Double Star Calculator - Orbit

Orbital Elements for HDS785

WDS:	HDS785	WDS ID/Discoverer
P:	105.600	Orbital period (years)
a:	0.208	Semi-major axis (arcseconds)
i:	118.0	Inclination (degrees)
Ω:	170.2	Longitude of ascending node (degrees)
T:	2021.900	Epoch of periastron passage (year)
e:	0.65	Eccentricity
ω:	147.9	Longitude of periastron (degrees)
Start-Year:	1972.2	Year
End-Year:	2077.8	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS785
Position:	055032.10-031004.8	Epoch-2000 right ascension and declination
WDS-ID:	05505-0310	WDS designation
Discoverer Code:	HDS785	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.53	Magnitude of the primary
V2:	9.57	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2019c	Reference

Double Star Orbit for HDS785

WDS 6th Orbit including measures of HDS785

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

Legend:

Green plus signs:	Visual (micrometric) measures
Violet asterisks:	Photographic measures
Blue symbols:	Various interferometric techniques
Dot-dash line:	Indicates the line of nodes

Ephemeris of HDS785

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.082   326.28
--------------------------
1972.20    0.309   184.87
1973.20    0.311   184.32
1974.20    0.312   183.78
1975.20    0.313   183.24
1976.20    0.314   182.70
1977.20    0.314   182.17
1978.20    0.315   181.64
1979.20    0.315   181.11
1980.20    0.315   180.58
1981.20    0.314   180.04
1982.20    0.314   179.51
1983.20    0.313   178.98
1984.20    0.312   178.44
1985.20    0.310   177.89
1986.20    0.309   177.34
1987.20    0.307   176.79
1988.20    0.304   176.22
1989.20    0.302   175.65
1990.20    0.299   175.07
1991.20    0.296   174.48
1992.20    0.293   173.87
1993.20    0.289   173.24
1994.20    0.285   172.60
1995.20    0.280   171.94
1996.20    0.275   171.26
1997.20    0.270   170.55
1998.20    0.264   169.82
1999.20    0.258   169.05
2000.20    0.252   168.24
2001.20    0.245   167.38
2002.20    0.238   166.48
2003.20    0.230   165.52
2004.20    0.221   164.48
2005.20    0.212   163.36
2006.20    0.203   162.14
2007.20    0.193   160.80
2008.20    0.182   159.30
2009.20    0.171   157.61
2010.20    0.159   155.66
2011.20    0.146   153.39
2012.20    0.132   150.66
2013.20    0.118   147.29
2014.20    0.103   142.96
2015.20    0.087   137.12
2016.20    0.072   128.74
2017.20    0.057   115.87
2018.20    0.046    95.29
2019.20    0.041    66.06
2020.20    0.046    37.21
2021.20    0.056    16.74
2022.20    0.067     2.97
2023.20    0.076   352.74
2024.20    0.081   344.18
2025.20    0.083   336.32
2026.20    0.082   328.61
2027.20    0.081   320.75
2028.20    0.080   312.61
2029.20    0.078   304.15
2030.20    0.078   295.45
2031.20    0.078   286.70
2032.20    0.079   278.12
2033.20    0.081   269.93
2034.20    0.085   262.32
2035.20    0.089   255.37
2036.20    0.094   249.13
2037.20    0.100   243.57
2038.20    0.106   238.63
2039.20    0.113   234.26
2040.20    0.120   230.38
2041.20    0.127   226.92
2042.20    0.134   223.83
2043.20    0.141   221.05
2044.20    0.148   218.55
2045.20    0.156   216.27
2046.20    0.163   214.19
2047.20    0.170   212.29
2048.20    0.177   210.54
2049.20    0.184   208.92
2050.20    0.190   207.41
2051.20    0.197   206.01
2052.20    0.203   204.69
2053.20    0.210   203.46
2054.20    0.216   202.30
2055.20    0.222   201.20
2056.20    0.228   200.16
2057.20    0.233   199.17
2058.20    0.239   198.23
2059.20    0.244   197.33
2060.20    0.249   196.46
2061.20    0.254   195.63
2062.20    0.259   194.83
2063.20    0.264   194.06
2064.20    0.268   193.32
2065.20    0.272   192.60
2066.20    0.277   191.90
2067.20    0.280   191.22
2068.20    0.284   190.56
2069.20    0.288   189.92
2070.20    0.291   189.29
2071.20    0.294   188.67
2072.20    0.297   188.07
2073.20    0.299   187.48
2074.20    0.302   186.90
2075.20    0.304   186.32
2076.20    0.306   185.76
2077.20    0.308   185.20

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This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.

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.

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Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 15:41:24