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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:03:26

Orbital Elements for CHR154

WDS:	CHR154	WDS ID/Discoverer
P:	68.200	Orbital period (years)
a:	0.469	Semi-major axis (arcseconds)
i:	64.5	Inclination (degrees)
Ω:	179.2	Longitude of ascending node (degrees)
T:	2007.610	Epoch of periastron passage (year)
e:	0.16	Eccentricity
ω:	266.2	Longitude of periastron (degrees)
Start-Year:	1991.0	Year
End-Year:	2059.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR154

Position:	044025.41+163049.4	Epoch-2000 right ascension and declination
WDS-ID:	04404+1631	WDS designation
Discoverer Code:	CHR154	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	29608	HD catalog number
Hipparcos number:	27162	Hipparcos catalog number
V1:	9.79	Magnitude of the primary
V2:	11.54	Magnitude of the secondary
Equinox:		Equinox
Date:	2020	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR154

WDS 6th Orbit including measures of CHR154

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

Ephemeris of CHR154

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.468    186.2
-------------------------
1991.0     0.455    350.5
1992.0     0.459    352.8
1993.0     0.459    355.2
1994.0     0.456    357.5
1995.0     0.450    359.9
1996.0     0.440      2.4
1997.0     0.427      5.0
1998.0     0.410      7.8
1999.0     0.390     10.9
2000.0     0.366     14.4
2001.0     0.340     18.3
2002.0     0.311     23.0
2003.0     0.281     28.7
2004.0     0.250     35.7
2005.0     0.221     44.6
2006.0     0.195     56.1
2007.0     0.177     70.5
2008.0     0.170     87.1
2009.0     0.175    103.9
2010.0     0.191    118.9
2011.0     0.215    131.0
2012.0     0.244    140.4
2013.0     0.274    147.8
2014.0     0.305    153.7
2015.0     0.335    158.5
2016.0     0.362    162.6
2017.0     0.387    166.1
2018.0     0.409    169.2
2019.0     0.427    172.0
2020.0     0.442    174.6
2021.0     0.454    177.1
2022.0     0.463    179.4
2023.0     0.468    181.7
2024.0     0.469    184.0
2025.0     0.468    186.2
2026.0     0.464    188.5
2027.0     0.457    190.8
2028.0     0.447    193.2
2029.0     0.436    195.7
2030.0     0.422    198.4
2031.0     0.407    201.3
2032.0     0.390    204.4
2033.0     0.372    207.8
2034.0     0.353    211.6
2035.0     0.333    215.8
2036.0     0.314    220.5
2037.0     0.296    225.8
2038.0     0.278    231.8
2039.0     0.263    238.5
2040.0     0.250    246.1
2041.0     0.241    254.3
2042.0     0.235    263.0
2043.0     0.234    272.0
2044.0     0.238    280.9
2045.0     0.245    289.4
2046.0     0.257    297.2
2047.0     0.271    304.3
2048.0     0.287    310.7
2049.0     0.305    316.3
2050.0     0.324    321.3
2051.0     0.343    325.8
2052.0     0.362    329.7
2053.0     0.380    333.3
2054.0     0.397    336.6
2055.0     0.412    339.6
2056.0     0.426    342.4
2057.0     0.438    345.0
2058.0     0.447    347.6

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.