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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:05:06

Orbital Elements for I253AB

WDS:	I253AB	WDS ID/Discoverer
P:	56.590	Orbital period (years)
a:	0.448	Semi-major axis (arcseconds)
i:	93.31	Inclination (degrees)
Ω:	137.96	Longitude of ascending node (degrees)
T:	1939.360	Epoch of periastron passage (year)
e:	0.738	Eccentricity
ω:	141.7	Longitude of periastron (degrees)
Start-Year:	1997.0	Year
End-Year:	2053.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I253AB

Position:	191859.06-331641.8	Epoch-2000 right ascension and declination
WDS-ID:	19190-3317	WDS designation
Discoverer Code:	I253AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	180702	HD catalog number
Hipparcos number:	94926	Hipparcos catalog number
V1:	8.77	Magnitude of the primary
V2:	7.25	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for I253AB

WDS 6th Orbit including measures of I253AB

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

Ephemeris of I253AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.620    140.5
-------------------------
1997.0     0.138    316.9
1998.0     0.130    314.2
1999.0     0.102    310.5
2000.0     0.067    303.2
2001.0     0.032    279.5
2002.0     0.027    194.9
2003.0     0.060    162.4
2004.0     0.097    153.8
2005.0     0.134    150.0
2006.0     0.171    147.8
2007.0     0.206    146.4
2008.0     0.240    145.4
2009.0     0.273    144.6
2010.0     0.305    144.0
2011.0     0.335    143.5
2012.0     0.364    143.1
2013.0     0.391    142.8
2014.0     0.418    142.5
2015.0     0.443    142.2
2016.0     0.467    142.0
2017.0     0.489    141.7
2018.0     0.510    141.6
2019.0     0.530    141.4
2020.0     0.548    141.2
2021.0     0.566    141.0
2022.0     0.581    140.9
2023.0     0.596    140.7
2024.0     0.609    140.6
2025.0     0.620    140.5
2026.0     0.630    140.3
2027.0     0.639    140.2
2028.0     0.646    140.1
2029.0     0.652    140.0
2030.0     0.655    139.9
2031.0     0.658    139.8
2032.0     0.658    139.6
2033.0     0.657    139.5
2034.0     0.653    139.4
2035.0     0.648    139.3
2036.0     0.641    139.2
2037.0     0.631    139.0
2038.0     0.619    138.9
2039.0     0.605    138.8
2040.0     0.587    138.6
2041.0     0.567    138.5
2042.0     0.543    138.3
2043.0     0.516    138.2
2044.0     0.485    138.0
2045.0     0.448    137.7
2046.0     0.407    137.5
2047.0     0.358    137.1
2048.0     0.302    136.7
2049.0     0.236    136.0
2050.0     0.158    134.7
2051.0     0.065    129.9
2052.0     0.042    327.2

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.