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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:29:40

Orbital Elements for STF1932B

WDS:	STF1932B	WDS ID/Discoverer
P:	50.000	Orbital period (years)
a:	0.055	Semi-major axis (arcseconds)
i:	90.0	Inclination (degrees)
Ω:	135.0	Longitude of ascending node (degrees)
T:	1895.000	Epoch of periastron passage (year)
e:	0.7	Eccentricity
ω:	243.5	Longitude of periastron (degrees)
Start-Year:	2000.0	Year
End-Year:	2050.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1932B

Position:	151820.25+265025.3	Epoch-2000 right ascension and declination
WDS-ID:	15183+2650	WDS designation
Discoverer Code:	STF1932B	Discover designation and components
ADS number:	9578	Aitken Double Star catalog
HD number:	136176B	HD catalog number
Hipparcos number:	74893	Hipparcos catalog number
V1:	6.6	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1950	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF1932B

WDS 6th Orbit including measures of STF1932B

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

Ephemeris of STF1932B

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.027    135.0
-------------------------
2000.0     0.045    135.0
2001.0     0.049    135.0
2002.0     0.053    135.0
2003.0     0.055    135.0
2004.0     0.057    135.0
2005.0     0.059    135.0
2006.0     0.059    135.0
2007.0     0.060    135.0
2008.0     0.060    135.0
2009.0     0.060    135.0
2010.0     0.059    135.0
2011.0     0.058    135.0
2012.0     0.057    135.0
2013.0     0.056    135.0
2014.0     0.055    135.0
2015.0     0.053    135.0
2016.0     0.051    135.0
2017.0     0.049    135.0
2018.0     0.047    135.0
2019.0     0.044    135.0
2020.0     0.042    135.0
2021.0     0.039    135.0
2022.0     0.036    135.0
2023.0     0.033    135.0
2024.0     0.030    135.0
2025.0     0.027    135.0
2026.0     0.024    135.0
2027.0     0.021    135.0
2028.0     0.017    135.0
2029.0     0.014    135.0
2030.0     0.010    135.0
2031.0     0.007    135.0
2032.0     0.003    135.0
2033.0     0.000    315.0
2034.0     0.004    315.0
2035.0     0.008    315.0
2036.0     0.011    315.0
2037.0     0.015    315.0
2038.0     0.018    315.0
2039.0     0.021    315.0
2040.0     0.023    315.0
2041.0     0.025    315.0
2042.0     0.026    315.0
2043.0     0.024    315.0
2044.0     0.019    315.0
2045.0     0.007    315.0
2046.0     0.008    135.0
2047.0     0.021    135.0
2048.0     0.031    135.0
2049.0     0.039    135.0

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.