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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:20:03

Orbital Elements for BD+252689

WDS:	BD+252689	WDS ID/Discoverer
P:	1.915	Orbital period (years)
a:	0.0032	Semi-major axis (arcseconds)
i:	76.1	Inclination (degrees)
Ω:	67.7	Longitude of ascending node (degrees)
T:	1977.650	Epoch of periastron passage (year)
e:	0.4	Eccentricity
ω:	270.9	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BD+252689

Position:	135116.31+244144.2	Epoch-2000 right ascension and declination
WDS-ID:	13513+2442	WDS designation
Discoverer Code:	BD+252689	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	120803	HD catalog number
Hipparcos number:	67615	Hipparcos catalog number
V1:	7.59	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BD+252689

WDS 6th Orbit including measures of BD+252689

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

Ephemeris of BD+252689

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.003    233.9
-------------------------

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.