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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:59:31

Orbital Elements for YSC133

WDS:	YSC133	WDS ID/Discoverer
P:	7.235	Orbital period (years)
a:	0.08009000000000001	Semi-major axis (arcseconds)
i:	104.55	Inclination (degrees)
Ω:	286.62	Longitude of ascending node (degrees)
T:	2010.748	Epoch of periastron passage (year)
e:	0.6109	Eccentricity
ω:	254.98	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 YSC133

Position:	184351.22-064904.8	Epoch-2000 right ascension and declination
WDS-ID:	18439-0649	WDS designation
Discoverer Code:	YSC133	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	173093	HD catalog number
Hipparcos number:	91880	Hipparcos catalog number
V1:	6.7	Magnitude of the primary
V2:	7.6	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for YSC133

WDS 6th Orbit including measures of YSC133

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

Ephemeris of YSC133

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.033    100.2
-------------------------
2022.0     0.037    228.6
2023.0     0.033    167.5
2024.0     0.050    127.7
2025.0     0.033    100.2
2026.0     0.065    284.8
2027.0     0.078    273.5

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.