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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:55:10

Orbital Elements for HDS495

WDS:	HDS495	WDS ID/Discoverer
P:	50.000	Orbital period (years)
a:	0.207	Semi-major axis (arcseconds)
i:	130.6	Inclination (degrees)
Ω:	230.9	Longitude of ascending node (degrees)
T:	1991.680	Epoch of periastron passage (year)
e:	0.093	Eccentricity
ω:	313.5	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 HDS495

Position:	035536.30-261254.1	Epoch-2000 right ascension and declination
WDS-ID:	03556-2613	WDS designation
Discoverer Code:	HDS495	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	24798	HD catalog number
Hipparcos number:	18364	Hipparcos catalog number
V1:	7.79	Magnitude of the primary
V2:	10.40	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS495

WDS 6th Orbit including measures of HDS495

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

Ephemeris of HDS495

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.217     47.8
-------------------------
2000.0     0.190    215.4
2001.0     0.185    209.7
2002.0     0.180    203.7
2003.0     0.173    197.2
2004.0     0.166    190.3
2005.0     0.159    182.7
2006.0     0.153    174.4
2007.0     0.148    165.6
2008.0     0.144    156.2
2009.0     0.143    146.4
2010.0     0.144    136.7
2011.0     0.147    127.2
2012.0     0.152    118.3
2013.0     0.159    110.0
2014.0     0.166    102.4
2015.0     0.175     95.5
2016.0     0.183     89.3
2017.0     0.191     83.6
2018.0     0.199     78.3
2019.0     0.206     73.5
2020.0     0.212     68.9
2021.0     0.216     64.5
2022.0     0.219     60.3
2023.0     0.220     56.1
2024.0     0.220     52.0
2025.0     0.217     47.8
2026.0     0.214     43.5
2027.0     0.208     39.0
2028.0     0.201     34.2
2029.0     0.192     29.1
2030.0     0.182     23.3
2031.0     0.171     16.9
2032.0     0.160      9.6
2033.0     0.149      1.2
2034.0     0.139    351.6
2035.0     0.131    340.7
2036.0     0.126    328.6
2037.0     0.125    315.9
2038.0     0.127    303.2
2039.0     0.133    291.3
2040.0     0.141    280.6
2041.0     0.150    271.1
2042.0     0.160    262.8
2043.0     0.169    255.4
2044.0     0.178    248.8
2045.0     0.185    242.7
2046.0     0.190    237.0
2047.0     0.193    231.5
2048.0     0.194    226.2
2049.0     0.193    220.8

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.