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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:34:39

Orbital Elements for CHR51

WDS:	CHR51	WDS ID/Discoverer
P:	64.842	Orbital period (years)
a:	0.562	Semi-major axis (arcseconds)
i:	94.4	Inclination (degrees)
Ω:	54.3	Longitude of ascending node (degrees)
T:	2033.411	Epoch of periastron passage (year)
e:	0.8	Eccentricity
ω:	100.0	Longitude of periastron (degrees)
Start-Year:	1993.0	Year
End-Year:	2057.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR51

Position:	155115.65-030525.5	Epoch-2000 right ascension and declination
WDS-ID:	15513-0305	WDS designation
Discoverer Code:	CHR51	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	141851	HD catalog number
Hipparcos number:	77660	Hipparcos catalog number
V1:	5.2	Magnitude of the primary
V2:	7.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for CHR51

WDS 6th Orbit including measures of CHR51

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

Ephemeris of CHR51

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.415     58.6
-------------------------
1993.0     0.079    124.9
1994.0     0.088    113.1
1995.0     0.099    103.8
1996.0     0.113     96.6
1997.0     0.128     91.0
1998.0     0.143     86.6
1999.0     0.159     83.1
2000.0     0.175     80.2
2001.0     0.192     77.8
2002.0     0.208     75.8
2003.0     0.224     74.0
2004.0     0.240     72.5
2005.0     0.256     71.2
2006.0     0.271     70.1
2007.0     0.286     69.0
2008.0     0.301     68.1
2009.0     0.315     67.2
2010.0     0.329     66.5
2011.0     0.342     65.7
2012.0     0.354     65.1
2013.0     0.366     64.4
2014.0     0.377     63.9
2015.0     0.387     63.3
2016.0     0.397     62.8
2017.0     0.405     62.3
2018.0     0.412     61.8
2019.0     0.418     61.3
2020.0     0.422     60.9
2021.0     0.425     60.4
2022.0     0.426     60.0
2023.0     0.425     59.5
2024.0     0.422     59.1
2025.0     0.415     58.6
2026.0     0.405     58.1
2027.0     0.391     57.6
2028.0     0.371     57.1
2029.0     0.344     56.5
2030.0     0.307     55.7
2031.0     0.253     54.7
2032.0     0.174     52.9
2033.0     0.047     43.9
2034.0     0.105    237.4
2035.0     0.194    233.7
2036.0     0.237    232.0
2037.0     0.258    230.7
2038.0     0.267    229.5
2039.0     0.269    228.4
2040.0     0.266    227.3
2041.0     0.260    226.1
2042.0     0.251    224.9
2043.0     0.240    223.6
2044.0     0.228    222.1
2045.0     0.214    220.4
2046.0     0.200    218.5
2047.0     0.185    216.3
2048.0     0.169    213.8
2049.0     0.154    210.7
2050.0     0.138    206.9
2051.0     0.123    202.1
2052.0     0.109    196.1
2053.0     0.096    188.4
2054.0     0.085    178.4
2055.0     0.077    166.0
2056.0     0.073    151.5

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.