Double Star Calculator - Orbit

Orbital Elements for HU718

WDS:	HU718	WDS ID/Discoverer
P:	139.765	Orbital period (years)
a:	0.552	Semi-major axis (arcseconds)
i:	102.1	Inclination (degrees)
Ω:	34.3	Longitude of ascending node (degrees)
T:	2019.142	Epoch of periastron passage (year)
e:	0.783	Eccentricity
ω:	79.3	Longitude of periastron (degrees)
Start-Year:	1955.1175	Year
End-Year:	2094.8825	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU718
Position:	090030.68+322503.2	Epoch-2000 right ascension and declination
WDS-ID:	09005+3225	WDS designation
Discoverer Code:	HU718	Discover designation and components
ADS number:	7124	Aitken Double Star catalog
HD number:	76975	HD catalog number
Hipparcos number:	44230	Hipparcos catalog number
V1:	9.30	Magnitude of the primary
V2:	9.49	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	FMR2015b	Reference

Double Star Orbit for HU718

WDS 6th Orbit including measures of HU718

-- 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 HU718

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.304   211.52
--------------------------
1955.12    0.242   157.25
1956.12    0.238   155.48
1957.12    0.233   153.63
1958.12    0.228   151.71
1959.12    0.224   149.71
1960.12    0.220   147.63
1961.12    0.216   145.48
1962.12    0.213   143.25
1963.12    0.209   140.95
1964.12    0.206   138.57
1965.12    0.203   136.13
1966.12    0.201   133.62
1967.12    0.198   131.04
1968.12    0.196   128.41
1969.12    0.195   125.74
1970.12    0.194   123.02
1971.12    0.193   120.28
1972.12    0.192   117.52
1973.12    0.192   114.75
1974.12    0.192   111.97
1975.12    0.193   109.21
1976.12    0.194   106.47
1977.12    0.195   103.77
1978.12    0.197   101.10
1979.12    0.199    98.48
1980.12    0.201    95.91
1981.12    0.203    93.40
1982.12    0.206    90.95
1983.12    0.209    88.58
1984.12    0.212    86.27
1985.12    0.216    84.03
1986.12    0.219    81.87
1987.12    0.223    79.78
1988.12    0.227    77.75
1989.12    0.231    75.80
1990.12    0.235    73.91
1991.12    0.239    72.09
1992.12    0.243    70.32
1993.12    0.247    68.62
1994.12    0.251    66.97
1995.12    0.255    65.37
1996.12    0.259    63.83
1997.12    0.263    62.32
1998.12    0.266    60.86
1999.12    0.270    59.44
2000.12    0.273    58.04
2001.12    0.276    56.68
2002.12    0.278    55.35
2003.12    0.280    54.03
2004.12    0.281    52.73
2005.12    0.282    51.44
2006.12    0.282    50.16
2007.12    0.281    48.87
2008.12    0.280    47.57
2009.12    0.276    46.25
2010.12    0.272    44.89
2011.12    0.265    43.47
2012.12    0.257    41.97
2013.12    0.245    40.35
2014.12    0.229    38.53
2015.12    0.208    36.39
2016.12    0.180    33.68
2017.12    0.142    29.73
2018.12    0.091    21.99
2019.12    0.034   348.53
2020.12    0.052   242.93
2021.12    0.111   225.49
2022.12    0.163   219.90
2023.12    0.205   216.86
2024.12    0.241   214.80
2025.12    0.270   213.23
2026.12    0.296   211.95
2027.12    0.317   210.87
2028.12    0.336   209.91
2029.12    0.352   209.04
2030.12    0.366   208.25
2031.12    0.379   207.51
2032.12    0.390   206.82
2033.12    0.399   206.16
2034.12    0.408   205.53
2035.12    0.415   204.93
2036.12    0.421   204.35
2037.12    0.427   203.78
2038.12    0.432   203.22
2039.12    0.436   202.68
2040.12    0.439   202.14
2041.12    0.442   201.61
2042.12    0.444   201.09
2043.12    0.445   200.57
2044.12    0.447   200.06
2045.12    0.447   199.55
2046.12    0.448   199.04
2047.12    0.448   198.52
2048.12    0.447   198.01
2049.12    0.446   197.50
2050.12    0.445   196.99
2051.12    0.444   196.47
2052.12    0.442   195.95
2053.12    0.440   195.42
2054.12    0.438   194.89
2055.12    0.435   194.35
2056.12    0.433   193.81
2057.12    0.430   193.26
2058.12    0.426   192.70
2059.12    0.423   192.13
2060.12    0.420   191.56
2061.12    0.416   190.97
2062.12    0.412   190.37
2063.12    0.408   189.76
2064.12    0.404   189.14
2065.12    0.399   188.51
2066.12    0.395   187.86
2067.12    0.390   187.20
2068.12    0.386   186.52
2069.12    0.381   185.82
2070.12    0.376   185.11
2071.12    0.371   184.37
2072.12    0.366   183.62
2073.12    0.361   182.84
2074.12    0.355   182.04
2075.12    0.350   181.22
2076.12    0.345   180.37
2077.12    0.339   179.50
2078.12    0.334   178.59
2079.12    0.328   177.66
2080.12    0.323   176.69
2081.12    0.317   175.69
2082.12    0.311   174.65
2083.12    0.306   173.58
2084.12    0.300   172.46
2085.12    0.295   171.31
2086.12    0.289   170.10
2087.12    0.283   168.86
2088.12    0.278   167.56
2089.12    0.272   166.20
2090.12    0.267   164.80
2091.12    0.262   163.33
2092.12    0.256   161.81
2093.12    0.251   160.22
2094.12    0.246   158.56

Disclaimer

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.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 16:13:26