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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:05:15

Orbital Elements for YSC145

WDS:	YSC145	WDS ID/Discoverer
P:	12.526	Orbital period (years)
a:	0.0576	Semi-major axis (arcseconds)
i:	130.1	Inclination (degrees)
Ω:	116.6	Longitude of ascending node (degrees)
T:	2019.499	Epoch of periastron passage (year)
e:	0.087	Eccentricity
ω:	182.3	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 YSC145

Position:	045700.11+735022.1	Epoch-2000 right ascension and declination
WDS-ID:	04570+7350	WDS designation
Discoverer Code:	YSC145	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	23016	Hipparcos catalog number
V1:	9.9	Magnitude of the primary
V2:	10.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for YSC145

WDS 6th Orbit including measures of YSC145

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

Ephemeris of YSC145

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.061    127.2
-------------------------
2019.0     0.052    306.3
2020.0     0.051    283.8
2021.0     0.043    256.3
2022.0     0.037    216.0
2023.0     0.042    173.9
2024.0     0.053    146.0
2025.0     0.061    127.2
2026.0     0.062    111.4
2027.0     0.056     94.2
2028.0     0.046     70.7
2029.0     0.037     33.7
2030.0     0.040    350.5

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.