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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:22:13

Orbital Elements for HDS93

WDS:	HDS93	WDS ID/Discoverer
P:	88.720	Orbital period (years)
a:	0.3023	Semi-major axis (arcseconds)
i:	143.4	Inclination (degrees)
Ω:	32.7	Longitude of ascending node (degrees)
T:	1995.030	Epoch of periastron passage (year)
e:	0.138	Eccentricity
ω:	263.9	Longitude of periastron (degrees)
Start-Year:	1981.0	Year
End-Year:	2069.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS93

Position:	004247.92+124841.8	Epoch-2000 right ascension and declination
WDS-ID:	00428+1249	WDS designation
Discoverer Code:	HDS93	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	3361	Hipparcos catalog number
V1:	10.78	Magnitude of the primary
V2:	12.02	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS93

WDS 6th Orbit including measures of HDS93

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

Ephemeris of HDS93

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.305      0.8
-------------------------
1981.0     0.282    202.6
1982.0     0.277    198.8
1983.0     0.272    194.9
1984.0     0.266    190.8
1985.0     0.260    186.6
1986.0     0.254    182.1
1987.0     0.247    177.4
1988.0     0.241    172.4
1989.0     0.235    167.2
1990.0     0.229    161.7
1991.0     0.223    156.0
1992.0     0.219    149.9
1993.0     0.215    143.6
1994.0     0.212    137.1
1995.0     0.210    130.5
1996.0     0.209    123.8
1997.0     0.210    117.1
1998.0     0.212    110.4
1999.0     0.215    103.9
2000.0     0.219     97.7
2001.0     0.224     91.7
2002.0     0.230     85.9
2003.0     0.236     80.5
2004.0     0.242     75.3
2005.0     0.249     70.4
2006.0     0.256     65.8
2007.0     0.262     61.4
2008.0     0.269     57.2
2009.0     0.275     53.2
2010.0     0.280     49.4
2011.0     0.286     45.7
2012.0     0.290     42.1
2013.0     0.295     38.7
2014.0     0.298     35.4
2015.0     0.302     32.1
2016.0     0.304     28.9
2017.0     0.306     25.7
2018.0     0.308     22.6
2019.0     0.309     19.5
2020.0     0.309     16.4
2021.0     0.309     13.3
2022.0     0.309     10.2
2023.0     0.308      7.1
2024.0     0.307      4.0
2025.0     0.305      0.8
2026.0     0.304    357.6
2027.0     0.302    354.4
2028.0     0.299    351.2
2029.0     0.297    347.8
2030.0     0.295    344.5
2031.0     0.292    341.1
2032.0     0.290    337.6
2033.0     0.288    334.0
2034.0     0.286    330.5
2035.0     0.283    326.8
2036.0     0.282    323.1
2037.0     0.280    319.4
2038.0     0.279    315.6
2039.0     0.277    311.8
2040.0     0.277    307.9
2041.0     0.276    304.1
2042.0     0.276    300.2
2043.0     0.276    296.3
2044.0     0.276    292.5
2045.0     0.277    288.6
2046.0     0.278    284.8
2047.0     0.279    281.0
2048.0     0.281    277.2
2049.0     0.282    273.5
2050.0     0.284    269.8
2051.0     0.286    266.2
2052.0     0.288    262.6
2053.0     0.290    259.1
2054.0     0.292    255.6
2055.0     0.294    252.2
2056.0     0.296    248.8
2057.0     0.297    245.5
2058.0     0.299    242.1
2059.0     0.300    238.8
2060.0     0.300    235.6
2061.0     0.300    232.3
2062.0     0.300    229.0
2063.0     0.300    225.8
2064.0     0.299    222.5
2065.0     0.297    219.1
2066.0     0.295    215.8
2067.0     0.292    212.3
2068.0     0.289    208.8

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.