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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:00:46

Orbital Elements for HDS576

WDS:	HDS576	WDS ID/Discoverer
P:	47.500	Orbital period (years)
a:	0.282	Semi-major axis (arcseconds)
i:	78.0	Inclination (degrees)
Ω:	111.4	Longitude of ascending node (degrees)
T:	1994.762	Epoch of periastron passage (year)
e:	0.762	Eccentricity
ω:	275.7	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS576

Position:	042839.78+261312.6	Epoch-2000 right ascension and declination
WDS-ID:	04287+2613	WDS designation
Discoverer Code:	HDS576	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	20895	Hipparcos catalog number
V1:	11.70	Magnitude of the primary
V2:	11.97	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2020	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS576

WDS 6th Orbit including measures of HDS576

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

Ephemeris of HDS576

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.162    256.0
-------------------------
2002.0     0.165    131.4
2003.0     0.160    134.5
2004.0     0.155    137.8
2005.0     0.148    141.3
2006.0     0.142    145.2
2007.0     0.135    149.4
2008.0     0.128    154.2
2009.0     0.121    159.4
2010.0     0.115    165.3
2011.0     0.110    171.7
2012.0     0.106    178.7
2013.0     0.103    186.2
2014.0     0.102    194.0
2015.0     0.102    201.8
2016.0     0.104    209.6
2017.0     0.107    216.9
2018.0     0.111    223.8
2019.0     0.117    230.0
2020.0     0.123    235.6
2021.0     0.131    240.7
2022.0     0.138    245.2
2023.0     0.146    249.2
2024.0     0.154    252.8
2025.0     0.162    256.0
2026.0     0.170    259.0
2027.0     0.178    261.6
2028.0     0.185    264.1
2029.0     0.192    266.4
2030.0     0.198    268.5
2031.0     0.203    270.5
2032.0     0.207    272.5
2033.0     0.210    274.3
2034.0     0.212    276.1
2035.0     0.211    277.9
2036.0     0.208    279.8
2037.0     0.201    281.7
2038.0     0.190    283.8
2039.0     0.173    286.3
2040.0     0.145    289.5
2041.0     0.100    294.9
2042.0     0.024    326.4
2043.0     0.073    104.8
2044.0     0.123    113.4
2045.0     0.148    117.8
2046.0     0.161    121.1
2047.0     0.166    124.2

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.