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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:17:10

Orbital Elements for A751

WDS:	A751	WDS ID/Discoverer
P:	56.870	Orbital period (years)
a:	0.169	Semi-major axis (arcseconds)
i:	130.6	Inclination (degrees)
Ω:	177.3	Longitude of ascending node (degrees)
T:	1976.040	Epoch of periastron passage (year)
e:	0.591	Eccentricity
ω:	276.2	Longitude of periastron (degrees)
Start-Year:	1997.0	Year
End-Year:	2053.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A751

Position:	205341.31+591827.7	Epoch-2000 right ascension and declination
WDS-ID:	20537+5918	WDS designation
Discoverer Code:	A751	Discover designation and components
ADS number:	14412	Aitken Double Star catalog
HD number:	199306	HD catalog number
Hipparcos number:	103130	Hipparcos catalog number
V1:	7.66	Magnitude of the primary
V2:	7.96	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2011	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A751

WDS 6th Orbit including measures of A751

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

Ephemeris of A751

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.150     14.0
-------------------------
1997.0     0.169    101.6
1998.0     0.170     98.3
1999.0     0.171     95.0
2000.0     0.172     91.8
2001.0     0.173     88.6
2002.0     0.174     85.5
2003.0     0.175     82.4
2004.0     0.176     79.3
2005.0     0.177     76.2
2006.0     0.178     73.2
2007.0     0.178     70.2
2008.0     0.179     67.2
2009.0     0.180     64.3
2010.0     0.180     61.4
2011.0     0.181     58.5
2012.0     0.181     55.6
2013.0     0.181     52.7
2014.0     0.181     49.8
2015.0     0.181     46.9
2016.0     0.180     44.0
2017.0     0.179     41.0
2018.0     0.178     38.0
2019.0     0.176     35.0
2020.0     0.173     31.9
2021.0     0.170     28.7
2022.0     0.167     25.3
2023.0     0.162     21.8
2024.0     0.157     18.1
2025.0     0.150     14.0
2026.0     0.142      9.6
2027.0     0.132      4.5
2028.0     0.120    358.5
2029.0     0.105    351.0
2030.0     0.088    340.9
2031.0     0.069    325.3
2032.0     0.051    297.6
2033.0     0.046    253.7
2034.0     0.059    216.9
2035.0     0.078    196.0
2036.0     0.095    183.2
2037.0     0.108    174.0
2038.0     0.120    166.7
2039.0     0.129    160.5
2040.0     0.136    155.1
2041.0     0.141    150.2
2042.0     0.146    145.6
2043.0     0.150    141.2
2044.0     0.153    137.1
2045.0     0.156    133.1
2046.0     0.158    129.3
2047.0     0.160    125.5
2048.0     0.162    121.9
2049.0     0.163    118.3
2050.0     0.165    114.8
2051.0     0.166    111.3
2052.0     0.167    107.9

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.