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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:05:29

Orbital Elements for HDS1627AA,AB

WDS:	HDS1627AA,AB	WDS ID/Discoverer
P:	46.300	Orbital period (years)
a:	0.222	Semi-major axis (arcseconds)
i:	119.5	Inclination (degrees)
Ω:	89.9	Longitude of ascending node (degrees)
T:	2003.500	Epoch of periastron passage (year)
e:	0.358	Eccentricity
ω:	165.0	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1627AA,AB

Position:	112714.58-160343.5	Epoch-2000 right ascension and declination
WDS-ID:	11272-1604	WDS designation
Discoverer Code:	HDS1627AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	55884	Hipparcos catalog number
V1:	11.47	Magnitude of the primary
V2:	11.85	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS1627AA,AB

WDS 6th Orbit including measures of HDS1627AA,AB

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

Ephemeris of HDS1627AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.285    100.9
-------------------------
2002.0     0.120    293.0
2003.0     0.134    282.1
2004.0     0.142    273.0
2005.0     0.144    264.5
2006.0     0.140    255.8
2007.0     0.132    246.4
2008.0     0.121    235.4
2009.0     0.111    222.3
2010.0     0.104    207.1
2011.0     0.103    190.5
2012.0     0.107    174.4
2013.0     0.117    160.3
2014.0     0.131    148.8
2015.0     0.147    139.7
2016.0     0.165    132.4
2017.0     0.182    126.5
2018.0     0.199    121.7
2019.0     0.215    117.6
2020.0     0.230    114.0
2021.0     0.244    110.9
2022.0     0.257    108.1
2023.0     0.268    105.5
2024.0     0.277    103.1
2025.0     0.285    100.9
2026.0     0.291     98.8
2027.0     0.295     96.7
2028.0     0.298     94.7
2029.0     0.298     92.7
2030.0     0.297     90.7
2031.0     0.294     88.7
2032.0     0.289     86.6
2033.0     0.282     84.5
2034.0     0.272     82.2
2035.0     0.261     79.7
2036.0     0.248     77.0
2037.0     0.233     73.9
2038.0     0.216     70.4
2039.0     0.197     66.3
2040.0     0.176     61.2
2041.0     0.155     54.8
2042.0     0.133     46.2
2043.0     0.112     34.3
2044.0     0.095     17.6
2045.0     0.086    355.8
2046.0     0.089    332.2
2047.0     0.100    312.1

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.