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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:01:48

Orbital Elements for LAL21185

WDS:	LAL21185	WDS ID/Discoverer
P:	8.000	Orbital period (years)
a:	0.0336	Semi-major axis (arcseconds)
i:	79.0	Inclination (degrees)
Ω:	81.8	Longitude of ascending node (degrees)
T:	1939.300	Epoch of periastron passage (year)
e:	0.3	Eccentricity
ω:	286.0	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for LAL21185

Position:	110320.61+355853.3	Epoch-2000 right ascension and declination
WDS-ID:	11033+3558	WDS designation
Discoverer Code:	LAL21185	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	95735	HD catalog number
Hipparcos number:	54035	Hipparcos catalog number
V1:	7.49	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1959	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for LAL21185

WDS 6th Orbit including measures of LAL21185

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

Ephemeris of LAL21185

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.034    256.3
-------------------------
2021.0     0.028     90.0
2022.0     0.015    111.2
2023.0     0.010    209.4
2024.0     0.025    246.0
2025.0     0.034    256.3
2026.0     0.030    264.4
2027.0     0.006    309.4
2028.0     0.025     78.4

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.