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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:30:50

Orbital Elements for HU774

WDS:	HU774	WDS ID/Discoverer
P:	85.560	Orbital period (years)
a:	0.138	Semi-major axis (arcseconds)
i:	20.8	Inclination (degrees)
Ω:	98.8	Longitude of ascending node (degrees)
T:	2046.060	Epoch of periastron passage (year)
e:	0.528	Eccentricity
ω:	254.2	Longitude of periastron (degrees)
Start-Year:	1983.0	Year
End-Year:	2067.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU774

Position:	215941.89+490723.4	Epoch-2000 right ascension and declination
WDS-ID:	21597+4907	WDS designation
Discoverer Code:	HU774	Discover designation and components
ADS number:	15530	Aitken Double Star catalog
HD number:	209103	HD catalog number
Hipparcos number:	108577	Hipparcos catalog number
V1:	8.36	Magnitude of the primary
V2:	8.45	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU774

WDS 6th Orbit including measures of HU774

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

Ephemeris of HU774

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.160    212.8
-------------------------
1983.0     0.171    136.0
1984.0     0.174    138.1
1985.0     0.177    140.2
1986.0     0.179    142.2
1987.0     0.182    144.2
1988.0     0.184    146.1
1989.0     0.186    148.0
1990.0     0.188    149.8
1991.0     0.190    151.6
1992.0     0.191    153.3
1993.0     0.193    155.0
1994.0     0.194    156.7
1995.0     0.195    158.4
1996.0     0.196    160.1
1997.0     0.197    161.8
1998.0     0.197    163.4
1999.0     0.198    165.0
2000.0     0.198    166.6
2001.0     0.198    168.3
2002.0     0.198    169.9
2003.0     0.198    171.5
2004.0     0.198    173.1
2005.0     0.198    174.8
2006.0     0.197    176.4
2007.0     0.196    178.0
2008.0     0.196    179.7
2009.0     0.195    181.4
2010.0     0.194    183.0
2011.0     0.192    184.7
2012.0     0.191    186.5
2013.0     0.190    188.2
2014.0     0.188    190.0
2015.0     0.186    191.8
2016.0     0.184    193.7
2017.0     0.182    195.6
2018.0     0.180    197.5
2019.0     0.178    199.5
2020.0     0.175    201.5
2021.0     0.173    203.6
2022.0     0.170    205.8
2023.0     0.167    208.1
2024.0     0.164    210.4
2025.0     0.160    212.8
2026.0     0.157    215.3
2027.0     0.153    218.0
2028.0     0.150    220.8
2029.0     0.146    223.7
2030.0     0.141    226.8
2031.0     0.137    230.1
2032.0     0.133    233.6
2033.0     0.128    237.3
2034.0     0.123    241.4
2035.0     0.118    245.8
2036.0     0.112    250.6
2037.0     0.107    255.9
2038.0     0.101    261.8
2039.0     0.095    268.4
2040.0     0.089    275.9
2041.0     0.083    284.4
2042.0     0.077    294.3
2043.0     0.072    305.9
2044.0     0.067    319.2
2045.0     0.063    334.4
2046.0     0.061    350.9
2047.0     0.062      7.9
2048.0     0.064     24.1
2049.0     0.068     38.6
2050.0     0.074     51.2
2051.0     0.080     61.9
2052.0     0.087     70.9
2053.0     0.094     78.7
2054.0     0.101     85.5
2055.0     0.107     91.4
2056.0     0.113     96.6
2057.0     0.119    101.3
2058.0     0.125    105.5
2059.0     0.131    109.4
2060.0     0.136    113.0
2061.0     0.141    116.3
2062.0     0.146    119.4
2063.0     0.150    122.3
2064.0     0.154    125.0
2065.0     0.158    127.7
2066.0     0.162    130.1

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.