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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:32:44

Orbital Elements for I7

WDS:	I7	WDS ID/Discoverer
P:	85.010	Orbital period (years)
a:	0.891	Semi-major axis (arcseconds)
i:	104.4	Inclination (degrees)
Ω:	236.0	Longitude of ascending node (degrees)
T:	1958.700	Epoch of periastron passage (year)
e:	0.955	Eccentricity
ω:	244.8	Longitude of periastron (degrees)
Start-Year:	1983.0	Year
End-Year:	2067.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I7

Position:	071729.56-465845.4	Epoch-2000 right ascension and declination
WDS-ID:	07175-4659	WDS designation
Discoverer Code:	I7	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	57095	HD catalog number
Hipparcos number:	35296	Hipparcos catalog number
V1:	7.10	Magnitude of the primary
V2:	8.35	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for I7

WDS 6th Orbit including measures of I7

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

Ephemeris of I7

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.501    195.2
-------------------------
1983.0     0.868    214.1
1984.0     0.873    213.7
1985.0     0.877    213.4
1986.0     0.880    213.1
1987.0     0.882    212.8
1988.0     0.884    212.5
1989.0     0.884    212.1
1990.0     0.884    211.8
1991.0     0.884    211.5
1992.0     0.882    211.2
1993.0     0.880    210.9
1994.0     0.877    210.6
1995.0     0.874    210.2
1996.0     0.870    209.9
1997.0     0.865    209.6
1998.0     0.860    209.2
1999.0     0.854    208.9
2000.0     0.847    208.6
2001.0     0.840    208.2
2002.0     0.833    207.9
2003.0     0.824    207.5
2004.0     0.816    207.1
2005.0     0.806    206.8
2006.0     0.796    206.4
2007.0     0.786    206.0
2008.0     0.775    205.6
2009.0     0.763    205.1
2010.0     0.751    204.7
2011.0     0.738    204.3
2012.0     0.725    203.8
2013.0     0.711    203.3
2014.0     0.697    202.8
2015.0     0.682    202.3
2016.0     0.666    201.8
2017.0     0.650    201.2
2018.0     0.634    200.6
2019.0     0.616    199.9
2020.0     0.599    199.3
2021.0     0.580    198.6
2022.0     0.562    197.8
2023.0     0.542    197.0
2024.0     0.522    196.1
2025.0     0.501    195.2
2026.0     0.480    194.1
2027.0     0.458    193.0
2028.0     0.436    191.8
2029.0     0.413    190.4
2030.0     0.389    188.8
2031.0     0.364    187.1
2032.0     0.340    185.1
2033.0     0.314    182.8
2034.0     0.288    180.0
2035.0     0.262    176.7
2036.0     0.235    172.7
2037.0     0.208    167.6
2038.0     0.182    161.1
2039.0     0.157    152.4
2040.0     0.134    140.6
2041.0     0.116    124.6
2042.0     0.104    103.9
2043.0     0.093     78.9
2044.0     0.084    240.7
2045.0     0.244    230.3
2046.0     0.336    227.3
2047.0     0.406    225.5
2048.0     0.462    224.2
2049.0     0.510    223.1
2050.0     0.552    222.3
2051.0     0.589    221.5
2052.0     0.622    220.8
2053.0     0.651    220.2
2054.0     0.678    219.6
2055.0     0.702    219.1
2056.0     0.724    218.6
2057.0     0.744    218.2
2058.0     0.762    217.7
2059.0     0.778    217.3
2060.0     0.793    216.9
2061.0     0.807    216.5
2062.0     0.819    216.2
2063.0     0.830    215.8
2064.0     0.839    215.4
2065.0     0.848    215.1
2066.0     0.856    214.7

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.