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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:57:53

Orbital Elements for BD+263279

WDS:	BD+263279	WDS ID/Discoverer
P:	3.515	Orbital period (years)
a:	0.0091	Semi-major axis (arcseconds)
i:	142.1	Inclination (degrees)
Ω:	353.1	Longitude of ascending node (degrees)
T:	1976.402	Epoch of periastron passage (year)
e:	0.5	Eccentricity
ω:	56.0	Longitude of periastron (degrees)
Start-Year:	2024.0	Year
End-Year:	2026.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BD+263279

Position:	182954.05+263926.7	Epoch-2000 right ascension and declination
WDS-ID:	18299+2639	WDS designation
Discoverer Code:	BD+263279	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	170737	HD catalog number
Hipparcos number:	90659	Hipparcos catalog number
V1:	8.13	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1992	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BD+263279

WDS 6th Orbit including measures of BD+263279

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

Ephemeris of BD+263279

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.008     53.3
-------------------------
2024.0     0.011    117.6
2025.0     0.008     53.3

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.