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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:23:01

Orbital Elements for HU1399AB

WDS:	HU1399AB	WDS ID/Discoverer
P:	67.450	Orbital period (years)
a:	0.946	Semi-major axis (arcseconds)
i:	101.2	Inclination (degrees)
Ω:	126.7	Longitude of ascending node (degrees)
T:	1997.850	Epoch of periastron passage (year)
e:	0.516	Eccentricity
ω:	278.5	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 HU1399AB

Position:	060019.69-310154.0	Epoch-2000 right ascension and declination
WDS-ID:	06003-3102	WDS designation
Discoverer Code:	HU1399AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	40887	HD catalog number
Hipparcos number:	28442	Hipparcos catalog number
V1:	8.90	Magnitude of the primary
V2:	9.9	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU1399AB

WDS 6th Orbit including measures of HU1399AB

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

Ephemeris of HU1399AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.294     60.2
-------------------------
1992.0     0.655    304.2
1993.0     0.574    302.1
1994.0     0.475    299.2
1995.0     0.360    294.6
1996.0     0.231    285.1
1997.0     0.110    252.4
1998.0     0.126    170.6
1999.0     0.251    144.9
2000.0     0.376    136.6
2001.0     0.482    132.2
2002.0     0.568    129.3
2003.0     0.633    127.1
2004.0     0.681    125.3
2005.0     0.714    123.7
2006.0     0.735    122.1
2007.0     0.745    120.7
2008.0     0.746    119.3
2009.0     0.740    117.8
2010.0     0.728    116.4
2011.0     0.711    114.8
2012.0     0.690    113.2
2013.0     0.665    111.5
2014.0     0.636    109.6
2015.0     0.606    107.5
2016.0     0.574    105.3
2017.0     0.540    102.7
2018.0     0.505     99.8
2019.0     0.470     96.4
2020.0     0.435     92.5
2021.0     0.401     88.0
2022.0     0.369     82.6
2023.0     0.340     76.3
2024.0     0.314     68.8
2025.0     0.294     60.2
2026.0     0.281     50.5
2027.0     0.275     40.2
2028.0     0.278     29.8
2029.0     0.289     19.9
2030.0     0.308     10.9
2031.0     0.332      3.1
2032.0     0.360    356.4
2033.0     0.392    350.8
2034.0     0.426    346.0
2035.0     0.462    342.0
2036.0     0.498    338.5
2037.0     0.534    335.5
2038.0     0.571    332.9
2039.0     0.607    330.6
2040.0     0.642    328.6
2041.0     0.676    326.8
2042.0     0.708    325.1
2043.0     0.739    323.6
2044.0     0.768    322.2
2045.0     0.795    320.9
2046.0     0.819    319.7
2047.0     0.841    318.5
2048.0     0.859    317.4
2049.0     0.874    316.4
2050.0     0.884    315.3
2051.0     0.890    314.3
2052.0     0.892    313.3
2053.0     0.887    312.3
2054.0     0.876    311.3
2055.0     0.858    310.2
2056.0     0.831    309.1
2057.0     0.795    307.9

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.