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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:06:54

Orbital Elements for CHR87

WDS:	CHR87	WDS ID/Discoverer
P:	47.160	Orbital period (years)
a:	0.14	Semi-major axis (arcseconds)
i:	59.5	Inclination (degrees)
Ω:	166.1	Longitude of ascending node (degrees)
T:	2020.440	Epoch of periastron passage (year)
e:	0.198	Eccentricity
ω:	80.8	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 CHR87

Position:	193336.43+384542.9	Epoch-2000 right ascension and declination
WDS-ID:	19336+3846	WDS designation
Discoverer Code:	CHR87	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	184603	HD catalog number
Hipparcos number:	96195	Hipparcos catalog number
V1:	7.19	Magnitude of the primary
V2:	7.68	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for CHR87

WDS 6th Orbit including measures of CHR87

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

Ephemeris of CHR87

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.091    316.4
-------------------------
2002.0     0.094    108.9
2003.0     0.099    116.9
2004.0     0.105    124.0
2005.0     0.111    130.4
2006.0     0.117    136.1
2007.0     0.123    141.3
2008.0     0.127    146.0
2009.0     0.131    150.5
2010.0     0.133    154.7
2011.0     0.134    158.9
2012.0     0.132    163.1
2013.0     0.129    167.4
2014.0     0.124    172.1
2015.0     0.116    177.2
2016.0     0.107    183.2
2017.0     0.095    190.5
2018.0     0.083    199.9
2019.0     0.071    212.4
2020.0     0.062    229.4
2021.0     0.057    250.8
2022.0     0.059    273.2
2023.0     0.067    292.0
2024.0     0.079    306.0
2025.0     0.091    316.4
2026.0     0.104    324.2
2027.0     0.115    330.4
2028.0     0.124    335.7
2029.0     0.131    340.2
2030.0     0.137    344.3
2031.0     0.141    348.2
2032.0     0.142    351.9
2033.0     0.143    355.6
2034.0     0.141    359.3
2035.0     0.138      3.1
2036.0     0.134      7.1
2037.0     0.129     11.4
2038.0     0.123     16.0
2039.0     0.117     21.2
2040.0     0.110     27.0
2041.0     0.104     33.5
2042.0     0.098     40.8
2043.0     0.092     49.1
2044.0     0.088     58.2
2045.0     0.086     68.1
2046.0     0.085     78.4
2047.0     0.086     88.6

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.