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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:38:21

Orbital Elements for CHR143AA,AB

WDS:	CHR143AA,AB	WDS ID/Discoverer
P:	33.080	Orbital period (years)
a:	0.0723	Semi-major axis (arcseconds)
i:	69.9	Inclination (degrees)
Ω:	172.7	Longitude of ascending node (degrees)
T:	2017.670	Epoch of periastron passage (year)
e:	0.284	Eccentricity
ω:	253.5	Longitude of periastron (degrees)
Start-Year:	2009.0	Year
End-Year:	2041.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR143AA,AB

Position:	081230.80-461551.5	Epoch-2000 right ascension and declination
WDS-ID:	08125-4616	WDS designation
Discoverer Code:	CHR143AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	68895	HD catalog number
Hipparcos number:	40183	Hipparcos catalog number
V1:	6.5	Magnitude of the primary
V2:	7.3	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR143AA,AB

WDS 6th Orbit including measures of CHR143AA,AB

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

Ephemeris of CHR143AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.074    174.6
-------------------------
2009.0     0.054    329.7
2010.0     0.059    335.6
2011.0     0.062    340.6
2012.0     0.064    345.3
2013.0     0.063    349.9
2014.0     0.060    354.8
2015.0     0.053      0.7
2016.0     0.043      9.0
2017.0     0.030     23.4
2018.0     0.020     56.0
2019.0     0.020    110.2
2020.0     0.031    140.7
2021.0     0.044    154.1
2022.0     0.055    161.7
2023.0     0.064    166.9
2024.0     0.070    171.1
2025.0     0.074    174.6
2026.0     0.076    178.0
2027.0     0.075    181.2
2028.0     0.073    184.6
2029.0     0.070    188.2
2030.0     0.065    192.3
2031.0     0.060    197.1
2032.0     0.054    202.9
2033.0     0.048    210.1
2034.0     0.042    219.6
2035.0     0.036    232.1
2036.0     0.033    248.1
2037.0     0.031    266.7
2038.0     0.033    285.1
2039.0     0.037    300.6
2040.0     0.042    312.7

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.