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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:38:31

Orbital Elements for HU115

WDS:	HU115	WDS ID/Discoverer
P:	63.270	Orbital period (years)
a:	0.84135	Semi-major axis (arcseconds)
i:	49.965	Inclination (degrees)
Ω:	139.713	Longitude of ascending node (degrees)
T:	1935.969	Epoch of periastron passage (year)
e:	0.68514	Eccentricity
ω:	172.235	Longitude of periastron (degrees)
Start-Year:	1994.0	Year
End-Year:	2056.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU115

Position:	081308.47-135500.8	Epoch-2000 right ascension and declination
WDS-ID:	08132-1354	WDS designation
Discoverer Code:	HU115	Discover designation and components
ADS number:	6664	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	40239	Hipparcos catalog number
V1:	10.18	Magnitude of the primary
V2:	10.44	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU115

WDS 6th Orbit including measures of HU115

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

Ephemeris of HU115

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.350    128.9
-------------------------
1994.0     0.451    187.8
1995.0     0.369    199.2
1996.0     0.294    216.7
1997.0     0.244    243.6
1998.0     0.237    277.3
1999.0     0.259    308.1
2000.0     0.268    334.9
2001.0     0.265      1.5
2002.0     0.277     27.6
2003.0     0.316     49.5
2004.0     0.373     65.6
2005.0     0.440     77.1
2006.0     0.510     85.5
2007.0     0.579     91.9
2008.0     0.647     97.0
2009.0     0.713    101.0
2010.0     0.775    104.5
2011.0     0.834    107.4
2012.0     0.890    109.9
2013.0     0.943    112.2
2014.0     0.993    114.2
2015.0     1.040    116.0
2016.0     1.083    117.7
2017.0     1.124    119.2
2018.0     1.162    120.7
2019.0     1.197    122.0
2020.0     1.229    123.3
2021.0     1.259    124.5
2022.0     1.285    125.7
2023.0     1.310    126.8
2024.0     1.331    127.9
2025.0     1.350    128.9
2026.0     1.366    130.0
2027.0     1.380    131.0
2028.0     1.392    131.9
2029.0     1.400    132.9
2030.0     1.407    133.9
2031.0     1.411    134.8
2032.0     1.412    135.8
2033.0     1.411    136.7
2034.0     1.407    137.7
2035.0     1.400    138.6
2036.0     1.391    139.6
2037.0     1.380    140.6
2038.0     1.365    141.6
2039.0     1.348    142.6
2040.0     1.329    143.7
2041.0     1.306    144.7
2042.0     1.281    145.9
2043.0     1.252    147.0
2044.0     1.221    148.3
2045.0     1.186    149.6
2046.0     1.148    151.0
2047.0     1.106    152.5
2048.0     1.061    154.1
2049.0     1.013    155.8
2050.0     0.960    157.8
2051.0     0.904    159.9
2052.0     0.843    162.4
2053.0     0.778    165.3
2054.0     0.708    168.7
2055.0     0.634    172.9

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.