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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:04:52

Orbital Elements for CHR127AB

WDS:	CHR127AB	WDS ID/Discoverer
P:	59.200	Orbital period (years)
a:	0.17	Semi-major axis (arcseconds)
i:	57.0	Inclination (degrees)
Ω:	151.5	Longitude of ascending node (degrees)
T:	1983.160	Epoch of periastron passage (year)
e:	0.539	Eccentricity
ω:	34.9	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR127AB

Position:	045336.45+252158.9	Epoch-2000 right ascension and declination
WDS-ID:	04536+2522	WDS designation
Discoverer Code:	CHR127AB	Discover designation and components
ADS number:	3501	Aitken Double Star catalog
HD number:	31033	HD catalog number
Hipparcos number:	22747	Hipparcos catalog number
V1:	7.42	Magnitude of the primary
V2:	9.12	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2011	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for CHR127AB

WDS 6th Orbit including measures of CHR127AB

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

Ephemeris of CHR127AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.150     19.5
-------------------------
1996.0     0.196    326.7
1997.0     0.205    328.7
1998.0     0.212    330.5
1999.0     0.219    332.3
2000.0     0.225    333.9
2001.0     0.230    335.5
2002.0     0.233    337.0
2003.0     0.237    338.4
2004.0     0.239    339.9
2005.0     0.240    341.3
2006.0     0.241    342.7
2007.0     0.241    344.0
2008.0     0.241    345.4
2009.0     0.239    346.8
2010.0     0.238    348.2
2011.0     0.235    349.7
2012.0     0.232    351.2
2013.0     0.229    352.7
2014.0     0.225    354.2
2015.0     0.220    355.9
2016.0     0.215    357.6
2017.0     0.209    359.4
2018.0     0.203      1.3
2019.0     0.197      3.3
2020.0     0.190      5.5
2021.0     0.182      7.8
2022.0     0.175     10.3
2023.0     0.167     13.1
2024.0     0.159     16.1
2025.0     0.150     19.5
2026.0     0.142     23.3
2027.0     0.133     27.6
2028.0     0.125     32.5
2029.0     0.117     38.0
2030.0     0.109     44.4
2031.0     0.102     51.6
2032.0     0.096     59.9
2033.0     0.091     69.1
2034.0     0.088     79.2
2035.0     0.086     89.8
2036.0     0.086    100.7
2037.0     0.087    111.4
2038.0     0.089    121.8
2039.0     0.089    132.0
2040.0     0.088    142.2
2041.0     0.083    153.3
2042.0     0.073    166.5
2043.0     0.061    184.7
2044.0     0.051    211.4
2045.0     0.051    244.1
2046.0     0.062    270.6
2047.0     0.078    287.4
2048.0     0.096    298.1
2049.0     0.114    305.5
2050.0     0.131    310.9
2051.0     0.146    315.1
2052.0     0.160    318.5
2053.0     0.173    321.5

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.