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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:33:14

Orbital Elements for HDS3173

WDS:	HDS3173	WDS ID/Discoverer
P:	82.000	Orbital period (years)
a:	0.171	Semi-major axis (arcseconds)
i:	142.7	Inclination (degrees)
Ω:	196.7	Longitude of ascending node (degrees)
T:	2016.320	Epoch of periastron passage (year)
e:	0.327	Eccentricity
ω:	189.0	Longitude of periastron (degrees)
Start-Year:	1984.0	Year
End-Year:	2066.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3173

Position:	222324.44-432423.3	Epoch-2000 right ascension and declination
WDS-ID:	22234-4324	WDS designation
Discoverer Code:	HDS3173	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	212208	HD catalog number
Hipparcos number:	110519	Hipparcos catalog number
V1:	9.07	Magnitude of the primary
V2:	10.02	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS3173

WDS 6th Orbit including measures of HDS3173

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

Ephemeris of HDS3173

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.110    300.3
-------------------------
1984.0     0.210    172.1
1985.0     0.206    169.9
1986.0     0.203    167.6
1987.0     0.199    165.2
1988.0     0.195    162.7
1989.0     0.191    160.1
1990.0     0.186    157.4
1991.0     0.182    154.6
1992.0     0.177    151.6
1993.0     0.172    148.4
1994.0     0.167    145.0
1995.0     0.162    141.5
1996.0     0.157    137.7
1997.0     0.152    133.6
1998.0     0.147    129.3
1999.0     0.142    124.7
2000.0     0.138    119.8
2001.0     0.133    114.5
2002.0     0.129    108.9
2003.0     0.126    103.0
2004.0     0.123     96.7
2005.0     0.120     90.2
2006.0     0.118     83.4
2007.0     0.117     76.5
2008.0     0.116     69.4
2009.0     0.116     62.2
2010.0     0.116     55.0
2011.0     0.116     47.8
2012.0     0.116     40.6
2013.0     0.116     33.5
2014.0     0.116     26.3
2015.0     0.116     19.1
2016.0     0.115     11.9
2017.0     0.114      4.5
2018.0     0.112    356.9
2019.0     0.111    349.2
2020.0     0.110    341.3
2021.0     0.108    333.1
2022.0     0.108    324.9
2023.0     0.108    316.6
2024.0     0.109    308.4
2025.0     0.110    300.3
2026.0     0.113    292.6
2027.0     0.116    285.2
2028.0     0.120    278.3
2029.0     0.125    271.9
2030.0     0.130    266.0
2031.0     0.136    260.5
2032.0     0.141    255.5
2033.0     0.147    250.8
2034.0     0.153    246.5
2035.0     0.159    242.6
2036.0     0.165    238.9
2037.0     0.170    235.4
2038.0     0.176    232.2
2039.0     0.181    229.2
2040.0     0.186    226.3
2041.0     0.191    223.6
2042.0     0.196    221.0
2043.0     0.200    218.6
2044.0     0.204    216.2
2045.0     0.208    213.9
2046.0     0.211    211.7
2047.0     0.214    209.6
2048.0     0.217    207.5
2049.0     0.219    205.5
2050.0     0.221    203.5
2051.0     0.223    201.5
2052.0     0.224    199.6
2053.0     0.225    197.7
2054.0     0.226    195.8
2055.0     0.226    193.9
2056.0     0.226    192.0
2057.0     0.226    190.1
2058.0     0.225    188.2
2059.0     0.225    186.3
2060.0     0.223    184.4
2061.0     0.222    182.5
2062.0     0.220    180.5
2063.0     0.218    178.5
2064.0     0.215    176.4
2065.0     0.213    174.3

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.