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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:38:11

Orbital Elements for STF1196AB

WDS:	STF1196AB	WDS ID/Discoverer
P:	59.425	Orbital period (years)
a:	0.85272	Semi-major axis (arcseconds)
i:	173.574	Inclination (degrees)
Ω:	67.744	Longitude of ascending node (degrees)
T:	1929.528	Epoch of periastron passage (year)
e:	0.31435	Eccentricity
ω:	239.232	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 STF1196AB

Position:	081212.79+173851.2	Epoch-2000 right ascension and declination
WDS-ID:	08122+1739	WDS designation
Discoverer Code:	STF1196AB	Discover designation and components
ADS number:	6650	Aitken Double Star catalog
HD number:	68257	HD catalog number
Hipparcos number:	40167	Hipparcos catalog number
V1:	5.30	Magnitude of the primary
V2:	6.25	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF1196AB

WDS 6th Orbit including measures of STF1196AB

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

Ephemeris of STF1196AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.079    347.0
-------------------------
1996.0     0.708    113.4
1997.0     0.738    105.4
1998.0     0.768     98.1
1999.0     0.799     91.3
2000.0     0.828     85.0
2001.0     0.857     79.2
2002.0     0.885     73.7
2003.0     0.912     68.6
2004.0     0.937     63.7
2005.0     0.960     59.1
2006.0     0.982     54.7
2007.0     1.003     50.5
2008.0     1.022     46.4
2009.0     1.039     42.5
2010.0     1.054     38.7
2011.0     1.068     35.0
2012.0     1.080     31.4
2013.0     1.090     27.9
2014.0     1.099     24.4
2015.0     1.105     21.0
2016.0     1.110     17.6
2017.0     1.114     14.2
2018.0     1.115     10.9
2019.0     1.115      7.6
2020.0     1.114      4.2
2021.0     1.110      0.9
2022.0     1.105    357.5
2023.0     1.098    354.0
2024.0     1.090    350.6
2025.0     1.079    347.0
2026.0     1.068    343.4
2027.0     1.054    339.7
2028.0     1.039    335.9
2029.0     1.022    332.0
2030.0     1.004    328.0
2031.0     0.984    323.8
2032.0     0.963    319.4
2033.0     0.940    314.8
2034.0     0.915    310.0
2035.0     0.890    304.9
2036.0     0.863    299.5
2037.0     0.836    293.7
2038.0     0.807    287.5
2039.0     0.778    280.9
2040.0     0.749    273.8
2041.0     0.720    266.1
2042.0     0.691    257.7
2043.0     0.665    248.7
2044.0     0.640    238.9
2045.0     0.618    228.4
2046.0     0.601    217.2
2047.0     0.589    205.4
2048.0     0.583    193.3
2049.0     0.583    181.1
2050.0     0.589    168.9
2051.0     0.602    157.2
2052.0     0.620    146.0
2053.0     0.642    135.6

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.