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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:32:36

Orbital Elements for HDS3158

WDS:	HDS3158	WDS ID/Discoverer
P:	53.035	Orbital period (years)
a:	0.293	Semi-major axis (arcseconds)
i:	19.877	Inclination (degrees)
Ω:	261.708	Longitude of ascending node (degrees)
T:	1989.717	Epoch of periastron passage (year)
e:	0.421	Eccentricity
ω:	49.694	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 HDS3158

Position:	221606.58-070526.6	Epoch-2000 right ascension and declination
WDS-ID:	22161-0705	WDS designation
Discoverer Code:	HDS3158	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	211276	HD catalog number
Hipparcos number:	109951	Hipparcos catalog number
V1:	8.97	Magnitude of the primary
V2:	10.89	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS3158

WDS 6th Orbit including measures of HDS3158

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

Ephemeris of HDS3158

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.361    158.9
-------------------------
1999.0     0.285     64.7
2000.0     0.301     70.5
2001.0     0.315     75.7
2002.0     0.328     80.5
2003.0     0.340     85.0
2004.0     0.351     89.1
2005.0     0.361     93.1
2006.0     0.369     96.8
2007.0     0.377    100.4
2008.0     0.384    103.8
2009.0     0.389    107.1
2010.0     0.394    110.4
2011.0     0.397    113.5
2012.0     0.400    116.7
2013.0     0.402    119.7
2014.0     0.403    122.8
2015.0     0.403    125.9
2016.0     0.402    128.9
2017.0     0.401    132.0
2018.0     0.399    135.1
2019.0     0.395    138.3
2020.0     0.392    141.5
2021.0     0.387    144.8
2022.0     0.382    148.1
2023.0     0.376    151.6
2024.0     0.369    155.2
2025.0     0.361    158.9
2026.0     0.353    162.8
2027.0     0.344    166.9
2028.0     0.335    171.2
2029.0     0.325    175.8
2030.0     0.314    180.6
2031.0     0.303    185.8
2032.0     0.291    191.5
2033.0     0.279    197.6
2034.0     0.267    204.2
2035.0     0.254    211.6
2036.0     0.240    219.7
2037.0     0.227    228.9
2038.0     0.213    239.1
2039.0     0.200    250.8
2040.0     0.187    264.1
2041.0     0.176    279.1
2042.0     0.168    296.0
2043.0     0.163    314.3
2044.0     0.164    332.9
2045.0     0.171    350.7
2046.0     0.183      6.7
2047.0     0.198     20.4
2048.0     0.215     32.1
2049.0     0.233     42.0
2050.0     0.251     50.5

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.