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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:53:42

Orbital Elements for B780

WDS:	B780	WDS ID/Discoverer
P:	10.630	Orbital period (years)
a:	0.123	Semi-major axis (arcseconds)
i:	128.6	Inclination (degrees)
Ω:	86.1	Longitude of ascending node (degrees)
T:	2005.860	Epoch of periastron passage (year)
e:	0.338	Eccentricity
ω:	17.6	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B780

Position:	094042.60-575900.9	Epoch-2000 right ascension and declination
WDS-ID:	09407-5759	WDS designation
Discoverer Code:	B780	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	84121	HD catalog number
Hipparcos number:	47479	Hipparcos catalog number
V1:	5.85	Magnitude of the primary
V2:	6.48	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for B780

WDS 6th Orbit including measures of B780

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

Ephemeris of B780

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.077    181.3
-------------------------
2020.0     0.148    276.5
2021.0     0.162    264.2
2022.0     0.158    252.6
2023.0     0.138    239.0
2024.0     0.107    218.7
2025.0     0.077    181.3
2026.0     0.076    126.4
2027.0     0.081     80.5
2028.0     0.060     17.7
2029.0     0.087    312.7

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.