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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:13:50

Orbital Elements for A847BC

WDS:	A847BC	WDS ID/Discoverer
P:	47.030	Orbital period (years)
a:	0.3366	Semi-major axis (arcseconds)
i:	87.6	Inclination (degrees)
Ω:	321.03	Longitude of ascending node (degrees)
T:	1959.880	Epoch of periastron passage (year)
e:	0.288	Eccentricity
ω:	277.7	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A847BC

Position:	052351.33-005159.8	Epoch-2000 right ascension and declination
WDS-ID:	05239-0052	WDS designation
Discoverer Code:	A847BC	Discover designation and components
ADS number:	3991	Aitken Double Star catalog
HD number:	35317	HD catalog number
Hipparcos number:	25240	Hipparcos catalog number
V1:	7.67	Magnitude of the primary
V2:	7.84	Magnitude of the secondary
Equinox:		Equinox
Date:	2017	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A847BC

WDS 6th Orbit including measures of A847BC

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

Ephemeris of A847BC

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.122    328.9
-------------------------
2002.0     0.230    142.6
2003.0     0.187    143.4
2004.0     0.138    144.7
2005.0     0.082    147.8
2006.0     0.025    164.9
2007.0     0.039    306.2
2008.0     0.096    315.5
2009.0     0.150    317.9
2010.0     0.197    319.1
2011.0     0.236    319.8
2012.0     0.266    320.4
2013.0     0.288    320.8
2014.0     0.302    321.2
2015.0     0.309    321.6
2016.0     0.309    321.9
2017.0     0.303    322.3
2018.0     0.292    322.7
2019.0     0.277    323.1
2020.0     0.257    323.6
2021.0     0.235    324.2
2022.0     0.210    324.9
2023.0     0.182    325.8
2024.0     0.153    327.0
2025.0     0.122    328.9
2026.0     0.091    332.0
2027.0     0.059    338.5
2028.0     0.029    359.0
2029.0     0.021     81.2
2030.0     0.048    118.7
2031.0     0.079    128.0
2032.0     0.111    131.9
2033.0     0.142    134.1
2034.0     0.172    135.6
2035.0     0.201    136.6
2036.0     0.228    137.3
2037.0     0.252    137.9
2038.0     0.275    138.4
2039.0     0.294    138.9
2040.0     0.310    139.3
2041.0     0.323    139.6
2042.0     0.332    139.9
2043.0     0.335    140.2
2044.0     0.334    140.5
2045.0     0.327    140.9
2046.0     0.314    141.2
2047.0     0.294    141.6

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.