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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:38:50

Orbital Elements for HDS2327

WDS:	HDS2327	WDS ID/Discoverer
P:	34.870	Orbital period (years)
a:	0.165	Semi-major axis (arcseconds)
i:	131.4	Inclination (degrees)
Ω:	21.0	Longitude of ascending node (degrees)
T:	2018.190	Epoch of periastron passage (year)
e:	0.309	Eccentricity
ω:	110.1	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2327

Position:	162748.96-411829.8	Epoch-2000 right ascension and declination
WDS-ID:	16278-4118	WDS designation
Discoverer Code:	HDS2327	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	148138	HD catalog number
Hipparcos number:	80629	Hipparcos catalog number
V1:	8.42	Magnitude of the primary
V2:	10.22	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2327

WDS 6th Orbit including measures of HDS2327

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

Ephemeris of HDS2327

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.146    175.2
-------------------------
2008.0     0.181     38.0
2009.0     0.179     32.5
2010.0     0.174     26.9
2011.0     0.167     20.8
2012.0     0.156     14.0
2013.0     0.142      6.1
2014.0     0.125    356.1
2015.0     0.106    342.7
2016.0     0.088    323.6
2017.0     0.077    297.1
2018.0     0.079    267.3
2019.0     0.092    242.6
2020.0     0.109    224.9
2021.0     0.123    211.8
2022.0     0.135    201.2
2023.0     0.142    192.0
2024.0     0.145    183.5
2025.0     0.146    175.2
2026.0     0.145    166.9
2027.0     0.143    158.4
2028.0     0.141    149.6
2029.0     0.139    140.6
2030.0     0.138    131.3
2031.0     0.137    121.9
2032.0     0.139    112.6
2033.0     0.141    103.6
2034.0     0.145     95.0
2035.0     0.150     86.8
2036.0     0.155     79.3
2037.0     0.161     72.2
2038.0     0.167     65.6
2039.0     0.172     59.5
2040.0     0.176     53.6
2041.0     0.180     48.1

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.