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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:59:24

Orbital Elements for BUG7

WDS:	BUG7	WDS ID/Discoverer
P:	12.300	Orbital period (years)
a:	0.1626	Semi-major axis (arcseconds)
i:	65.2	Inclination (degrees)
Ω:	34.33	Longitude of ascending node (degrees)
T:	2020.349	Epoch of periastron passage (year)
e:	0.27	Eccentricity
ω:	97.5	Longitude of periastron (degrees)
Start-Year:	2019.0	Year
End-Year:	2031.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BUG7

Position:	042348.58-041403.5	Epoch-2000 right ascension and declination
WDS-ID:	04238-0414	WDS designation
Discoverer Code:	BUG7	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	15.80	Magnitude of the primary
V2:	16.33	Magnitude of the secondary
Equinox:		Equinox
Date:	2010	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BUG7

WDS 6th Orbit including measures of BUG7

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

Ephemeris of BUG7

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.103    264.3
-------------------------
2019.0     0.118     49.3
2020.0     0.054     99.8
2021.0     0.090    188.6
2022.0     0.141    211.9
2023.0     0.151    225.9
2024.0     0.132    241.2
2025.0     0.103    264.3
2026.0     0.086    301.3
2027.0     0.101    339.2
2028.0     0.132      2.9
2029.0     0.157     17.7
2030.0     0.162     29.7

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.