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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:39

Orbital Elements for HDS1507

WDS:	HDS1507	WDS ID/Discoverer
P:	15.590	Orbital period (years)
a:	0.0984	Semi-major axis (arcseconds)
i:	24.6	Inclination (degrees)
Ω:	277.0	Longitude of ascending node (degrees)
T:	2011.790	Epoch of periastron passage (year)
e:	0.372	Eccentricity
ω:	286.3	Longitude of periastron (degrees)
Start-Year:	2018.0	Year
End-Year:	2032.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1507

Position:	102925.66+121113.3	Epoch-2000 right ascension and declination
WDS-ID:	10294+1211	WDS designation
Discoverer Code:	HDS1507	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	90823	HD catalog number
Hipparcos number:	51360	Hipparcos catalog number
V1:	7.69	Magnitude of the primary
V2:	8.76	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1507

WDS 6th Orbit including measures of HDS1507

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

Ephemeris of HDS1507

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.089    104.7
-------------------------
2018.0     0.119      4.7
2019.0     0.123     17.6
2020.0     0.124     29.9
2021.0     0.123     42.2
2022.0     0.120     54.9
2023.0     0.114     68.6
2024.0     0.104     84.5
2025.0     0.089    104.7
2026.0     0.071    134.4
2027.0     0.057    182.5
2028.0     0.062    238.7
2029.0     0.077    278.1
2030.0     0.091    304.8
2031.0     0.102    325.1

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.