Double Star Calculator - Orbit

Orbital Elements for A772

WDS:	A772	WDS ID/Discoverer
P:	138.700	Orbital period (years)
a:	0.198	Semi-major axis (arcseconds)
i:	152.7	Inclination (degrees)
Ω:	42.8	Longitude of ascending node (degrees)
T:	1999.560	Epoch of periastron passage (year)
e:	0.549	Eccentricity
ω:	233.7	Longitude of periastron (degrees)
Start-Year:	1955.65	Year
End-Year:	2094.35	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A772
Position:	213930.24+300922.2	Epoch-2000 right ascension and declination
WDS-ID:	21395+3009	WDS designation
Discoverer Code:	A772	Discover designation and components
ADS number:	15182	Aitken Double Star catalog
HD number:	206168	HD catalog number
Hipparcos number:	106940	Hipparcos catalog number
V1:	8.70	Magnitude of the primary
V2:	9.80	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:	Doc2011b	Reference

Double Star Orbit for A772

WDS 6th Orbit including measures of A772

-- 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 A772

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.218    37.82
--------------------------
1955.65    0.247   325.84
1956.65    0.244   324.58
1957.65    0.242   323.30
1958.65    0.239   321.99
1959.65    0.236   320.65
1960.65    0.233   319.28
1961.65    0.231   317.88
1962.65    0.228   316.44
1963.65    0.225   314.96
1964.65    0.222   313.45
1965.65    0.219   311.89
1966.65    0.215   310.28
1967.65    0.212   308.63
1968.65    0.209   306.93
1969.65    0.206   305.17
1970.65    0.202   303.35
1971.65    0.199   301.47
1972.65    0.195   299.52
1973.65    0.191   297.49
1974.65    0.188   295.39
1975.65    0.184   293.20
1976.65    0.180   290.92
1977.65    0.176   288.54
1978.65    0.172   286.05
1979.65    0.168   283.44
1980.65    0.164   280.71
1981.65    0.160   277.84
1982.65    0.156   274.81
1983.65    0.152   271.61
1984.65    0.147   268.23
1985.65    0.143   264.64
1986.65    0.139   260.83
1987.65    0.134   256.75
1988.65    0.129   252.40
1989.65    0.125   247.72
1990.65    0.120   242.68
1991.65    0.115   237.22
1992.65    0.111   231.30
1993.65    0.106   224.84
1994.65    0.101   217.78
1995.65    0.096   210.02
1996.65    0.092   201.52
1997.65    0.088   192.22
1998.65    0.085   182.14
1999.65    0.083   171.39
2000.65    0.082   160.20
2001.65    0.082   148.91
2002.65    0.084   137.90
2003.65    0.087   127.52
2004.65    0.091   117.98
2005.65    0.096   109.38
2006.65    0.102   101.71
2007.65    0.109    94.91
2008.65    0.115    88.87
2009.65    0.122    83.50
2010.65    0.129    78.69
2011.65    0.136    74.37
2012.65    0.142    70.46
2013.65    0.149    66.90
2014.65    0.155    63.63
2015.65    0.162    60.63
2016.65    0.168    57.84
2017.65    0.174    55.25
2018.65    0.179    52.83
2019.65    0.185    50.55
2020.65    0.190    48.41
2021.65    0.196    46.38
2022.65    0.201    44.45
2023.65    0.205    42.62
2024.65    0.210    40.87
2025.65    0.215    39.19
2026.65    0.219    37.58
2027.65    0.223    36.03
2028.65    0.227    34.54
2029.65    0.231    33.09
2030.65    0.234    31.70
2031.65    0.238    30.34
2032.65    0.241    29.02
2033.65    0.244    27.74
2034.65    0.248    26.50
2035.65    0.251    25.28
2036.65    0.253    24.09
2037.65    0.256    22.92
2038.65    0.259    21.78
2039.65    0.261    20.66
2040.65    0.263    19.56
2041.65    0.265    18.48
2042.65    0.268    17.41
2043.65    0.269    16.36
2044.65    0.271    15.33
2045.65    0.273    14.31
2046.65    0.275    13.30
2047.65    0.276    12.31
2048.65    0.277    11.32
2049.65    0.279    10.34
2050.65    0.280     9.37
2051.65    0.281     8.41
2052.65    0.282     7.46
2053.65    0.283     6.51
2054.65    0.284     5.57
2055.65    0.284     4.63
2056.65    0.285     3.70
2057.65    0.285     2.77
2058.65    0.286     1.85
2059.65    0.286     0.92
2060.65    0.286     0.00
2061.65    0.287   359.08
2062.65    0.287   358.16
2063.65    0.287   357.24
2064.65    0.286   356.32
2065.65    0.286   355.40
2066.65    0.286   354.47
2067.65    0.286   353.55
2068.65    0.285   352.62
2069.65    0.285   351.69
2070.65    0.284   350.75
2071.65    0.283   349.81
2072.65    0.282   348.87
2073.65    0.282   347.92
2074.65    0.281   346.96
2075.65    0.280   346.00
2076.65    0.279   345.03
2077.65    0.277   344.05
2078.65    0.276   343.06
2079.65    0.275   342.07
2080.65    0.273   341.06
2081.65    0.272   340.05
2082.65    0.270   339.02
2083.65    0.269   337.98
2084.65    0.267   336.92
2085.65    0.265   335.85
2086.65    0.263   334.77
2087.65    0.261   333.67
2088.65    0.259   332.56
2089.65    0.257   331.43
2090.65    0.255   330.28
2091.65    0.253   329.11
2092.65    0.251   327.91
2093.65    0.248   326.70

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 18:28:02