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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:04:02

Orbital Elements for HDS613

WDS:	HDS613	WDS ID/Discoverer
P:	55.000	Orbital period (years)
a:	0.242	Semi-major axis (arcseconds)
i:	104.1	Inclination (degrees)
Ω:	47.9	Longitude of ascending node (degrees)
T:	2033.400	Epoch of periastron passage (year)
e:	0.362	Eccentricity
ω:	99.0	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 HDS613

Position:	044559.13-660443.6	Epoch-2000 right ascension and declination
WDS-ID:	04460-6605	WDS designation
Discoverer Code:	HDS613	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	30805	HD catalog number
Hipparcos number:	22150	Hipparcos catalog number
V1:	8.12	Magnitude of the primary
V2:	8.35	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS613

WDS 6th Orbit including measures of HDS613

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

Ephemeris of HDS613

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.219     47.3
-------------------------
1998.0     0.120    191.1
1999.0     0.108    184.4
2000.0     0.097    176.1
2001.0     0.088    165.8
2002.0     0.082    153.7
2003.0     0.080    140.3
2004.0     0.081    126.8
2005.0     0.087    114.4
2006.0     0.096    103.9
2007.0     0.106     95.3
2008.0     0.118     88.4
2009.0     0.131     82.8
2010.0     0.145     78.2
2011.0     0.158     74.4
2012.0     0.171     71.2
2013.0     0.183     68.4
2014.0     0.195     65.9
2015.0     0.206     63.8
2016.0     0.215     61.8
2017.0     0.224     60.0
2018.0     0.231     58.3
2019.0     0.236     56.7
2020.0     0.240     55.2
2021.0     0.241     53.7
2022.0     0.240     52.2
2023.0     0.236     50.6
2024.0     0.229     49.0
2025.0     0.219     47.3
2026.0     0.206     45.4
2027.0     0.188     43.1
2028.0     0.166     40.4
2029.0     0.140     36.6
2030.0     0.111     31.1
2031.0     0.079     21.2
2032.0     0.049    358.4
2033.0     0.038    305.7
2034.0     0.060    264.8
2035.0     0.091    248.7
2036.0     0.122    240.9
2037.0     0.148    236.1
2038.0     0.171    232.7
2039.0     0.188    230.0
2040.0     0.200    227.7
2041.0     0.208    225.6
2042.0     0.212    223.6
2043.0     0.213    221.7
2044.0     0.211    219.8
2045.0     0.207    217.8
2046.0     0.200    215.7
2047.0     0.191    213.4
2048.0     0.181    210.9
2049.0     0.170    208.1
2050.0     0.158    204.9
2051.0     0.146    201.1

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.