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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:49:09

Orbital Elements for DUQ1AA,AB

WDS:	DUQ1AA,AB	WDS ID/Discoverer
P:	7.005	Orbital period (years)
a:	0.1737	Semi-major axis (arcseconds)
i:	42.8	Inclination (degrees)
Ω:	309.2	Longitude of ascending node (degrees)
T:	1994.190	Epoch of periastron passage (year)
e:	0.936	Eccentricity
ω:	129.6	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DUQ1AA,AB

Position:	174315.64+213633.1	Epoch-2000 right ascension and declination
WDS-ID:	17433+2137	WDS designation
Discoverer Code:	DUQ1AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	161198	HD catalog number
Hipparcos number:	86722	Hipparcos catalog number
V1:	7.50	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1994	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for DUQ1AA,AB

WDS 6th Orbit including measures of DUQ1AA,AB

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

Ephemeris of DUQ1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.274    264.0
-------------------------
2022.0     0.078    300.8
2023.0     0.143    246.1
2024.0     0.229    257.8
2025.0     0.274    264.0
2026.0     0.287    269.0
2027.0     0.270    274.1

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.