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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:06:11

Orbital Elements for YSC43AA,AB

WDS:	YSC43AA,AB	WDS ID/Discoverer
P:	10.970	Orbital period (years)
a:	0.0666	Semi-major axis (arcseconds)
i:	101.3	Inclination (degrees)
Ω:	351.8	Longitude of ascending node (degrees)
T:	2005.440	Epoch of periastron passage (year)
e:	0.522	Eccentricity
ω:	77.2	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YSC43AA,AB

Position:	113409.95+110125.9	Epoch-2000 right ascension and declination
WDS-ID:	11342+1101	WDS designation
Discoverer Code:	YSC43AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	100518	HD catalog number
Hipparcos number:	56429	Hipparcos catalog number
V1:	6.9	Magnitude of the primary
V2:	8.2	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for YSC43AA,AB

WDS 6th Orbit including measures of YSC43AA,AB

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

Ephemeris of YSC43AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.043      8.9
-------------------------
2020.0     0.058    157.3
2021.0     0.044    147.8
2022.0     0.028    128.0
2023.0     0.019     77.6
2024.0     0.029     28.6
2025.0     0.043      8.9
2026.0     0.050    358.1
2027.0     0.029    344.4
2028.0     0.032    180.4
2029.0     0.061    169.3

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.