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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:54:15

Orbital Elements for MCA34AB

WDS:	MCA34AB	WDS ID/Discoverer
P:	15.119	Orbital period (years)
a:	0.111	Semi-major axis (arcseconds)
i:	76.3	Inclination (degrees)
Ω:	203.1	Longitude of ascending node (degrees)
T:	2019.163	Epoch of periastron passage (year)
e:	0.313	Eccentricity
ω:	22.6	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 MCA34AB

Position:	094725.99+113405.4	Epoch-2000 right ascension and declination
WDS-ID:	09474+1134	WDS designation
Discoverer Code:	MCA34AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	84722	HD catalog number
Hipparcos number:	48029	Hipparcos catalog number
V1:	6.4	Magnitude of the primary
V2:	6.9	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA34AB

WDS 6th Orbit including measures of MCA34AB

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

Ephemeris of MCA34AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.141     23.0
-------------------------
2018.0     0.074    195.5
2019.0     0.074    206.7
2020.0     0.042    226.5
2021.0     0.026    326.3
2022.0     0.068      5.3
2023.0     0.104     14.5
2024.0     0.128     19.4
2025.0     0.141     23.0
2026.0     0.141     26.3
2027.0     0.131     29.8
2028.0     0.112     34.2
2029.0     0.085     41.0
2030.0     0.052     55.8
2031.0     0.027    107.9

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.