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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:56:25

Orbital Elements for CHR209EA,EB

WDS:	CHR209EA,EB	WDS ID/Discoverer
P:	53.500	Orbital period (years)
a:	0.047	Semi-major axis (arcseconds)
i:	72.9	Inclination (degrees)
Ω:	302.0	Longitude of ascending node (degrees)
T:	1980.437	Epoch of periastron passage (year)
e:	0.78	Eccentricity
ω:	26.3	Longitude of periastron (degrees)
Start-Year:	1999.0	Year
End-Year:	2051.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR209EA,EB

Position:	040749.29+621958.6	Epoch-2000 right ascension and declination
WDS-ID:	04078+6220	WDS designation
Discoverer Code:	CHR209EA,EB	Discover designation and components
ADS number:	2984	Aitken Double Star catalog
HD number:	25638	HD catalog number
Hipparcos number:	19270	Hipparcos catalog number
V1:	8.3	Magnitude of the primary
V2:	7.3	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2002	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR209EA,EB

WDS 6th Orbit including measures of CHR209EA,EB

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

Ephemeris of CHR209EA,EB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.033    146.6
-------------------------
1999.0     0.076    126.5
2000.0     0.077    127.0
2001.0     0.077    127.4
2002.0     0.077    127.9
2003.0     0.077    128.3
2004.0     0.077    128.8
2005.0     0.077    129.2
2006.0     0.077    129.7
2007.0     0.076    130.2
2008.0     0.075    130.7
2009.0     0.074    131.2
2010.0     0.073    131.7
2011.0     0.072    132.2
2012.0     0.070    132.7
2013.0     0.068    133.3
2014.0     0.066    133.9
2015.0     0.064    134.5
2016.0     0.062    135.2
2017.0     0.060    136.0
2018.0     0.057    136.8
2019.0     0.054    137.7
2020.0     0.051    138.6
2021.0     0.048    139.8
2022.0     0.045    141.0
2023.0     0.041    142.5
2024.0     0.037    144.3
2025.0     0.033    146.6
2026.0     0.029    149.4
2027.0     0.024    153.3
2028.0     0.020    159.0
2029.0     0.015    168.1
2030.0     0.011    184.9
2031.0     0.008    217.7
2032.0     0.009    260.0
2033.0     0.011    288.4
2034.0     0.009    312.3
2035.0     0.005     57.1
2036.0     0.014    100.8
2037.0     0.023    109.3
2038.0     0.030    113.2
2039.0     0.037    115.6
2040.0     0.043    117.4
2041.0     0.048    118.7
2042.0     0.052    119.8
2043.0     0.056    120.7
2044.0     0.059    121.6
2045.0     0.062    122.3
2046.0     0.065    123.0
2047.0     0.068    123.6
2048.0     0.070    124.2
2049.0     0.071    124.7
2050.0     0.073    125.2

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.