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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:46:09

Orbital Elements for JC8AB

WDS:	JC8AB	WDS ID/Discoverer
P:	45.018	Orbital period (years)
a:	0.404	Semi-major axis (arcseconds)
i:	172.0	Inclination (degrees)
Ω:	36.3	Longitude of ascending node (degrees)
T:	2022.507	Epoch of periastron passage (year)
e:	0.889	Eccentricity
ω:	44.9	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for JC8AB

Position:	031225.68-442510.8	Epoch-2000 right ascension and declination
WDS-ID:	03124-4425	WDS designation
Discoverer Code:	JC8AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	20121	HD catalog number
Hipparcos number:	14913	Hipparcos catalog number
V1:	6.42	Magnitude of the primary
V2:	7.36	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for JC8AB

WDS 6th Orbit including measures of JC8AB

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

Ephemeris of JC8AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.262    211.9
-------------------------
2003.0     0.750    168.6
2004.0     0.743    167.5
2005.0     0.734    166.4
2006.0     0.723    165.3
2007.0     0.710    164.2
2008.0     0.694    163.0
2009.0     0.677    161.7
2010.0     0.656    160.4
2011.0     0.634    158.9
2012.0     0.608    157.4
2013.0     0.580    155.7
2014.0     0.548    153.9
2015.0     0.513    151.8
2016.0     0.474    149.3
2017.0     0.430    146.4
2018.0     0.381    142.8
2019.0     0.325    138.1
2020.0     0.261    131.1
2021.0     0.183    118.9
2022.0     0.086     82.4
2023.0     0.084    261.0
2024.0     0.184    224.0
2025.0     0.262    211.9
2026.0     0.327    205.0
2027.0     0.384    200.3
2028.0     0.433    196.8
2029.0     0.477    193.9
2030.0     0.516    191.5
2031.0     0.551    189.4
2032.0     0.582    187.6
2033.0     0.611    185.9
2034.0     0.636    184.4
2035.0     0.658    183.0
2036.0     0.678    181.6
2037.0     0.696    180.4
2038.0     0.711    179.2
2039.0     0.724    178.0
2040.0     0.735    176.9
2041.0     0.744    175.9
2042.0     0.751    174.8
2043.0     0.756    173.8
2044.0     0.759    172.7
2045.0     0.759    171.7
2046.0     0.758    170.7

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.