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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:31:10

Orbital Elements for CHR4AA,AB

WDS:	CHR4AA,AB	WDS ID/Discoverer
P:	36.900	Orbital period (years)
a:	0.122	Semi-major axis (arcseconds)
i:	34.4	Inclination (degrees)
Ω:	32.0	Longitude of ascending node (degrees)
T:	2004.800	Epoch of periastron passage (year)
e:	0.234	Eccentricity
ω:	348.6	Longitude of periastron (degrees)
Start-Year:	2007.0	Year
End-Year:	2043.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR4AA,AB

Position:	014915.47+475347.1	Epoch-2000 right ascension and declination
WDS-ID:	01493+4754	WDS designation
Discoverer Code:	CHR4AA,AB	Discover designation and components
ADS number:	1438	Aitken Double Star catalog
HD number:	11031	HD catalog number
Hipparcos number:	8475	Hipparcos catalog number
V1:	6.47	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR4AA,AB

WDS 6th Orbit including measures of CHR4AA,AB

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

Ephemeris of CHR4AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.150    211.6
-------------------------
2007.0     0.094     51.6
2008.0     0.094     64.8
2009.0     0.093     78.1
2010.0     0.094     91.4
2011.0     0.095    104.4
2012.0     0.098    116.9
2013.0     0.102    128.5
2014.0     0.107    139.2
2015.0     0.113    148.7
2016.0     0.119    157.4
2017.0     0.125    165.2
2018.0     0.131    172.2
2019.0     0.136    178.8
2020.0     0.141    184.8
2021.0     0.145    190.5
2022.0     0.148    196.0
2023.0     0.149    201.3
2024.0     0.150    206.4
2025.0     0.150    211.6
2026.0     0.148    216.9
2027.0     0.146    222.3
2028.0     0.142    227.9
2029.0     0.137    233.8
2030.0     0.132    240.3
2031.0     0.125    247.3
2032.0     0.118    255.2
2033.0     0.111    264.1
2034.0     0.104    274.2
2035.0     0.097    285.8
2036.0     0.092    298.9
2037.0     0.088    313.3
2038.0     0.087    328.5
2039.0     0.088    343.8
2040.0     0.089    358.7
2041.0     0.092     13.0
2042.0     0.093     26.6

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.