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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:00:29

Orbital Elements for THB1

WDS:	THB1	WDS ID/Discoverer
P:	46.100	Orbital period (years)
a:	0.09490000000000001	Semi-major axis (arcseconds)
i:	145.5	Inclination (degrees)
Ω:	33.9	Longitude of ascending node (degrees)
T:	1979.200	Epoch of periastron passage (year)
e:	0.233	Eccentricity
ω:	309.2	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for THB1

Position:	042702.79+254222.6	Epoch-2000 right ascension and declination
WDS-ID:	04271+2542	WDS designation
Discoverer Code:	THB1	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	283654	HD catalog number
Hipparcos number:	20777	Hipparcos catalog number
V1:	12.62	Magnitude of the primary
V2:	13.51	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for THB1

WDS 6th Orbit including measures of THB1

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

Ephemeris of THB1

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.065     83.2
-------------------------
2002.0     0.105    260.5
2003.0     0.106    255.4
2004.0     0.108    250.5
2005.0     0.109    245.7
2006.0     0.110    241.0
2007.0     0.110    236.4
2008.0     0.110    231.7
2009.0     0.110    227.1
2010.0     0.108    222.3
2011.0     0.107    217.5
2012.0     0.105    212.4
2013.0     0.102    207.1
2014.0     0.098    201.5
2015.0     0.094    195.4
2016.0     0.090    188.7
2017.0     0.085    181.3
2018.0     0.079    172.9
2019.0     0.074    163.4
2020.0     0.070    152.4
2021.0     0.066    140.1
2022.0     0.063    126.4
2023.0     0.062    111.8
2024.0     0.063     97.2
2025.0     0.065     83.2
2026.0     0.068     70.3
2027.0     0.071     58.5
2028.0     0.074     47.8
2029.0     0.077     38.0
2030.0     0.079     28.8
2031.0     0.081     20.1
2032.0     0.083     11.7
2033.0     0.083      3.5
2034.0     0.084    355.5
2035.0     0.085    347.6
2036.0     0.085    339.8
2037.0     0.086    332.1
2038.0     0.087    324.5
2039.0     0.088    317.1
2040.0     0.089    309.8
2041.0     0.091    302.8
2042.0     0.092    296.1
2043.0     0.094    289.6
2044.0     0.096    283.4
2045.0     0.098    277.4
2046.0     0.101    271.7
2047.0     0.103    266.3

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.