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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:24:26

Orbital Elements for HDS2054

WDS:	HDS2054	WDS ID/Discoverer
P:	66.500	Orbital period (years)
a:	0.207	Semi-major axis (arcseconds)
i:	97.5	Inclination (degrees)
Ω:	356.7	Longitude of ascending node (degrees)
T:	1997.840	Epoch of periastron passage (year)
e:	0.8	Eccentricity
ω:	116.0	Longitude of periastron (degrees)
Start-Year:	1992.0	Year
End-Year:	2058.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2054

Position:	143257.08-422419.5	Epoch-2000 right ascension and declination
WDS-ID:	14330-4224	WDS designation
Discoverer Code:	HDS2054	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	127498	HD catalog number
Hipparcos number:	71140	Hipparcos catalog number
V1:	8.39	Magnitude of the primary
V2:	8.89	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2054

WDS 6th Orbit including measures of HDS2054

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

Ephemeris of HDS2054

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.131     16.6
-------------------------
1992.0     0.159    359.1
1993.0     0.144    358.3
1994.0     0.126    357.3
1995.0     0.102    355.9
1996.0     0.071    353.5
1997.0     0.028    344.9
1998.0     0.027    185.9
1999.0     0.059    175.6
2000.0     0.070    171.4
2001.0     0.072    167.9
2002.0     0.069    164.2
2003.0     0.065    160.2
2004.0     0.059    155.5
2005.0     0.053    149.7
2006.0     0.047    142.5
2007.0     0.042    133.2
2008.0     0.037    121.5
2009.0     0.035    107.4
2010.0     0.034     91.9
2011.0     0.036     77.1
2012.0     0.040     64.4
2013.0     0.045     54.2
2014.0     0.051     46.4
2015.0     0.058     40.3
2016.0     0.065     35.5
2017.0     0.073     31.7
2018.0     0.080     28.6
2019.0     0.088     26.0
2020.0     0.095     23.9
2021.0     0.103     22.0
2022.0     0.110     20.4
2023.0     0.117     19.0
2024.0     0.124     17.7
2025.0     0.131     16.6
2026.0     0.138     15.6
2027.0     0.144     14.7
2028.0     0.151     13.9
2029.0     0.157     13.1
2030.0     0.163     12.4
2031.0     0.169     11.7
2032.0     0.174     11.1
2033.0     0.179     10.5
2034.0     0.184     10.0
2035.0     0.189      9.5
2036.0     0.193      9.0
2037.0     0.197      8.5
2038.0     0.201      8.0
2039.0     0.205      7.6
2040.0     0.208      7.2
2041.0     0.211      6.8
2042.0     0.213      6.3
2043.0     0.215      6.0
2044.0     0.217      5.6
2045.0     0.218      5.2
2046.0     0.218      4.8
2047.0     0.218      4.4
2048.0     0.218      4.0
2049.0     0.217      3.6
2050.0     0.215      3.3
2051.0     0.213      2.9
2052.0     0.210      2.5
2053.0     0.205      2.0
2054.0     0.200      1.6
2055.0     0.194      1.1
2056.0     0.186      0.6
2057.0     0.177      0.1

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.