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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:06:56

Orbital Elements for TOK845

WDS:	TOK845	WDS ID/Discoverer
P:	30.000	Orbital period (years)
a:	0.127	Semi-major axis (arcseconds)
i:	111.7	Inclination (degrees)
Ω:	46.8	Longitude of ascending node (degrees)
T:	2023.344	Epoch of periastron passage (year)
e:	0.395	Eccentricity
ω:	140.6	Longitude of periastron (degrees)
Start-Year:	2010.0	Year
End-Year:	2040.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK845

Position:	114132.57-770316.9	Epoch-2000 right ascension and declination
WDS-ID:	11415-7703	WDS designation
Discoverer Code:	TOK845	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	101727	HD catalog number
Hipparcos number:	57027	Hipparcos catalog number
V1:	7.5	Magnitude of the primary
V2:	7.6	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2023	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for TOK845

WDS 6th Orbit including measures of TOK845

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

Ephemeris of TOK845

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.084    224.1
-------------------------
2010.0     0.156     58.8
2011.0     0.160     56.2
2012.0     0.162     53.7
2013.0     0.162     51.2
2014.0     0.158     48.6
2015.0     0.152     45.9
2016.0     0.142     42.9
2017.0     0.128     39.2
2018.0     0.110     34.6
2019.0     0.087     27.8
2020.0     0.062     15.7
2021.0     0.038    347.1
2022.0     0.034    287.2
2023.0     0.054    250.4
2024.0     0.074    234.4
2025.0     0.084    224.1
2026.0     0.083    214.8
2027.0     0.076    204.6
2028.0     0.066    191.6
2029.0     0.057    174.0
2030.0     0.052    151.5
2031.0     0.055    128.0
2032.0     0.063    108.7
2033.0     0.076     95.0
2034.0     0.090     85.3
2035.0     0.104     78.2
2036.0     0.117     72.8
2037.0     0.129     68.5
2038.0     0.140     64.8
2039.0     0.149     61.7

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.