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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:33:02

Orbital Elements for STT38BC

WDS:	STT38BC	WDS ID/Discoverer
P:	62.630	Orbital period (years)
a:	0.317	Semi-major axis (arcseconds)
i:	104.8	Inclination (degrees)
Ω:	103.2	Longitude of ascending node (degrees)
T:	1951.980	Epoch of periastron passage (year)
e:	0.874	Eccentricity
ω:	163.4	Longitude of periastron (degrees)
Start-Year:	1994.0	Year
End-Year:	2056.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT38BC

Position:	020353.92+421947.5	Epoch-2000 right ascension and declination
WDS-ID:	02039+4220	WDS designation
Discoverer Code:	STT38BC	Discover designation and components
ADS number:	1630	Aitken Double Star catalog
HD number:	12534	HD catalog number
Hipparcos number:	9640	Hipparcos catalog number
V1:	5.3	Magnitude of the primary
V2:	6.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STT38BC

WDS 6th Orbit including measures of STT38BC

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

Ephemeris of STT38BC

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.321    114.5
-------------------------
1994.0     0.543    105.2
1995.0     0.535    104.9
1996.0     0.525    104.7
1997.0     0.515    104.4
1998.0     0.503    104.1
1999.0     0.490    103.8
2000.0     0.476    103.5
2001.0     0.460    103.2
2002.0     0.443    102.8
2003.0     0.424    102.5
2004.0     0.404    102.0
2005.0     0.381    101.6
2006.0     0.357    101.0
2007.0     0.329    100.4
2008.0     0.300     99.7
2009.0     0.267     98.8
2010.0     0.230     97.6
2011.0     0.188     96.0
2012.0     0.139     93.3
2013.0     0.081     87.0
2014.0     0.016     27.6
2015.0     0.039    270.6
2016.0     0.028    180.7
2017.0     0.065    138.3
2018.0     0.106    128.0
2019.0     0.144    123.3
2020.0     0.179    120.6
2021.0     0.212    118.7
2022.0     0.242    117.3
2023.0     0.270    116.2
2024.0     0.297    115.3
2025.0     0.321    114.5
2026.0     0.344    113.9
2027.0     0.366    113.3
2028.0     0.386    112.8
2029.0     0.405    112.4
2030.0     0.423    111.9
2031.0     0.439    111.6
2032.0     0.455    111.2
2033.0     0.469    110.9
2034.0     0.482    110.5
2035.0     0.495    110.2
2036.0     0.506    110.0
2037.0     0.517    109.7
2038.0     0.526    109.4
2039.0     0.535    109.2
2040.0     0.543    108.9
2041.0     0.550    108.7
2042.0     0.556    108.4
2043.0     0.561    108.2
2044.0     0.565    108.0
2045.0     0.569    107.8
2046.0     0.571    107.5
2047.0     0.573    107.3
2048.0     0.574    107.1
2049.0     0.574    106.9
2050.0     0.573    106.7
2051.0     0.571    106.4
2052.0     0.568    106.2
2053.0     0.564    106.0
2054.0     0.560    105.8
2055.0     0.554    105.5

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.