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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:59:43

Orbital Elements for A2768

WDS:	A2768	WDS ID/Discoverer
P:	81.660	Orbital period (years)
a:	0.401	Semi-major axis (arcseconds)
i:	140.1	Inclination (degrees)
Ω:	57.8	Longitude of ascending node (degrees)
T:	1976.390	Epoch of periastron passage (year)
e:	0.55	Eccentricity
ω:	354.9	Longitude of periastron (degrees)
Start-Year:	1985.0	Year
End-Year:	2065.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2768

Position:	104237.53+033458.9	Epoch-2000 right ascension and declination
WDS-ID:	10426+0335	WDS designation
Discoverer Code:	A2768	Discover designation and components
ADS number:	7896	Aitken Double Star catalog
HD number:	92749	HD catalog number
Hipparcos number:	52401	Hipparcos catalog number
V1:	6.92	Magnitude of the primary
V2:	8.45	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2768

WDS 6th Orbit including measures of A2768

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

Ephemeris of A2768

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.603    232.4
-------------------------
1985.0     0.242    319.3
1986.0     0.260    312.1
1987.0     0.279    305.8
1988.0     0.299    300.4
1989.0     0.318    295.6
1990.0     0.338    291.4
1991.0     0.357    287.6
1992.0     0.375    284.2
1993.0     0.394    281.1
1994.0     0.411    278.3
1995.0     0.428    275.8
1996.0     0.444    273.4
1997.0     0.460    271.1
1998.0     0.475    269.1
1999.0     0.489    267.1
2000.0     0.503    265.3
2001.0     0.516    263.5
2002.0     0.528    261.8
2003.0     0.539    260.2
2004.0     0.549    258.7
2005.0     0.559    257.2
2006.0     0.568    255.8
2007.0     0.577    254.4
2008.0     0.584    253.1
2009.0     0.591    251.8
2010.0     0.597    250.5
2011.0     0.603    249.2
2012.0     0.608    248.0
2013.0     0.612    246.8
2014.0     0.615    245.5
2015.0     0.617    244.3
2016.0     0.619    243.2
2017.0     0.620    242.0
2018.0     0.621    240.8
2019.0     0.620    239.6
2020.0     0.619    238.4
2021.0     0.618    237.2
2022.0     0.615    236.1
2023.0     0.612    234.8
2024.0     0.608    233.6
2025.0     0.603    232.4
2026.0     0.598    231.1
2027.0     0.591    229.8
2028.0     0.584    228.5
2029.0     0.577    227.2
2030.0     0.568    225.8
2031.0     0.559    224.4
2032.0     0.548    222.9
2033.0     0.538    221.3
2034.0     0.526    219.7
2035.0     0.513    218.1
2036.0     0.500    216.3
2037.0     0.485    214.4
2038.0     0.470    212.4
2039.0     0.454    210.3
2040.0     0.438    208.0
2041.0     0.420    205.5
2042.0     0.402    202.9
2043.0     0.383    199.9
2044.0     0.363    196.6
2045.0     0.342    193.0
2046.0     0.321    188.8
2047.0     0.300    184.1
2048.0     0.279    178.7
2049.0     0.257    172.4
2050.0     0.237    164.9
2051.0     0.218    156.1
2052.0     0.202    145.8
2053.0     0.189    133.8
2054.0     0.180    120.4
2055.0     0.176    106.0
2056.0     0.176     91.2
2057.0     0.178     76.6
2058.0     0.180     62.4
2059.0     0.182     48.5
2060.0     0.183     34.9
2061.0     0.184     21.3
2062.0     0.187      8.1
2063.0     0.194    355.6
2064.0     0.203    344.1

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.