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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:25:59

Orbital Elements for STT285AB

WDS:	STT285AB	WDS ID/Discoverer
P:	88.933	Orbital period (years)
a:	0.327	Semi-major axis (arcseconds)
i:	164.5	Inclination (degrees)
Ω:	71.4	Longitude of ascending node (degrees)
T:	2060.738	Epoch of periastron passage (year)
e:	0.5232	Eccentricity
ω:	171.0	Longitude of periastron (degrees)
Start-Year:	1981.0	Year
End-Year:	2069.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT285AB

Position:	144529.74+422256.4	Epoch-2000 right ascension and declination
WDS-ID:	14455+4223	WDS designation
Discoverer Code:	STT285AB	Discover designation and components
ADS number:	9378	Aitken Double Star catalog
HD number:	130188	HD catalog number
Hipparcos number:	72153	Hipparcos catalog number
V1:	7.75	Magnitude of the primary
V2:	8.66	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STT285AB

WDS 6th Orbit including measures of STT285AB

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

Ephemeris of STT285AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.484     67.3
-------------------------
1981.0     0.243    163.9
1982.0     0.257    158.3
1983.0     0.270    153.1
1984.0     0.284    148.5
1985.0     0.296    144.3
1986.0     0.309    140.4
1987.0     0.321    136.8
1988.0     0.333    133.5
1989.0     0.345    130.4
1990.0     0.356    127.5
1991.0     0.366    124.8
1992.0     0.377    122.2
1993.0     0.387    119.8
1994.0     0.396    117.4
1995.0     0.405    115.2
1996.0     0.413    113.1
1997.0     0.421    111.1
1998.0     0.429    109.1
1999.0     0.436    107.2
2000.0     0.443    105.4
2001.0     0.450    103.6
2002.0     0.456    101.8
2003.0     0.461    100.1
2004.0     0.466     98.5
2005.0     0.471     96.9
2006.0     0.476     95.3
2007.0     0.480     93.7
2008.0     0.483     92.2
2009.0     0.486     90.7
2010.0     0.489     89.2
2011.0     0.491     87.7
2012.0     0.493     86.2
2013.0     0.495     84.8
2014.0     0.496     83.3
2015.0     0.497     81.9
2016.0     0.498     80.5
2017.0     0.498     79.0
2018.0     0.497     77.6
2019.0     0.497     76.2
2020.0     0.495     74.7
2021.0     0.494     73.3
2022.0     0.492     71.8
2023.0     0.490     70.3
2024.0     0.487     68.8
2025.0     0.484     67.3
2026.0     0.480     65.8
2027.0     0.476     64.2
2028.0     0.472     62.7
2029.0     0.467     61.1
2030.0     0.462     59.4
2031.0     0.457     57.7
2032.0     0.451     56.0
2033.0     0.444     54.2
2034.0     0.437     52.4
2035.0     0.430     50.5
2036.0     0.422     48.5
2037.0     0.414     46.5
2038.0     0.405     44.4
2039.0     0.396     42.2
2040.0     0.386     39.8
2041.0     0.376     37.4
2042.0     0.366     34.8
2043.0     0.355     32.1
2044.0     0.343     29.2
2045.0     0.331     26.0
2046.0     0.319     22.7
2047.0     0.306     19.0
2048.0     0.293     15.1
2049.0     0.280     10.8
2050.0     0.266      6.0
2051.0     0.252      0.7
2052.0     0.238    354.7
2053.0     0.224    348.0
2054.0     0.210    340.4
2055.0     0.197    331.8
2056.0     0.185    322.1
2057.0     0.174    311.0
2058.0     0.166    298.7
2059.0     0.160    285.2
2060.0     0.156    270.9
2061.0     0.156    256.2
2062.0     0.159    241.8
2063.0     0.164    228.2
2064.0     0.172    215.5
2065.0     0.181    204.1
2066.0     0.193    193.9
2067.0     0.205    184.9
2068.0     0.218    176.9

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.