Double Star Calculator - Orbit

Orbital Elements for STF3123AB

WDS:	STF3123AB	WDS ID/Discoverer
P:	122.300	Orbital period (years)
a:	0.2959	Semi-major axis (arcseconds)
i:	143.2	Inclination (degrees)
Ω:	284.8	Longitude of ascending node (degrees)
T:	1981.490	Epoch of periastron passage (year)
e:	0.4859	Eccentricity
ω:	303.8	Longitude of periastron (degrees)
Start-Year:	1963.85	Year
End-Year:	2086.15	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF3123AB
Position:	120601.37+684155.5	Epoch-2000 right ascension and declination
WDS-ID:	12060+6842	WDS designation
Discoverer Code:	STF3123AB	Discover designation and components
ADS number:	8419	Aitken Double Star catalog
HD number:	105122	HD catalog number
Hipparcos number:	59017	Hipparcos catalog number
V1:	8.01	Magnitude of the primary
V2:	7.90	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Hrt1996a	Reference

Double Star Orbit for STF3123AB

WDS 6th Orbit including measures of STF3123AB

-- 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 STF3123AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.340   177.12
--------------------------
1963.85    0.266    93.06
1964.85    0.257    90.42
1965.85    0.247    87.57
1966.85    0.237    84.49
1967.85    0.226    81.12
1968.85    0.215    77.42
1969.85    0.204    73.32
1970.85    0.193    68.75
1971.85    0.182    63.61
1972.85    0.171    57.80
1973.85    0.160    51.19
1974.85    0.150    43.67
1975.85    0.141    35.14
1976.85    0.134    25.59
1977.85    0.129    15.14
1978.85    0.127     4.05
1979.85    0.127   352.75
1980.85    0.129   341.68
1981.85    0.134   331.22
1982.85    0.140   321.58
1983.85    0.147   312.83
1984.85    0.155   304.91
1985.85    0.163   297.75
1986.85    0.170   291.23
1987.85    0.177   285.25
1988.85    0.184   279.74
1989.85    0.191   274.60
1990.85    0.197   269.80
1991.85    0.202   265.27
1992.85    0.208   260.98
1993.85    0.213   256.90
1994.85    0.218   253.00
1995.85    0.222   249.27
1996.85    0.227   245.69
1997.85    0.231   242.24
1998.85    0.235   238.92
1999.85    0.239   235.71
2000.85    0.243   232.62
2001.85    0.247   229.62
2002.85    0.251   226.72
2003.85    0.255   223.91
2004.85    0.259   221.18
2005.85    0.263   218.53
2006.85    0.267   215.97
2007.85    0.271   213.47
2008.85    0.275   211.05
2009.85    0.279   208.69
2010.85    0.282   206.40
2011.85    0.286   204.17
2012.85    0.290   202.00
2013.85    0.294   199.89
2014.85    0.298   197.83
2015.85    0.302   195.82
2016.85    0.305   193.86
2017.85    0.309   191.95
2018.85    0.313   190.08
2019.85    0.316   188.26
2020.85    0.320   186.48
2021.85    0.324   184.74
2022.85    0.327   183.04
2023.85    0.331   181.37
2024.85    0.334   179.74
2025.85    0.338   178.14
2026.85    0.341   176.57
2027.85    0.344   175.03
2028.85    0.347   173.52
2029.85    0.350   172.04
2030.85    0.353   170.58
2031.85    0.356   169.15
2032.85    0.359   167.74
2033.85    0.362   166.35
2034.85    0.364   164.98
2035.85    0.367   163.63
2036.85    0.369   162.30
2037.85    0.372   160.99
2038.85    0.374   159.69
2039.85    0.376   158.41
2040.85    0.378   157.14
2041.85    0.380   155.89
2042.85    0.382   154.64
2043.85    0.383   153.41
2044.85    0.385   152.19
2045.85    0.386   150.97
2046.85    0.387   149.77
2047.85    0.388   148.57
2048.85    0.389   147.38
2049.85    0.390   146.19
2050.85    0.391   145.01
2051.85    0.391   143.82
2052.85    0.391   142.65
2053.85    0.392   141.47
2054.85    0.391   140.29
2055.85    0.391   139.12
2056.85    0.391   137.94
2057.85    0.390   136.75
2058.85    0.389   135.57
2059.85    0.388   134.37
2060.85    0.387   133.17
2061.85    0.386   131.97
2062.85    0.384   130.75
2063.85    0.382   129.52
2064.85    0.380   128.28
2065.85    0.378   127.02
2066.85    0.375   125.75
2067.85    0.372   124.46
2068.85    0.369   123.15
2069.85    0.366   121.81
2070.85    0.362   120.45
2071.85    0.358   119.07
2072.85    0.354   117.65
2073.85    0.350   116.19
2074.85    0.345   114.69
2075.85    0.340   113.16
2076.85    0.334   111.57
2077.85    0.329   109.93
2078.85    0.322   108.23
2079.85    0.316   106.45
2080.85    0.309   104.61
2081.85    0.302   102.67
2082.85    0.294   100.64
2083.85    0.286    98.50
2084.85    0.278    96.23
2085.85    0.269    93.81

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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.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 16:43:37