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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:22:40

Orbital Elements for HDS102

WDS:	HDS102	WDS ID/Discoverer
P:	83.890	Orbital period (years)
a:	0.336	Semi-major axis (arcseconds)
i:	113.4	Inclination (degrees)
Ω:	51.3	Longitude of ascending node (degrees)
T:	2016.700	Epoch of periastron passage (year)
e:	0.783	Eccentricity
ω:	61.3	Longitude of periastron (degrees)
Start-Year:	1984.0	Year
End-Year:	2066.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS102

Position:	004656.67+433847.2	Epoch-2000 right ascension and declination
WDS-ID:	00469+4339	WDS designation
Discoverer Code:	HDS102	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	3669	Hipparcos catalog number
V1:	10.12	Magnitude of the primary
V2:	11.65	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS102

WDS 6th Orbit including measures of HDS102

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

Ephemeris of HDS102

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.280    224.8
-------------------------
1984.0     0.297    185.0
1985.0     0.290    183.6
1986.0     0.283    182.1
1987.0     0.275    180.6
1988.0     0.267    178.9
1989.0     0.260    177.2
1990.0     0.252    175.4
1991.0     0.244    173.4
1992.0     0.236    171.4
1993.0     0.228    169.1
1994.0     0.220    166.8
1995.0     0.212    164.2
1996.0     0.204    161.4
1997.0     0.197    158.5
1998.0     0.189    155.2
1999.0     0.182    151.8
2000.0     0.175    148.0
2001.0     0.169    144.0
2002.0     0.163    139.6
2003.0     0.157    134.9
2004.0     0.152    129.9
2005.0     0.148    124.6
2006.0     0.144    118.9
2007.0     0.141    113.0
2008.0     0.139    106.9
2009.0     0.137    100.6
2010.0     0.135     94.1
2011.0     0.133     87.4
2012.0     0.131     80.6
2013.0     0.127     73.5
2014.0     0.119     65.6
2015.0     0.104     56.2
2016.0     0.074     41.2
2017.0     0.033    349.3
2018.0     0.060    263.1
2019.0     0.109    245.1
2020.0     0.151    237.9
2021.0     0.186    233.7
2022.0     0.215    230.7
2023.0     0.240    228.4
2024.0     0.261    226.4
2025.0     0.280    224.8
2026.0     0.296    223.4
2027.0     0.311    222.1
2028.0     0.324    220.9
2029.0     0.335    219.8
2030.0     0.346    218.8
2031.0     0.355    217.8
2032.0     0.362    216.8
2033.0     0.369    216.0
2034.0     0.376    215.1
2035.0     0.381    214.3
2036.0     0.385    213.4
2037.0     0.389    212.6
2038.0     0.392    211.9
2039.0     0.395    211.1
2040.0     0.397    210.3
2041.0     0.398    209.6
2042.0     0.399    208.8
2043.0     0.399    208.1
2044.0     0.399    207.3
2045.0     0.399    206.6
2046.0     0.398    205.8
2047.0     0.397    205.0
2048.0     0.395    204.3
2049.0     0.393    203.5
2050.0     0.390    202.7
2051.0     0.387    201.9
2052.0     0.384    201.1
2053.0     0.381    200.3
2054.0     0.377    199.5
2055.0     0.373    198.6
2056.0     0.368    197.8
2057.0     0.364    196.9
2058.0     0.359    195.9
2059.0     0.354    195.0
2060.0     0.348    194.0
2061.0     0.342    193.0
2062.0     0.336    192.0
2063.0     0.330    190.9
2064.0     0.324    189.8
2065.0     0.317    188.6

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.