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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:55:18

Orbital Elements for CHR145

WDS:	CHR145	WDS ID/Discoverer
P:	45.590	Orbital period (years)
a:	0.505	Semi-major axis (arcseconds)
i:	95.1	Inclination (degrees)
Ω:	17.7	Longitude of ascending node (degrees)
T:	2049.110	Epoch of periastron passage (year)
e:	0.813	Eccentricity
ω:	91.4	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 CHR145

Position:	100001.70+243309.9	Epoch-2000 right ascension and declination
WDS-ID:	10000+2433	WDS designation
Discoverer Code:	CHR145	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	86590	HD catalog number
Hipparcos number:	49018	Hipparcos catalog number
V1:	8.12	Magnitude of the primary
V2:	10.43	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR145

WDS 6th Orbit including measures of CHR145

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

Ephemeris of CHR145

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.082    112.7
-------------------------
2003.0     0.100     14.3
2004.0     0.097    201.1
2005.0     0.203    196.4
2006.0     0.251    194.4
2007.0     0.274    192.9
2008.0     0.284    191.6
2009.0     0.286    190.3
2010.0     0.283    189.0
2011.0     0.276    187.7
2012.0     0.266    186.2
2013.0     0.254    184.7
2014.0     0.240    183.0
2015.0     0.225    181.1
2016.0     0.209    178.8
2017.0     0.192    176.2
2018.0     0.174    173.1
2019.0     0.157    169.3
2020.0     0.140    164.6
2021.0     0.123    158.5
2022.0     0.108    150.7
2023.0     0.095    140.5
2024.0     0.086    127.7
2025.0     0.082    112.7
2026.0     0.083     97.0
2027.0     0.090     82.8
2028.0     0.101     71.2
2029.0     0.115     62.1
2030.0     0.131     55.2
2031.0     0.148     49.7
2032.0     0.165     45.5
2033.0     0.183     42.0
2034.0     0.200     39.2
2035.0     0.217     36.8
2036.0     0.234     34.7
2037.0     0.249     32.9
2038.0     0.264     31.3
2039.0     0.277     29.9
2040.0     0.288     28.6
2041.0     0.297     27.4
2042.0     0.304     26.2
2043.0     0.307     25.1
2044.0     0.305     24.0
2045.0     0.296     22.8
2046.0     0.278     21.6

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.