
2049.0     0.253    295.9
2050.0     0.269    293.1
2051.0     0.285    290.6
2052.0     0.299    288.3
2053.0     0.312    286.2
2054.0     0.324    284.3
2055.0     0.336    282.6
2056.0     0.346    280.9
2057.0     0.356    279.4
2058.0     0.365    277.9
2059.0     0.374    276.5
2060.0     0.382    275.1
2061.0     0.389    273.8
2062.0     0.396    272.6
2063.0     0.402    271.4
2064.0     0.407    270.2
2065.0     0.412    269.0
2066.0     0.416    267.9
2067.0     0.420    266.8
2068.0     0.424    265.7

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.