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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:31:50

Orbital Elements for SEE238BA,BB

WDS:	SEE238BA,BB	WDS ID/Discoverer
P:	61.130	Orbital period (years)
a:	0.255	Semi-major axis (arcseconds)
i:	39.8	Inclination (degrees)
Ω:	231.5	Longitude of ascending node (degrees)
T:	1999.030	Epoch of periastron passage (year)
e:	0.711	Eccentricity
ω:	104.8	Longitude of periastron (degrees)
Start-Year:	1995.0	Year
End-Year:	2055.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SEE238BA,BB

Position:	153308.94-242920.9	Epoch-2000 right ascension and declination
WDS-ID:	15332-2429	WDS designation
Discoverer Code:	SEE238BA,BB	Discover designation and components
ADS number:	9689	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	76143	Hipparcos catalog number
V1:	7.00	Magnitude of the primary
V2:	8.26	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SEE238BA,BB

WDS 6th Orbit including measures of SEE238BA,BB

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

Ephemeris of SEE238BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.332    152.2
-------------------------
1995.0     0.160    229.5
1996.0     0.133    239.2
1997.0     0.103    254.2
1998.0     0.071    282.8
1999.0     0.058    338.6
2000.0     0.079     26.7
2001.0     0.106     51.2
2002.0     0.130     66.1
2003.0     0.149     76.8
2004.0     0.166     85.1
2005.0     0.181     91.9
2006.0     0.195     97.7
2007.0     0.207    102.8
2008.0     0.219    107.4
2009.0     0.230    111.5
2010.0     0.240    115.3
2011.0     0.249    118.7
2012.0     0.258    122.0
2013.0     0.266    125.0
2014.0     0.274    127.8
2015.0     0.281    130.5
2016.0     0.288    133.0
2017.0     0.295    135.5
2018.0     0.301    137.8
2019.0     0.306    140.1
2020.0     0.312    142.2
2021.0     0.317    144.3
2022.0     0.321    146.4
2023.0     0.325    148.3
2024.0     0.329    150.3
2025.0     0.332    152.2
2026.0     0.335    154.0
2027.0     0.338    155.8
2028.0     0.340    157.6
2029.0     0.342    159.4
2030.0     0.343    161.2
2031.0     0.344    162.9
2032.0     0.345    164.7
2033.0     0.345    166.4
2034.0     0.345    168.2
2035.0     0.344    169.9
2036.0     0.343    171.7
2037.0     0.341    173.4
2038.0     0.339    175.2
2039.0     0.337    177.0
2040.0     0.334    178.9
2041.0     0.330    180.7
2042.0     0.326    182.7
2043.0     0.321    184.6
2044.0     0.315    186.7
2045.0     0.309    188.8
2046.0     0.302    191.0
2047.0     0.294    193.4
2048.0     0.285    195.8
2049.0     0.275    198.5
2050.0     0.264    201.3
2051.0     0.252    204.4
2052.0     0.238    207.9
2053.0     0.223    211.8
2054.0     0.206    216.3

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.