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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:08:36

Orbital Elements for YSC136

WDS:	YSC136	WDS ID/Discoverer
P:	4.813	Orbital period (years)
a:	0.0831	Semi-major axis (arcseconds)
i:	64.3	Inclination (degrees)
Ω:	89.9	Longitude of ascending node (degrees)
T:	2010.524	Epoch of periastron passage (year)
e:	0.18	Eccentricity
ω:	261.0	Longitude of periastron (degrees)
Start-Year:	2023.0	Year
End-Year:	2027.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YSC136

Position:	194641.20+442054.7	Epoch-2000 right ascension and declination
WDS-ID:	19467+4421	WDS designation
Discoverer Code:	YSC136	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	187160	HD catalog number
Hipparcos number:	97321	Hipparcos catalog number
V1:	7.4	Magnitude of the primary
V2:	8.7	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for YSC136

WDS 6th Orbit including measures of YSC136

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

Ephemeris of YSC136

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.030    348.6
-------------------------
2023.0     0.047    211.1
2024.0     0.080    264.8
2025.0     0.030    348.6
2026.0     0.083     89.6

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.