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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:36:12

Orbital Elements for STF2934A

WDS:	STF2934A	WDS ID/Discoverer
P:	81.000	Orbital period (years)
a:	0.101	Semi-major axis (arcseconds)
i:	58.4	Inclination (degrees)
Ω:	199.3	Longitude of ascending node (degrees)
T:	1992.300	Epoch of periastron passage (year)
e:	0.47	Eccentricity
ω:	308.9	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 STF2934A

Position:	224151.63+212553.5	Epoch-2000 right ascension and declination
WDS-ID:	22419+2126	WDS designation
Discoverer Code:	STF2934A	Discover designation and components
ADS number:	16185	Aitken Double Star catalog
HD number:	215013	HD catalog number
Hipparcos number:	112063	Hipparcos catalog number
V1:	8.64	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2011	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF2934A

WDS 6th Orbit including measures of STF2934A

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

Ephemeris of STF2934A

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.091    330.3
-------------------------
1985.0     0.057     49.4
1986.0     0.049     56.9
1987.0     0.042     67.1
1988.0     0.035     81.5
1989.0     0.031    100.9
1990.0     0.030    123.9
1991.0     0.033    145.4
1992.0     0.038    162.2
1993.0     0.044    174.5
1994.0     0.050    183.9
1995.0     0.056    191.3
1996.0     0.060    197.6
1997.0     0.063    203.2
1998.0     0.065    208.3
1999.0     0.066    213.2
2000.0     0.066    218.0
2001.0     0.066    222.7
2002.0     0.066    227.5
2003.0     0.065    232.3
2004.0     0.065    237.3
2005.0     0.064    242.4
2006.0     0.063    247.6
2007.0     0.062    252.9
2008.0     0.062    258.3
2009.0     0.062    263.8
2010.0     0.062    269.3
2011.0     0.062    274.7
2012.0     0.063    280.1
2013.0     0.064    285.3
2014.0     0.065    290.3
2015.0     0.067    295.1
2016.0     0.069    299.7
2017.0     0.071    304.0
2018.0     0.073    308.1
2019.0     0.075    311.9
2020.0     0.078    315.5
2021.0     0.080    318.8
2022.0     0.083    322.0
2023.0     0.086    324.9
2024.0     0.088    327.7
2025.0     0.091    330.3
2026.0     0.094    332.7
2027.0     0.097    335.0
2028.0     0.099    337.2
2029.0     0.102    339.3
2030.0     0.105    341.3
2031.0     0.107    343.1
2032.0     0.109    344.9
2033.0     0.112    346.6
2034.0     0.114    348.3
2035.0     0.116    349.9
2036.0     0.118    351.4
2037.0     0.119    352.9
2038.0     0.121    354.4
2039.0     0.122    355.8
2040.0     0.124    357.2
2041.0     0.125    358.5
2042.0     0.126    359.9
2043.0     0.126      1.2
2044.0     0.127      2.5
2045.0     0.127      3.8
2046.0     0.127      5.1
2047.0     0.127      6.4
2048.0     0.126      7.7
2049.0     0.126      9.0
2050.0     0.125     10.4
2051.0     0.123     11.7
2052.0     0.122     13.1
2053.0     0.120     14.6
2054.0     0.117     16.0
2055.0     0.115     17.6
2056.0     0.112     19.2
2057.0     0.108     21.0
2058.0     0.104     22.8
2059.0     0.100     24.8
2060.0     0.095     27.0
2061.0     0.090     29.4
2062.0     0.084     32.2
2063.0     0.078     35.4
2064.0     0.072     39.1

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.