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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:34:34

Orbital Elements for YSC20

WDS:	YSC20	WDS ID/Discoverer
P:	13.610	Orbital period (years)
a:	0.1255	Semi-major axis (arcseconds)
i:	22.9	Inclination (degrees)
Ω:	192.0	Longitude of ascending node (degrees)
T:	2010.705	Epoch of periastron passage (year)
e:	0.4529	Eccentricity
ω:	248.0	Longitude of periastron (degrees)
Start-Year:	2019.0	Year
End-Year:	2031.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for YSC20

Position:	021640.57+063145.6	Epoch-2000 right ascension and declination
WDS-ID:	02167+0632	WDS designation
Discoverer Code:	YSC20	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	14070	HD catalog number
Hipparcos number:	10616	Hipparcos catalog number
V1:	9.5	Magnitude of the primary
V2:	11.9	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for YSC20

WDS 6th Orbit including measures of YSC20

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

Ephemeris of YSC20

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.072    131.8
-------------------------
2019.0     0.162    276.6
2020.0     0.152    290.5
2021.0     0.137    306.9
2022.0     0.118    328.0
2023.0     0.094    358.8
2024.0     0.068     53.3
2025.0     0.072    131.8
2026.0     0.104    177.4
2027.0     0.132    202.0
2028.0     0.151    219.0
2029.0     0.163    232.8
2030.0     0.169    245.1

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.