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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:03:59

Orbital Elements for MCA35

WDS:	MCA35	WDS ID/Discoverer
P:	8.112	Orbital period (years)
a:	0.0462	Semi-major axis (arcseconds)
i:	49.1	Inclination (degrees)
Ω:	283.3	Longitude of ascending node (degrees)
T:	1974.015	Epoch of periastron passage (year)
e:	0.415	Eccentricity
ω:	156.5	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 MCA35

Position:	111551.90+131827.3	Epoch-2000 right ascension and declination
WDS-ID:	11159+1318	WDS designation
Discoverer Code:	MCA35	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	97907	HD catalog number
Hipparcos number:	55016	Hipparcos catalog number
V1:	5.6	Magnitude of the primary
V2:	6.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1993	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA35

WDS 6th Orbit including measures of MCA35

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

Ephemeris of MCA35

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.042    232.1
-------------------------
2021.0     0.044    307.6
2022.0     0.022      8.5
2023.0     0.028    111.3
2024.0     0.029    183.2
2025.0     0.042    232.1
2026.0     0.056    255.6
2027.0     0.063    271.1
2028.0     0.061    285.3

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.