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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:50:23

Orbital Elements for HU432

WDS:	HU432	WDS ID/Discoverer
P:	73.670	Orbital period (years)
a:	0.2017	Semi-major axis (arcseconds)
i:	40.4	Inclination (degrees)
Ω:	45.4	Longitude of ascending node (degrees)
T:	1979.230	Epoch of periastron passage (year)
e:	0.152	Eccentricity
ω:	223.2	Longitude of periastron (degrees)
Start-Year:	1989.0	Year
End-Year:	2061.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU432

Position:	031745.24-140646.6	Epoch-2000 right ascension and declination
WDS-ID:	03178-1407	WDS designation
Discoverer Code:	HU432	Discover designation and components
ADS number:	2456	Aitken Double Star catalog
HD number:	20530	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.4	Magnitude of the primary
V2:	10.4	Magnitude of the secondary
Equinox:		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 HU432

WDS 6th Orbit including measures of HU432

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

Ephemeris of HU432

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.175    117.7
-------------------------
1989.0     0.144    335.5
1990.0     0.149    342.5
1991.0     0.154    349.0
1992.0     0.160    355.1
1993.0     0.167      0.7
1994.0     0.173      5.9
1995.0     0.179     10.7
1996.0     0.186     15.2
1997.0     0.192     19.4
1998.0     0.197     23.3
1999.0     0.203     27.1
2000.0     0.207     30.6
2001.0     0.211     34.1
2002.0     0.215     37.4
2003.0     0.218     40.5
2004.0     0.220     43.7
2005.0     0.222     46.7
2006.0     0.224     49.7
2007.0     0.224     52.7
2008.0     0.224     55.7
2009.0     0.224     58.6
2010.0     0.223     61.6
2011.0     0.222     64.7
2012.0     0.220     67.7
2013.0     0.217     70.9
2014.0     0.215     74.1
2015.0     0.212     77.4
2016.0     0.208     80.7
2017.0     0.205     84.2
2018.0     0.201     87.9
2019.0     0.197     91.6
2020.0     0.193     95.6
2021.0     0.190     99.6
2022.0     0.186    103.9
2023.0     0.182    108.3
2024.0     0.179    112.9
2025.0     0.175    117.7
2026.0     0.173    122.7
2027.0     0.170    127.8
2028.0     0.168    133.0
2029.0     0.167    138.3
2030.0     0.166    143.7
2031.0     0.165    149.2
2032.0     0.166    154.7
2033.0     0.166    160.1
2034.0     0.167    165.5
2035.0     0.168    170.8
2036.0     0.170    176.1
2037.0     0.172    181.2
2038.0     0.174    186.2
2039.0     0.175    191.1
2040.0     0.177    195.9
2041.0     0.178    200.7
2042.0     0.179    205.3
2043.0     0.180    210.0
2044.0     0.180    214.6
2045.0     0.179    219.3
2046.0     0.178    223.9
2047.0     0.176    228.7
2048.0     0.173    233.6
2049.0     0.170    238.7
2050.0     0.166    244.0
2051.0     0.162    249.5
2052.0     0.158    255.4
2053.0     0.153    261.6
2054.0     0.148    268.2
2055.0     0.144    275.2
2056.0     0.140    282.6
2057.0     0.137    290.4
2058.0     0.136    298.5
2059.0     0.135    306.6
2060.0     0.136    314.8

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.