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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:08:14

Orbital Elements for A75

WDS:	A75	WDS ID/Discoverer
P:	82.300	Orbital period (years)
a:	0.267	Semi-major axis (arcseconds)
i:	104.5	Inclination (degrees)
Ω:	23.0	Longitude of ascending node (degrees)
T:	1921.800	Epoch of periastron passage (year)
e:	0.08	Eccentricity
ω:	277.5	Longitude of periastron (degrees)
Start-Year:	1984.0	Year
End-Year:	2066.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A75

Position:	115404.36+715527.1	Epoch-2000 right ascension and declination
WDS-ID:	11541+7155	WDS designation
Discoverer Code:	A75	Discover designation and components
ADS number:	8344	Aitken Double Star catalog
HD number:	103321	HD catalog number
Hipparcos number:	58026	Hipparcos catalog number
V1:	7.99	Magnitude of the primary
V2:	9.10	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A75

WDS 6th Orbit including measures of A75

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

Ephemeris of A75

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.257     18.3
-------------------------
1984.0     0.268    202.9
1985.0     0.265    201.8
1986.0     0.261    200.7
1987.0     0.256    199.5
1988.0     0.249    198.3
1989.0     0.241    197.0
1990.0     0.231    195.6
1991.0     0.220    194.1
1992.0     0.208    192.4
1993.0     0.194    190.5
1994.0     0.180    188.2
1995.0     0.164    185.6
1996.0     0.148    182.4
1997.0     0.132    178.4
1998.0     0.115    173.3
1999.0     0.099    166.4
2000.0     0.083    156.9
2001.0     0.071    143.6
2002.0     0.063    126.0
2003.0     0.062    105.7
2004.0     0.068     86.9
2005.0     0.079     72.3
2006.0     0.094     61.8
2007.0     0.110     54.3
2008.0     0.127     48.7
2009.0     0.143     44.4
2010.0     0.159     41.0
2011.0     0.175     38.2
2012.0     0.190     35.8
2013.0     0.203     33.8
2014.0     0.216     32.0
2015.0     0.227     30.4
2016.0     0.236     29.0
2017.0     0.245     27.7
2018.0     0.251     26.4
2019.0     0.257     25.2
2020.0     0.260     24.0
2021.0     0.263     22.9
2022.0     0.263     21.8
2023.0     0.263     20.6
2024.0     0.260     19.5
2025.0     0.257     18.3
2026.0     0.252     17.1
2027.0     0.246     15.9
2028.0     0.238     14.6
2029.0     0.230     13.1
2030.0     0.220     11.6
2031.0     0.209      9.9
2032.0     0.198      8.0
2033.0     0.185      5.9
2034.0     0.172      3.5
2035.0     0.159      0.6
2036.0     0.145    357.3
2037.0     0.131    353.2
2038.0     0.118    348.1
2039.0     0.105    341.8
2040.0     0.093    333.8
2041.0     0.083    323.6
2042.0     0.076    311.1
2043.0     0.072    296.7
2044.0     0.073    281.8
2045.0     0.079    268.3
2046.0     0.088    257.0
2047.0     0.099    248.0
2048.0     0.112    241.0
2049.0     0.125    235.4
2050.0     0.139    230.9
2051.0     0.153    227.2
2052.0     0.166    224.2
2053.0     0.180    221.6
2054.0     0.193    219.3
2055.0     0.205    217.4
2056.0     0.216    215.6
2057.0     0.226    214.0
2058.0     0.236    212.5
2059.0     0.244    211.2
2060.0     0.251    209.9
2061.0     0.258    208.7
2062.0     0.262    207.6
2063.0     0.266    206.5
2064.0     0.268    205.4
2065.0     0.269    204.3

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.