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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:34:37

Orbital Elements for I1455

WDS:	I1455	WDS ID/Discoverer
P:	79.700	Orbital period (years)
a:	0.336	Semi-major axis (arcseconds)
i:	97.6	Inclination (degrees)
Ω:	179.1	Longitude of ascending node (degrees)
T:	1999.100	Epoch of periastron passage (year)
e:	0.857	Eccentricity
ω:	65.8	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 I1455

Position:	223203.15-424424.4	Epoch-2000 right ascension and declination
WDS-ID:	22321-4244	WDS designation
Discoverer Code:	I1455	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	213436	HD catalog number
Hipparcos number:	111223	Hipparcos catalog number
V1:	8.3	Magnitude of the primary
V2:	8.6	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for I1455

WDS 6th Orbit including measures of I1455

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

Ephemeris of I1455

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.327    348.1
-------------------------
1986.0     0.055    274.4
1987.0     0.053    262.5
1988.0     0.053    250.1
1989.0     0.055    238.1
1990.0     0.059    227.4
1991.0     0.065    218.3
1992.0     0.071    210.8
1993.0     0.078    204.5
1994.0     0.084    199.2
1995.0     0.089    194.6
1996.0     0.093    190.4
1997.0     0.091    186.3
1998.0     0.078    181.6
1999.0     0.029    168.6
2000.0     0.057      5.2
2001.0     0.116      0.2
2002.0     0.156    358.3
2003.0     0.187    357.1
2004.0     0.211    356.2
2005.0     0.232    355.5
2006.0     0.249    354.9
2007.0     0.263    354.4
2008.0     0.275    353.9
2009.0     0.286    353.5
2010.0     0.295    353.1
2011.0     0.303    352.7
2012.0     0.309    352.3
2013.0     0.315    352.0
2014.0     0.320    351.6
2015.0     0.323    351.3
2016.0     0.326    350.9
2017.0     0.329    350.6
2018.0     0.330    350.3
2019.0     0.332    350.0
2020.0     0.332    349.7
2021.0     0.332    349.4
2022.0     0.332    349.0
2023.0     0.331    348.7
2024.0     0.329    348.4
2025.0     0.327    348.1
2026.0     0.325    347.8
2027.0     0.323    347.4
2028.0     0.320    347.1
2029.0     0.316    346.7
2030.0     0.313    346.4
2031.0     0.309    346.0
2032.0     0.304    345.7
2033.0     0.300    345.3
2034.0     0.295    344.9
2035.0     0.290    344.5
2036.0     0.284    344.1
2037.0     0.278    343.6
2038.0     0.273    343.2
2039.0     0.266    342.7
2040.0     0.260    342.2
2041.0     0.253    341.6
2042.0     0.246    341.1
2043.0     0.239    340.5
2044.0     0.232    339.9
2045.0     0.224    339.2
2046.0     0.217    338.5
2047.0     0.209    337.7
2048.0     0.201    336.9
2049.0     0.192    336.0
2050.0     0.184    335.0
2051.0     0.175    333.9
2052.0     0.167    332.7
2053.0     0.158    331.4
2054.0     0.149    329.9
2055.0     0.140    328.3
2056.0     0.131    326.4
2057.0     0.122    324.2
2058.0     0.112    321.6
2059.0     0.103    318.6
2060.0     0.095    315.1
2061.0     0.086    310.8
2062.0     0.078    305.6
2063.0     0.070    299.2

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.