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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:32:25

Orbital Elements for STT298AB

WDS:	STT298AB	WDS ID/Discoverer
P:	55.452	Orbital period (years)
a:	0.78322	Semi-major axis (arcseconds)
i:	63.51	Inclination (degrees)
Ω:	0.352	Longitude of ascending node (degrees)
T:	1938.495	Epoch of periastron passage (year)
e:	0.5844	Eccentricity
ω:	23.236	Longitude of periastron (degrees)
Start-Year:	1998.0	Year
End-Year:	2052.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT298AB

Position:	153602.22+394808.9	Epoch-2000 right ascension and declination
WDS-ID:	15360+3948	WDS designation
Discoverer Code:	STT298AB	Discover designation and components
ADS number:	9716	Aitken Double Star catalog
HD number:	139341	HD catalog number
Hipparcos number:	76382	Hipparcos catalog number
V1:	7.16	Magnitude of the primary
V2:	8.44	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 STT298AB

WDS 6th Orbit including measures of STT298AB

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

Ephemeris of STT298AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.096    194.9
-------------------------
1998.0     0.283    132.2
1999.0     0.377    145.8
2000.0     0.472    153.9
2001.0     0.562    159.3
2002.0     0.645    163.3
2003.0     0.721    166.3
2004.0     0.789    168.9
2005.0     0.852    171.0
2006.0     0.908    172.9
2007.0     0.958    174.5
2008.0     1.002    176.0
2009.0     1.041    177.4
2010.0     1.075    178.7
2011.0     1.104    179.9
2012.0     1.129    181.1
2013.0     1.149    182.2
2014.0     1.165    183.3
2015.0     1.177    184.3
2016.0     1.185    185.3
2017.0     1.189    186.4
2018.0     1.190    187.4
2019.0     1.187    188.4
2020.0     1.180    189.4
2021.0     1.170    190.5
2022.0     1.156    191.5
2023.0     1.139    192.6
2024.0     1.119    193.8
2025.0     1.096    194.9
2026.0     1.069    196.2
2027.0     1.040    197.5
2028.0     1.007    198.8
2029.0     0.971    200.3
2030.0     0.933    201.9
2031.0     0.891    203.6
2032.0     0.846    205.6
2033.0     0.799    207.7
2034.0     0.749    210.1
2035.0     0.697    212.8
2036.0     0.643    216.1
2037.0     0.587    219.9
2038.0     0.530    224.5
2039.0     0.473    230.3
2040.0     0.417    237.6
2041.0     0.366    247.0
2042.0     0.323    259.3
2043.0     0.293    274.7
2044.0     0.281    292.5
2045.0     0.289    310.4
2046.0     0.311    326.5
2047.0     0.335    340.3
2048.0     0.344    352.7
2049.0     0.323      5.4
2050.0     0.267     21.8
2051.0     0.203     48.7

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.