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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:04:12

Orbital Elements for A1544AB

WDS:	A1544AB	WDS ID/Discoverer
P:	79.100	Orbital period (years)
a:	0.164	Semi-major axis (arcseconds)
i:	138.9	Inclination (degrees)
Ω:	107.7	Longitude of ascending node (degrees)
T:	1961.300	Epoch of periastron passage (year)
e:	0.424	Eccentricity
ω:	78.3	Longitude of periastron (degrees)
Start-Year:	1986.0	Year
End-Year:	2064.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1544AB

Position:	044729.06+432402.0	Epoch-2000 right ascension and declination
WDS-ID:	04475+4324	WDS designation
Discoverer Code:	A1544AB	Discover designation and components
ADS number:	3438	Aitken Double Star catalog
HD number:	30196	HD catalog number
Hipparcos number:	22255	Hipparcos catalog number
V1:	9.50	Magnitude of the primary
V2:	9.66	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2007	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for A1544AB

WDS 6th Orbit including measures of A1544AB

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

Ephemeris of A1544AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.153    140.6
-------------------------
1986.0     0.185    249.9
1987.0     0.185    247.5
1988.0     0.186    245.0
1989.0     0.186    242.6
1990.0     0.186    240.2
1991.0     0.185    237.7
1992.0     0.185    235.3
1993.0     0.185    232.9
1994.0     0.184    230.4
1995.0     0.184    227.9
1996.0     0.183    225.5
1997.0     0.182    222.9
1998.0     0.181    220.4
1999.0     0.180    217.9
2000.0     0.179    215.3
2001.0     0.179    212.7
2002.0     0.178    210.0
2003.0     0.177    207.4
2004.0     0.176    204.7
2005.0     0.175    202.0
2006.0     0.174    199.2
2007.0     0.173    196.4
2008.0     0.172    193.6
2009.0     0.171    190.8
2010.0     0.170    187.9
2011.0     0.169    185.0
2012.0     0.168    182.1
2013.0     0.168    179.1
2014.0     0.167    176.1
2015.0     0.166    173.1
2016.0     0.165    170.1
2017.0     0.164    167.0
2018.0     0.163    163.9
2019.0     0.162    160.7
2020.0     0.161    157.5
2021.0     0.160    154.2
2022.0     0.158    150.9
2023.0     0.157    147.6
2024.0     0.155    144.1
2025.0     0.153    140.6
2026.0     0.151    137.0
2027.0     0.148    133.2
2028.0     0.145    129.3
2029.0     0.142    125.3
2030.0     0.138    121.0
2031.0     0.133    116.4
2032.0     0.128    111.5
2033.0     0.122    106.2
2034.0     0.116    100.3
2035.0     0.109     93.7
2036.0     0.101     86.0
2037.0     0.093     77.1
2038.0     0.085     66.5
2039.0     0.078     54.0
2040.0     0.073     39.4
2041.0     0.072     23.3
2042.0     0.073      7.2
2043.0     0.078    352.4
2044.0     0.084    339.5
2045.0     0.093    328.9
2046.0     0.102    320.0
2047.0     0.110    312.5
2048.0     0.119    306.2
2049.0     0.127    300.7
2050.0     0.135    295.8
2051.0     0.141    291.4
2052.0     0.148    287.4
2053.0     0.153    283.7
2054.0     0.158    280.3
2055.0     0.163    277.0
2056.0     0.167    273.9
2057.0     0.170    271.0
2058.0     0.173    268.2
2059.0     0.176    265.4
2060.0     0.178    262.8
2061.0     0.180    260.2
2062.0     0.182    257.6
2063.0     0.183    255.1

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.