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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:15:23

Orbital Elements for CVN17AA,AB

WDS:	CVN17AA,AB	WDS ID/Discoverer
P:	72.060	Orbital period (years)
a:	0.636	Semi-major axis (arcseconds)
i:	116.8	Inclination (degrees)
Ω:	79.8	Longitude of ascending node (degrees)
T:	1985.590	Epoch of periastron passage (year)
e:	0.42	Eccentricity
ω:	241.9	Longitude of periastron (degrees)
Start-Year:	1989.0	Year
End-Year:	2061.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CVN17AA,AB

Position:	203951.88+111458.8	Epoch-2000 right ascension and declination
WDS-ID:	20399+1115	WDS designation
Discoverer Code:	CVN17AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	196885	HD catalog number
Hipparcos number:	101966	Hipparcos catalog number
V1:	6.1 r	Magnitude of the primary
V2:	10.8 r	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CVN17AA,AB

WDS 6th Orbit including measures of CVN17AA,AB

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

Ephemeris of CVN17AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.492     29.4
-------------------------
1989.0     0.204    138.6
1990.0     0.252    122.3
1991.0     0.306    111.6
1992.0     0.361    104.1
1993.0     0.414     98.6
1994.0     0.463     94.3
1995.0     0.508     90.8
1996.0     0.548     87.8
1997.0     0.583     85.3
1998.0     0.614     82.9
1999.0     0.640     80.8
2000.0     0.663     78.9
2001.0     0.682     77.1
2002.0     0.698     75.3
2003.0     0.710     73.7
2004.0     0.719     72.1
2005.0     0.726     70.5
2006.0     0.729     68.9
2007.0     0.731     67.4
2008.0     0.730     65.8
2009.0     0.726     64.2
2010.0     0.721     62.7
2011.0     0.714     61.1
2012.0     0.705     59.4
2013.0     0.695     57.7
2014.0     0.683     56.0
2015.0     0.669     54.2
2016.0     0.655     52.3
2017.0     0.639     50.3
2018.0     0.623     48.2
2019.0     0.605     46.0
2020.0     0.587     43.7
2021.0     0.568     41.2
2022.0     0.550     38.6
2023.0     0.530     35.8
2024.0     0.511     32.7
2025.0     0.492     29.4
2026.0     0.473     25.9
2027.0     0.456     22.0
2028.0     0.439     17.9
2029.0     0.423     13.4
2030.0     0.409      8.6
2031.0     0.396      3.5
2032.0     0.386    358.1
2033.0     0.378    352.4
2034.0     0.373    346.6
2035.0     0.370    340.5
2036.0     0.370    334.5
2037.0     0.373    328.5
2038.0     0.378    322.6
2039.0     0.386    317.0
2040.0     0.395    311.5
2041.0     0.406    306.4
2042.0     0.417    301.5
2043.0     0.429    296.9
2044.0     0.441    292.5
2045.0     0.452    288.4
2046.0     0.462    284.4
2047.0     0.470    280.6
2048.0     0.474    276.9
2049.0     0.475    273.3
2050.0     0.472    269.6
2051.0     0.463    265.8
2052.0     0.447    261.8
2053.0     0.424    257.5
2054.0     0.393    252.5
2055.0     0.355    246.6
2056.0     0.309    239.1
2057.0     0.259    228.8
2058.0     0.212    213.6
2059.0     0.179    191.3
2060.0     0.174    163.9

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.