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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:58:02

Orbital Elements for HDS2624

WDS:	HDS2624	WDS ID/Discoverer
P:	42.930	Orbital period (years)
a:	0.0979	Semi-major axis (arcseconds)
i:	144.5	Inclination (degrees)
Ω:	42.3	Longitude of ascending node (degrees)
T:	2007.530	Epoch of periastron passage (year)
e:	0.531	Eccentricity
ω:	14.0	Longitude of periastron (degrees)
Start-Year:	2004.0	Year
End-Year:	2046.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2624

Position:	183031.02-284742.9	Epoch-2000 right ascension and declination
WDS-ID:	18305-2848	WDS designation
Discoverer Code:	HDS2624	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	170415	HD catalog number
Hipparcos number:	90715	Hipparcos catalog number
V1:	8.47	Magnitude of the primary
V2:	8.71	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2624

WDS 6th Orbit including measures of HDS2624

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

Ephemeris of HDS2624

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.146    220.9
-------------------------
2004.0     0.056    110.1
2005.0     0.052     91.1
2006.0     0.049     69.1
2007.0     0.047     44.7
2008.0     0.045     18.0
2009.0     0.044    349.6
2010.0     0.048    322.9
2011.0     0.055    301.6
2012.0     0.064    285.8
2013.0     0.074    274.1
2014.0     0.084    265.1
2015.0     0.093    258.0
2016.0     0.102    252.1
2017.0     0.109    247.1
2018.0     0.117    242.8
2019.0     0.123    238.9
2020.0     0.129    235.4
2021.0     0.133    232.2
2022.0     0.138    229.2
2023.0     0.141    226.3
2024.0     0.144    223.6
2025.0     0.146    220.9
2026.0     0.148    218.4
2027.0     0.148    215.8
2028.0     0.149    213.3
2029.0     0.148    210.8
2030.0     0.147    208.3
2031.0     0.146    205.7
2032.0     0.144    203.1
2033.0     0.141    200.3
2034.0     0.138    197.5
2035.0     0.134    194.5
2036.0     0.130    191.3
2037.0     0.125    187.9
2038.0     0.119    184.1
2039.0     0.113    180.0
2040.0     0.106    175.4
2041.0     0.099    170.2
2042.0     0.092    164.1
2043.0     0.084    157.0
2044.0     0.077    148.4
2045.0     0.069    137.9

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.