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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:10:38

Orbital Elements for BD-173602

WDS:	BD-173602	WDS ID/Discoverer
P:	3.696	Orbital period (years)
a:	0.009949999999999999	Semi-major axis (arcseconds)
i:	123.3	Inclination (degrees)
Ω:	264.1	Longitude of ascending node (degrees)
T:	1985.756	Epoch of periastron passage (year)
e:	0.081	Eccentricity
ω:	124.1	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-173602

Position:	122151.95-182400.2	Epoch-2000 right ascension and declination
WDS-ID:	12219-1824	WDS designation
Discoverer Code:	BD-173602	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	107574	HD catalog number
Hipparcos number:	60299	Hipparcos catalog number
V1:	8.55	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1993	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for BD-173602

WDS 6th Orbit including measures of BD-173602

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

Ephemeris of BD-173602

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.010    275.0
-------------------------
2024.0     0.006     18.3
2025.0     0.010    275.0

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.