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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:43:37

Orbital Elements for HDS357

WDS:	HDS357	WDS ID/Discoverer
P:	78.700	Orbital period (years)
a:	0.545	Semi-major axis (arcseconds)
i:	116.1	Inclination (degrees)
Ω:	160.8	Longitude of ascending node (degrees)
T:	2041.990	Epoch of periastron passage (year)
e:	0.401	Eccentricity
ω:	256.6	Longitude of periastron (degrees)
Start-Year:	1986.0	Year
End-Year:	2064.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS357

Position:	024536.86-711409.4	Epoch-2000 right ascension and declination
WDS-ID:	02456-7114	WDS designation
Discoverer Code:	HDS357	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	17653	HD catalog number
Hipparcos number:	12884	Hipparcos catalog number
V1:	6.79	Magnitude of the primary
V2:	10.56	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS357

WDS 6th Orbit including measures of HDS357

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

Ephemeris of HDS357

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.445      5.4
-------------------------
1986.0     0.556    142.1
1987.0     0.550    140.3
1988.0     0.543    138.5
1989.0     0.534    136.6
1990.0     0.525    134.6
1991.0     0.515    132.6
1992.0     0.504    130.5
1993.0     0.492    128.3
1994.0     0.480    126.0
1995.0     0.467    123.5
1996.0     0.454    120.9
1997.0     0.441    118.2
1998.0     0.428    115.3
1999.0     0.415    112.2
2000.0     0.402    108.9
2001.0     0.390    105.4
2002.0     0.379    101.7
2003.0     0.368     97.8
2004.0     0.358     93.6
2005.0     0.349     89.3
2006.0     0.342     84.7
2007.0     0.336     79.9
2008.0     0.332     75.0
2009.0     0.330     70.0
2010.0     0.329     64.9
2011.0     0.330     59.9
2012.0     0.332     54.9
2013.0     0.337     50.0
2014.0     0.342     45.2
2015.0     0.349     40.7
2016.0     0.358     36.3
2017.0     0.367     32.1
2018.0     0.377     28.1
2019.0     0.387     24.4
2020.0     0.397     20.8
2021.0     0.408     17.4
2022.0     0.418     14.2
2023.0     0.428     11.2
2024.0     0.437      8.2
2025.0     0.445      5.4
2026.0     0.452      2.7
2027.0     0.457      0.0
2028.0     0.460    357.4
2029.0     0.462    354.9
2030.0     0.460    352.3
2031.0     0.456    349.7
2032.0     0.448    347.0
2033.0     0.437    344.2
2034.0     0.421    341.2
2035.0     0.401    338.0
2036.0     0.376    334.4
2037.0     0.346    330.2
2038.0     0.311    325.1
2039.0     0.272    318.6
2040.0     0.230    309.9
2041.0     0.191    297.4
2042.0     0.159    279.0
2043.0     0.145    254.5
2044.0     0.155    229.5
2045.0     0.186    210.3
2046.0     0.226    197.2
2047.0     0.269    188.2
2048.0     0.312    181.7
2049.0     0.352    176.7
2050.0     0.388    172.7
2051.0     0.421    169.4
2052.0     0.450    166.5
2053.0     0.475    163.9
2054.0     0.497    161.6
2055.0     0.515    159.5
2056.0     0.530    157.5
2057.0     0.542    155.6
2058.0     0.551    153.8
2059.0     0.558    152.0
2060.0     0.562    150.2
2061.0     0.564    148.5
2062.0     0.564    146.8
2063.0     0.562    145.1

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.