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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:04:37

Orbital Elements for FME1

WDS:	FME1	WDS ID/Discoverer
P:	14.360	Orbital period (years)
a:	0.21459999999999999	Semi-major axis (arcseconds)
i:	42.41	Inclination (degrees)
Ω:	74.4	Longitude of ascending node (degrees)
T:	2020.664	Epoch of periastron passage (year)
e:	0.353	Eccentricity
ω:	221.5	Longitude of periastron (degrees)
Start-Year:	2018.0	Year
End-Year:	2032.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for FME1

Position:	112149.26-131308.4	Epoch-2000 right ascension and declination
WDS-ID:	11218-1313	WDS designation
Discoverer Code:	FME1	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	11.9	Magnitude of the primary
V2:	15.7	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for FME1

WDS 6th Orbit including measures of FME1

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

Ephemeris of FME1

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.258     75.9
-------------------------
2018.0     0.166    195.1
2019.0     0.160    225.2
2020.0     0.146    258.5
2021.0     0.114    306.5
2022.0     0.126      8.0
2023.0     0.180     43.4
2024.0     0.228     62.6
2025.0     0.258     75.9
2026.0     0.271     87.2
2027.0     0.270     98.0
2028.0     0.257    109.4
2029.0     0.236    122.5
2030.0     0.210    138.6
2031.0     0.186    159.1

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.