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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:02:21

Orbital Elements for I1390

WDS:	I1390	WDS ID/Discoverer
P:	47.600	Orbital period (years)
a:	0.185	Semi-major axis (arcseconds)
i:	58.6	Inclination (degrees)
Ω:	73.8	Longitude of ascending node (degrees)
T:	2009.434	Epoch of periastron passage (year)
e:	0.666	Eccentricity
ω:	220.7	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 I1390

Position:	190252.64-541229.5	Epoch-2000 right ascension and declination
WDS-ID:	19029-5413	WDS designation
Discoverer Code:	I1390	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	176353	HD catalog number
Hipparcos number:	93524	Hipparcos catalog number
V1:	9.64	Magnitude of the primary
V2:	9.20	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for I1390

WDS 6th Orbit including measures of I1390

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

Ephemeris of I1390

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.265     86.2
-------------------------
2002.0     0.102    155.8
2003.0     0.093    166.5
2004.0     0.086    179.2
2005.0     0.081    193.7
2006.0     0.079    209.3
2007.0     0.078    225.6
2008.0     0.074    242.6
2009.0     0.061    264.1
2010.0     0.039    306.6
2011.0     0.046     13.0
2012.0     0.077     41.8
2013.0     0.108     53.9
2014.0     0.135     60.7
2015.0     0.158     65.4
2016.0     0.179     69.0
2017.0     0.196     71.8
2018.0     0.211     74.3
2019.0     0.224     76.4
2020.0     0.234     78.3
2021.0     0.243     80.1
2022.0     0.251     81.7
2023.0     0.257     83.3
2024.0     0.262     84.8
2025.0     0.265     86.2
2026.0     0.268     87.6
2027.0     0.269     89.0
2028.0     0.269     90.4
2029.0     0.269     91.8
2030.0     0.267     93.2
2031.0     0.265     94.6
2032.0     0.261     96.1
2033.0     0.257     97.6
2034.0     0.252     99.1
2035.0     0.246    100.7
2036.0     0.240    102.4
2037.0     0.233    104.2
2038.0     0.225    106.2
2039.0     0.217    108.2
2040.0     0.207    110.5
2041.0     0.198    112.9
2042.0     0.188    115.6
2043.0     0.177    118.7
2044.0     0.166    122.1
2045.0     0.154    126.0
2046.0     0.142    130.6
2047.0     0.131    136.0

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.