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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:31:04

Orbital Elements for A2074

WDS:	A2074	WDS ID/Discoverer
P:	59.000	Orbital period (years)
a:	0.206	Semi-major axis (arcseconds)
i:	59.9	Inclination (degrees)
Ω:	117.9	Longitude of ascending node (degrees)
T:	1981.900	Epoch of periastron passage (year)
e:	0.9	Eccentricity
ω:	305.2	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2074

Position:	152720.82+173806.3	Epoch-2000 right ascension and declination
WDS-ID:	15273+1738	WDS designation
Discoverer Code:	A2074	Discover designation and components
ADS number:	9645	Aitken Double Star catalog
HD number:	137792	HD catalog number
Hipparcos number:	75653	Hipparcos catalog number
V1:	8.55	Magnitude of the primary
V2:	9.37	Magnitude of the secondary
Equinox:		Equinox
Date:	1973	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2074

WDS 6th Orbit including measures of A2074

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

Ephemeris of A2074

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.269    272.3
-------------------------
1996.0     0.190    247.0
1997.0     0.199    248.5
1998.0     0.207    249.9
1999.0     0.215    251.2
2000.0     0.222    252.3
2001.0     0.229    253.5
2002.0     0.235    254.5
2003.0     0.242    255.5
2004.0     0.247    256.5
2005.0     0.252    257.4
2006.0     0.257    258.2
2007.0     0.262    259.1
2008.0     0.266    259.9
2009.0     0.270    260.7
2010.0     0.273    261.4
2011.0     0.276    262.2
2012.0     0.278    262.9
2013.0     0.280    263.7
2014.0     0.282    264.4
2015.0     0.283    265.1
2016.0     0.284    265.8
2017.0     0.284    266.5
2018.0     0.284    267.2
2019.0     0.283    267.9
2020.0     0.282    268.6
2021.0     0.281    269.3
2022.0     0.279    270.0
2023.0     0.276    270.8
2024.0     0.272    271.5
2025.0     0.269    272.3
2026.0     0.264    273.1
2027.0     0.259    273.9
2028.0     0.253    274.8
2029.0     0.246    275.7
2030.0     0.238    276.7
2031.0     0.229    277.7
2032.0     0.219    278.8
2033.0     0.208    280.1
2034.0     0.195    281.5
2035.0     0.181    283.1
2036.0     0.165    285.0
2037.0     0.145    287.3
2038.0     0.122    290.5
2039.0     0.093    295.4
2040.0     0.053    306.5
2041.0     0.020    102.3
2042.0     0.042    159.0
2043.0     0.053    184.5
2044.0     0.066    200.6
2045.0     0.079    211.4
2046.0     0.092    219.2
2047.0     0.105    225.1
2048.0     0.117    229.7
2049.0     0.129    233.4
2050.0     0.140    236.6
2051.0     0.151    239.2
2052.0     0.162    241.5
2053.0     0.172    243.6

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.