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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:40:07

Orbital Elements for STF2084

WDS:	STF2084	WDS ID/Discoverer
P:	34.464	Orbital period (years)
a:	1.32834	Semi-major axis (arcseconds)
i:	131.6	Inclination (degrees)
Ω:	50.601	Longitude of ascending node (degrees)
T:	1933.352	Epoch of periastron passage (year)
e:	0.46342	Eccentricity
ω:	113.177	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 STF2084

Position:	164117.16+313609.8	Epoch-2000 right ascension and declination
WDS-ID:	16413+3136	WDS designation
Discoverer Code:	STF2084	Discover designation and components
ADS number:	10157	Aitken Double Star catalog
HD number:	150680	HD catalog number
Hipparcos number:	81693	Hipparcos catalog number
V1:	2.95	Magnitude of the primary
V2:	5.40	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF2084

WDS 6th Orbit including measures of STF2084

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

Ephemeris of STF2084

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.559     81.3
-------------------------
2008.0     1.075    194.8
2009.0     1.094    185.6
2010.0     1.108    176.6
2011.0     1.124    167.9
2012.0     1.142    159.4
2013.0     1.166    151.3
2014.0     1.194    143.5
2015.0     1.228    136.1
2016.0     1.265    129.1
2017.0     1.306    122.6
2018.0     1.348    116.4
2019.0     1.391    110.6
2020.0     1.431    105.2
2021.0     1.469    100.0
2022.0     1.503     95.1
2023.0     1.530     90.4
2024.0     1.549     85.8
2025.0     1.559     81.3
2026.0     1.557     76.9
2027.0     1.542     72.4
2028.0     1.511     67.7
2029.0     1.461     62.8
2030.0     1.389     57.5
2031.0     1.291     51.5
2032.0     1.162     44.3
2033.0     1.001     35.0
2034.0     0.809     21.6
2035.0     0.608    359.5
2036.0     0.486    321.0
2037.0     0.551    278.0
2038.0     0.716    250.3
2039.0     0.863    232.9
2040.0     0.964    220.0
2041.0     1.026    209.1

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.