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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:28:36

Orbital Elements for HDS940AB

WDS:	HDS940AB	WDS ID/Discoverer
P:	80.300	Orbital period (years)
a:	0.382	Semi-major axis (arcseconds)
i:	30.7	Inclination (degrees)
Ω:	23.6	Longitude of ascending node (degrees)
T:	2029.000	Epoch of periastron passage (year)
e:	0.072	Eccentricity
ω:	324.7	Longitude of periastron (degrees)
Start-Year:	1985.0	Year
End-Year:	2065.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS940AB

Position:	064640.72+082147.3	Epoch-2000 right ascension and declination
WDS-ID:	06467+0822	WDS designation
Discoverer Code:	HDS940AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	49015	HD catalog number
Hipparcos number:	32475	Hipparcos catalog number
V1:	7.15	Magnitude of the primary
V2:	11.09	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS940AB

WDS 6th Orbit including measures of HDS940AB

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

Ephemeris of HDS940AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.323    331.7
-------------------------
1985.0     0.376    157.6
1986.0     0.380    161.5
1987.0     0.384    165.4
1988.0     0.388    169.1
1989.0     0.392    172.8
1990.0     0.395    176.4
1991.0     0.398    180.0
1992.0     0.401    183.5
1993.0     0.403    187.0
1994.0     0.404    190.5
1995.0     0.405    193.9
1996.0     0.405    197.3
1997.0     0.405    200.7
1998.0     0.404    204.2
1999.0     0.402    207.6
2000.0     0.400    211.1
2001.0     0.397    214.7
2002.0     0.393    218.3
2003.0     0.389    221.9
2004.0     0.385    225.7
2005.0     0.379    229.5
2006.0     0.374    233.5
2007.0     0.368    237.5
2008.0     0.362    241.7
2009.0     0.356    246.1
2010.0     0.350    250.6
2011.0     0.344    255.2
2012.0     0.338    260.1
2013.0     0.333    265.1
2014.0     0.328    270.2
2015.0     0.323    275.5
2016.0     0.319    280.9
2017.0     0.316    286.5
2018.0     0.314    292.2
2019.0     0.313    297.9
2020.0     0.312    303.6
2021.0     0.313    309.3
2022.0     0.314    315.1
2023.0     0.316    320.7
2024.0     0.319    326.3
2025.0     0.323    331.7
2026.0     0.326    337.0
2027.0     0.330    342.2
2028.0     0.335    347.3
2029.0     0.339    352.3
2030.0     0.343    357.1
2031.0     0.347      1.8
2032.0     0.350      6.4
2033.0     0.353     11.0
2034.0     0.356     15.5
2035.0     0.358     19.9
2036.0     0.359     24.2
2037.0     0.360     28.6
2038.0     0.360     32.9
2039.0     0.360     37.2
2040.0     0.359     41.6
2041.0     0.358     45.9
2042.0     0.357     50.3
2043.0     0.355     54.7
2044.0     0.353     59.2
2045.0     0.350     63.8
2046.0     0.348     68.4
2047.0     0.346     73.0
2048.0     0.344     77.7
2049.0     0.342     82.5
2050.0     0.341     87.3
2051.0     0.340     92.2
2052.0     0.339     97.0
2053.0     0.339    101.9
2054.0     0.339    106.8
2055.0     0.340    111.7
2056.0     0.342    116.5
2057.0     0.344    121.3
2058.0     0.347    126.0
2059.0     0.350    130.6
2060.0     0.353    135.1
2061.0     0.357    139.6
2062.0     0.361    143.9
2063.0     0.365    148.2
2064.0     0.370    152.3

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.