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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:15:06

Orbital Elements for DAW85

WDS:	DAW85	WDS ID/Discoverer
P:	65.720	Orbital period (years)
a:	0.308	Semi-major axis (arcseconds)
i:	147.9	Inclination (degrees)
Ω:	111.7	Longitude of ascending node (degrees)
T:	2065.650	Epoch of periastron passage (year)
e:	0.75	Eccentricity
ω:	12.0	Longitude of periastron (degrees)
Start-Year:	1993.0	Year
End-Year:	2057.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DAW85

Position:	053259.81-241518.5	Epoch-2000 right ascension and declination
WDS-ID:	05330-2415	WDS designation
Discoverer Code:	DAW85	Discover designation and components
ADS number:	4153	Aitken Double Star catalog
HD number:	36745	HD catalog number
Hipparcos number:	36745	Hipparcos catalog number
V1:	9.66	Magnitude of the primary
V2:	10.64	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2020	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for DAW85

WDS 6th Orbit including measures of DAW85

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

Ephemeris of DAW85

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.518    289.6
-------------------------
1993.0     0.239    235.7
1994.0     0.213    230.0
1995.0     0.186    222.6
1996.0     0.158    212.7
1997.0     0.130    198.5
1998.0     0.104    176.9
1999.0     0.085    143.7
2000.0     0.076     98.0
2001.0     0.082     49.3
2002.0     0.106     14.8
2003.0     0.138    354.8
2004.0     0.171    342.4
2005.0     0.202    334.0
2006.0     0.232    327.8
2007.0     0.259    322.9
2008.0     0.285    319.0
2009.0     0.309    315.7
2010.0     0.331    312.8
2011.0     0.351    310.3
2012.0     0.370    308.1
2013.0     0.388    306.1
2014.0     0.405    304.2
2015.0     0.420    302.5
2016.0     0.434    300.9
2017.0     0.447    299.4
2018.0     0.459    298.0
2019.0     0.470    296.7
2020.0     0.480    295.4
2021.0     0.490    294.1
2022.0     0.498    292.9
2023.0     0.505    291.8
2024.0     0.512    290.7
2025.0     0.518    289.6
2026.0     0.523    288.5
2027.0     0.527    287.4
2028.0     0.530    286.4
2029.0     0.533    285.3
2030.0     0.535    284.3
2031.0     0.536    283.3
2032.0     0.536    282.3
2033.0     0.536    281.3
2034.0     0.534    280.3
2035.0     0.532    279.2
2036.0     0.530    278.2
2037.0     0.526    277.2
2038.0     0.522    276.1
2039.0     0.517    275.0
2040.0     0.512    273.9
2041.0     0.505    272.8
2042.0     0.498    271.6
2043.0     0.490    270.5
2044.0     0.481    269.2
2045.0     0.471    267.9
2046.0     0.461    266.6
2047.0     0.449    265.2
2048.0     0.437    263.7
2049.0     0.424    262.1
2050.0     0.410    260.5
2051.0     0.395    258.7
2052.0     0.378    256.7
2053.0     0.361    254.6
2054.0     0.343    252.2
2055.0     0.323    249.6
2056.0     0.302    246.6

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.