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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:57:19

Orbital Elements for ZETSCT

WDS:	ZETSCT	WDS ID/Discoverer
P:	6.499	Orbital period (years)
a:	0.0216	Semi-major axis (arcseconds)
i:	89.0	Inclination (degrees)
Ω:	226.0	Longitude of ascending node (degrees)
T:	1908.920	Epoch of periastron passage (year)
e:	0.1	Eccentricity
ω:	242.1	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 ZETSCT

Position:	182339.55-085604.2	Epoch-2000 right ascension and declination
WDS-ID:	18237-0856	WDS designation
Discoverer Code:	ZETSCT	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	169156	HD catalog number
Hipparcos number:	90135	Hipparcos catalog number
V1:	4.67	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1992	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for ZETSCT

WDS 6th Orbit including measures of ZETSCT

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

Ephemeris of ZETSCT

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.020     46.0
-------------------------
2022.0     0.020    226.6
2023.0     0.005    230.7
2024.0     0.013     44.6
2025.0     0.020     46.0
2026.0     0.007     48.6
2027.0     0.014    224.9

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.