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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:42:33

Orbital Elements for A2552

WDS:	A2552	WDS ID/Discoverer
P:	82.400	Orbital period (years)
a:	0.253	Semi-major axis (arcseconds)
i:	125.8	Inclination (degrees)
Ω:	212.9	Longitude of ascending node (degrees)
T:	1968.700	Epoch of periastron passage (year)
e:	0.23	Eccentricity
ω:	343.0	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 A2552

Position:	084840.30+005631.0	Epoch-2000 right ascension and declination
WDS-ID:	08487+0057	WDS designation
Discoverer Code:	A2552	Discover designation and components
ADS number:	7012	Aitken Double Star catalog
HD number:	75207	HD catalog number
Hipparcos number:	43252	Hipparcos catalog number
V1:	9.11	Magnitude of the primary
V2:	8.48	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2552

WDS 6th Orbit including measures of A2552

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

Ephemeris of A2552

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.265     15.7
-------------------------
1984.0     0.150    145.7
1985.0     0.148    138.5
1986.0     0.148    131.3
1987.0     0.150    124.1
1988.0     0.153    117.1
1989.0     0.157    110.5
1990.0     0.163    104.3
1991.0     0.169     98.5
1992.0     0.177     93.2
1993.0     0.185     88.3
1994.0     0.193     83.8
1995.0     0.202     79.7
1996.0     0.211     76.0
1997.0     0.219     72.5
1998.0     0.228     69.4
1999.0     0.237     66.4
2000.0     0.245     63.7
2001.0     0.253     61.1
2002.0     0.261     58.7
2003.0     0.268     56.4
2004.0     0.274     54.2
2005.0     0.281     52.2
2006.0     0.286     50.2
2007.0     0.291     48.3
2008.0     0.296     46.4
2009.0     0.299     44.6
2010.0     0.303     42.9
2011.0     0.305     41.1
2012.0     0.307     39.4
2013.0     0.308     37.8
2014.0     0.308     36.1
2015.0     0.308     34.4
2016.0     0.307     32.7
2017.0     0.305     31.0
2018.0     0.303     29.3
2019.0     0.300     27.6
2020.0     0.296     25.8
2021.0     0.291     23.9
2022.0     0.285     22.0
2023.0     0.279     20.0
2024.0     0.272     17.9
2025.0     0.265     15.7
2026.0     0.257     13.3
2027.0     0.248     10.8
2028.0     0.239      8.2
2029.0     0.229      5.2
2030.0     0.218      2.0
2031.0     0.208    358.5
2032.0     0.197    354.7
2033.0     0.186    350.3
2034.0     0.175    345.4
2035.0     0.165    339.9
2036.0     0.156    333.7
2037.0     0.147    326.8
2038.0     0.140    319.0
2039.0     0.134    310.5
2040.0     0.131    301.4
2041.0     0.130    292.0
2042.0     0.131    282.7
2043.0     0.135    273.6
2044.0     0.140    265.2
2045.0     0.147    257.5
2046.0     0.154    250.4
2047.0     0.162    244.0
2048.0     0.170    238.3
2049.0     0.177    233.0
2050.0     0.183    228.1
2051.0     0.189    223.5
2052.0     0.193    219.1
2053.0     0.196    214.9
2054.0     0.197    210.8
2055.0     0.197    206.7
2056.0     0.195    202.5
2057.0     0.193    198.3
2058.0     0.189    193.9
2059.0     0.185    189.4
2060.0     0.179    184.6
2061.0     0.174    179.5
2062.0     0.168    174.0
2063.0     0.163    168.2
2064.0     0.158    162.0
2065.0     0.154    155.4

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.