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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:04

Orbital Elements for HDS1499

WDS:	HDS1499	WDS ID/Discoverer
P:	13.390	Orbital period (years)
a:	0.073	Semi-major axis (arcseconds)
i:	47.0	Inclination (degrees)
Ω:	101.6	Longitude of ascending node (degrees)
T:	2022.271	Epoch of periastron passage (year)
e:	0.7	Eccentricity
ω:	178.2	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 HDS1499

Position:	102532.95-650358.6	Epoch-2000 right ascension and declination
WDS-ID:	10255-6504	WDS designation
Discoverer Code:	HDS1499	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	307760	HD catalog number
Hipparcos number:	51031	Hipparcos catalog number
V1:	9.81	Magnitude of the primary
V2:	11.39	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2023	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1499

WDS 6th Orbit including measures of HDS1499

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

Ephemeris of HDS1499

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.083     76.8
-------------------------
2019.0     0.095    118.8
2020.0     0.074    128.6
2021.0     0.045    149.0
2022.0     0.021    239.2
2023.0     0.028     18.8
2024.0     0.058     62.6
2025.0     0.083     76.8
2026.0     0.102     85.0
2027.0     0.114     90.9
2028.0     0.122     95.9
2029.0     0.124    100.5
2030.0     0.122    105.1

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.