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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:04:09

Orbital Elements for BD+163774

WDS:	BD+163774	WDS ID/Discoverer
P:	7.012	Orbital period (years)
a:	0.0339	Semi-major axis (arcseconds)
i:	135.5	Inclination (degrees)
Ω:	126.9	Longitude of ascending node (degrees)
T:	1971.252	Epoch of periastron passage (year)
e:	0.19	Eccentricity
ω:	103.0	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BD+163774

Position:	191227.46+165102.2	Epoch-2000 right ascension and declination
WDS-ID:	19126+1651	WDS designation
Discoverer Code:	BD+163774	Discover designation and components
ADS number:	12160	Aitken Double Star catalog
HD number:	179558	HD catalog number
Hipparcos number:	94371	Hipparcos catalog number
V1:	7.94	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:		Flags

Double Star Orbit for BD+163774

WDS 6th Orbit including measures of BD+163774

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

Ephemeris of BD+163774

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.035    152.6
-------------------------
2022.0     0.032    284.4
2023.0     0.029    240.8
2024.0     0.030    191.5
2025.0     0.035    152.6
2026.0     0.032    118.1
2027.0     0.020     55.2

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.