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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:55:41

Orbital Elements for TOK396AA,AB

WDS:	TOK396AA,AB	WDS ID/Discoverer
P:	34.750	Orbital period (years)
a:	0.21	Semi-major axis (arcseconds)
i:	80.7	Inclination (degrees)
Ω:	5.7	Longitude of ascending node (degrees)
T:	2022.012	Epoch of periastron passage (year)
e:	0.252	Eccentricity
ω:	147.6	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK396AA,AB

Position:	100538.68-840520.1	Epoch-2000 right ascension and declination
WDS-ID:	10056-8405	WDS designation
Discoverer Code:	TOK396AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	88948	HD catalog number
Hipparcos number:	49442	Hipparcos catalog number
V1:	7.9	Magnitude of the primary
V2:	9.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for TOK396AA,AB

WDS 6th Orbit including measures of TOK396AA,AB

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

Ephemeris of TOK396AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.161    188.8
-------------------------
2008.0     0.252      4.0
2009.0     0.252      5.1
2010.0     0.247      6.2
2011.0     0.237      7.5
2012.0     0.222      8.8
2013.0     0.202     10.4
2014.0     0.176     12.4
2015.0     0.146     15.2
2016.0     0.112     19.5
2017.0     0.074     28.1
2018.0     0.038     54.1
2019.0     0.033    130.7
2020.0     0.067    164.3
2021.0     0.103    174.6
2022.0     0.133    179.8
2023.0     0.153    183.3
2024.0     0.163    186.1
2025.0     0.161    188.8
2026.0     0.150    191.7
2027.0     0.131    195.3
2028.0     0.107    200.3
2029.0     0.080    208.6
2030.0     0.054    225.3
2031.0     0.037    263.5
2032.0     0.046    310.4
2033.0     0.070    333.2
2034.0     0.099    343.6
2035.0     0.127    349.3
2036.0     0.153    353.0
2037.0     0.177    355.6
2038.0     0.199    357.6
2039.0     0.217    359.3
2040.0     0.232      0.7
2041.0     0.243      2.0

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.