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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:28:24

Orbital Elements for YSC8AB

WDS:	YSC8AB	WDS ID/Discoverer
P:	6.924	Orbital period (years)
a:	0.11654	Semi-major axis (arcseconds)
i:	96.22	Inclination (degrees)
Ω:	149.1	Longitude of ascending node (degrees)
T:	1989.184	Epoch of periastron passage (year)
e:	0.3795	Eccentricity
ω:	99.58	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 YSC8AB

Position:	150034.99+083600.5	Epoch-2000 right ascension and declination
WDS-ID:	15006+0836	WDS designation
Discoverer Code:	YSC8AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	132756	HD catalog number
Hipparcos number:	73449	Hipparcos catalog number
V1:	7.5	Magnitude of the primary
V2:	9.4	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for YSC8AB

WDS 6th Orbit including measures of YSC8AB

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

Ephemeris of YSC8AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.101    326.1
-------------------------
2022.0     0.113    153.1
2023.0     0.091    147.2
2024.0     0.042    338.3
2025.0     0.101    326.1
2026.0     0.062    315.8
2027.0     0.019    214.5

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.