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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:07:49

Orbital Elements for HDS1672

WDS:	HDS1672	WDS ID/Discoverer
P:	53.240	Orbital period (years)
a:	0.332	Semi-major axis (arcseconds)
i:	42.0	Inclination (degrees)
Ω:	236.4	Longitude of ascending node (degrees)
T:	2008.921	Epoch of periastron passage (year)
e:	0.784	Eccentricity
ω:	100.0	Longitude of periastron (degrees)
Start-Year:	1999.0	Year
End-Year:	2051.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1672

Position:	115124.85+114818.6	Epoch-2000 right ascension and declination
WDS-ID:	11514+1148	WDS designation
Discoverer Code:	HDS1672	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	102988	HD catalog number
Hipparcos number:	57821	Hipparcos catalog number
V1:	7.18	Magnitude of the primary
V2:	10.92	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1672

WDS 6th Orbit including measures of HDS1672

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

Ephemeris of HDS1672

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.393    139.7
-------------------------
1999.0     0.355    192.5
2000.0     0.340    195.3
2001.0     0.322    198.5
2002.0     0.303    202.0
2003.0     0.281    206.0
2004.0     0.255    210.8
2005.0     0.225    216.8
2006.0     0.190    224.8
2007.0     0.146    237.0
2008.0     0.091    262.5
2009.0     0.055    348.9
2010.0     0.105     51.7
2011.0     0.149     73.4
2012.0     0.183     86.0
2013.0     0.211     94.9
2014.0     0.235    101.8
2015.0     0.257    107.5
2016.0     0.276    112.3
2017.0     0.294    116.5
2018.0     0.310    120.3
2019.0     0.325    123.7
2020.0     0.338    126.9
2021.0     0.351    129.7
2022.0     0.363    132.4
2023.0     0.374    135.0
2024.0     0.384    137.4
2025.0     0.393    139.7
2026.0     0.401    141.8
2027.0     0.409    143.9
2028.0     0.416    146.0
2029.0     0.422    147.9
2030.0     0.427    149.8
2031.0     0.432    151.7
2032.0     0.436    153.5
2033.0     0.440    155.3
2034.0     0.443    157.1
2035.0     0.445    158.8
2036.0     0.446    160.5
2037.0     0.447    162.3
2038.0     0.447    164.0
2039.0     0.446    165.7
2040.0     0.445    167.4
2041.0     0.443    169.2
2042.0     0.440    171.0
2043.0     0.436    172.8
2044.0     0.431    174.6
2045.0     0.426    176.5
2046.0     0.420    178.4
2047.0     0.412    180.4
2048.0     0.404    182.4
2049.0     0.394    184.6
2050.0     0.384    186.9

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.