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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:05:01

Orbital Elements for RST4257AB

WDS:	RST4257AB	WDS ID/Discoverer
P:	87.630	Orbital period (years)
a:	0.2497	Semi-major axis (arcseconds)
i:	119.5	Inclination (degrees)
Ω:	169.8	Longitude of ascending node (degrees)
T:	2011.400	Epoch of periastron passage (year)
e:	0.566	Eccentricity
ω:	3.1	Longitude of periastron (degrees)
Start-Year:	1982.0	Year
End-Year:	2068.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST4257AB

Position:	045516.46-035155.1	Epoch-2000 right ascension and declination
WDS-ID:	04553-0352	WDS designation
Discoverer Code:	RST4257AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	31375	Hipparcos catalog number
V1:	10.2	Magnitude of the primary
V2:	10.2	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST4257AB

WDS 6th Orbit including measures of RST4257AB

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

Ephemeris of RST4257AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.175     23.8
-------------------------
1982.0     0.336    337.4
1983.0     0.329    336.4
1984.0     0.321    335.4
1985.0     0.312    334.4
1986.0     0.303    333.3
1987.0     0.294    332.1
1988.0     0.284    330.9
1989.0     0.273    329.5
1990.0     0.262    328.1
1991.0     0.251    326.5
1992.0     0.239    324.8
1993.0     0.227    322.9
1994.0     0.214    320.7
1995.0     0.200    318.3
1996.0     0.187    315.5
1997.0     0.173    312.3
1998.0     0.158    308.5
1999.0     0.144    303.9
2000.0     0.130    298.4
2001.0     0.117    291.5
2002.0     0.104    282.9
2003.0     0.094    272.2
2004.0     0.086    259.2
2005.0     0.082    244.3
2006.0     0.083    228.9
2007.0     0.087    214.3
2008.0     0.094    201.5
2009.0     0.101    190.5
2010.0     0.106    180.8
2011.0     0.108    171.8
2012.0     0.107    162.9
2013.0     0.101    153.3
2014.0     0.093    142.3
2015.0     0.085    129.1
2016.0     0.079    113.6
2017.0     0.078     96.5
2018.0     0.081     79.8
2019.0     0.089     65.3
2020.0     0.101     53.7
2021.0     0.114     44.7
2022.0     0.129     37.6
2023.0     0.144     32.0
2024.0     0.160     27.5
2025.0     0.175     23.8
2026.0     0.189     20.6
2027.0     0.204     17.9
2028.0     0.218     15.6
2029.0     0.231     13.5
2030.0     0.244     11.7
2031.0     0.256     10.0
2032.0     0.268      8.5
2033.0     0.279      7.1
2034.0     0.289      5.8
2035.0     0.299      4.6
2036.0     0.309      3.5
2037.0     0.318      2.4
2038.0     0.326      1.4
2039.0     0.334      0.5
2040.0     0.341    359.6
2041.0     0.348    358.7
2042.0     0.354    357.8
2043.0     0.360    357.0
2044.0     0.365    356.2
2045.0     0.370    355.5
2046.0     0.374    354.7
2047.0     0.378    354.0
2048.0     0.381    353.3
2049.0     0.384    352.5
2050.0     0.386    351.8
2051.0     0.388    351.2
2052.0     0.389    350.5
2053.0     0.390    349.8
2054.0     0.391    349.1
2055.0     0.391    348.4
2056.0     0.390    347.7
2057.0     0.389    347.1
2058.0     0.388    346.4
2059.0     0.386    345.7
2060.0     0.383    345.0
2061.0     0.381    344.3
2062.0     0.377    343.5
2063.0     0.373    342.8
2064.0     0.369    342.0
2065.0     0.364    341.3
2066.0     0.359    340.5
2067.0     0.353    339.7

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.