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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:35:31

Orbital Elements for HDS2265

WDS:	HDS2265	WDS ID/Discoverer
P:	50.430	Orbital period (years)
a:	0.335	Semi-major axis (arcseconds)
i:	59.3	Inclination (degrees)
Ω:	177.7	Longitude of ascending node (degrees)
T:	2021.182	Epoch of periastron passage (year)
e:	0.841	Eccentricity
ω:	344.1	Longitude of periastron (degrees)
Start-Year:	2000.0	Year
End-Year:	2050.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2265

Position:	160349.23+140629.8	Epoch-2000 right ascension and declination
WDS-ID:	16038+1406	WDS designation
Discoverer Code:	HDS2265	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	78688	Hipparcos catalog number
V1:	9.34	Magnitude of the primary
V2:	12.23	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2265

WDS 6th Orbit including measures of HDS2265

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

Ephemeris of HDS2265

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.172    317.5
-------------------------
2000.0     0.598    351.9
2001.0     0.593    352.5
2002.0     0.588    353.2
2003.0     0.581    353.8
2004.0     0.572    354.5
2005.0     0.561    355.2
2006.0     0.549    355.9
2007.0     0.535    356.6
2008.0     0.519    357.4
2009.0     0.500    358.3
2010.0     0.480    359.2
2011.0     0.457      0.2
2012.0     0.432      1.3
2013.0     0.404      2.6
2014.0     0.372      4.1
2015.0     0.337      5.8
2016.0     0.297      8.0
2017.0     0.252     11.0
2018.0     0.201     15.3
2019.0     0.141     23.1
2020.0     0.072     44.7
2021.0     0.045    152.4
2022.0     0.054    229.8
2023.0     0.081    285.6
2024.0     0.127    307.3
2025.0     0.172    317.5
2026.0     0.215    323.4
2027.0     0.254    327.4
2028.0     0.291    330.4
2029.0     0.324    332.8
2030.0     0.355    334.7
2031.0     0.383    336.3
2032.0     0.410    337.7
2033.0     0.434    339.0
2034.0     0.456    340.1
2035.0     0.477    341.1
2036.0     0.496    342.0
2037.0     0.513    342.9
2038.0     0.528    343.7
2039.0     0.542    344.5
2040.0     0.554    345.2
2041.0     0.565    345.9
2042.0     0.575    346.6
2043.0     0.583    347.3
2044.0     0.589    347.9
2045.0     0.595    348.6
2046.0     0.598    349.2
2047.0     0.601    349.8
2048.0     0.601    350.4
2049.0     0.601    351.0

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.