Double Star Calculator - Orbit

Orbital Elements for STT122

WDS:	STT122	WDS ID/Discoverer
P:	217.740	Orbital period (years)
a:	0.376	Semi-major axis (arcseconds)
i:	64.9	Inclination (degrees)
Ω:	62.1	Longitude of ascending node (degrees)
T:	1966.950	Epoch of periastron passage (year)
e:	0.844	Eccentricity
ω:	249.9	Longitude of periastron (degrees)
Start-Year:	1916.13	Year
End-Year:	2133.87	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT122
Position:	055550.25+365612.1	Epoch-2000 right ascension and declination
WDS-ID:	05558+3656	WDS designation
Discoverer Code:	STT122	Discover designation and components
ADS number:	4505	Aitken Double Star catalog
HD number:	39697	HD catalog number
Hipparcos number:	28043	Hipparcos catalog number
V1:	7.80	Magnitude of the primary
V2:	8.49	Magnitude of the secondary
Equinox:		Equinox
Date:	1988	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Lin1990a	Reference

Double Star Orbit for STT122

WDS 6th Orbit including measures of STT122

-- 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 STT122

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.395    93.94
--------------------------
1916.13    0.236   146.12
1917.13    0.233   147.08
1918.13    0.231   148.07
1919.13    0.228   149.08
1920.13    0.226   150.11
1921.13    0.223   151.16
1922.13    0.221   152.24
1923.13    0.218   153.34
1924.13    0.216   154.47
1925.13    0.213   155.62
1926.13    0.211   156.80
1927.13    0.209   158.01
1928.13    0.206   159.25
1929.13    0.204   160.51
1930.13    0.201   161.81
1931.13    0.199   163.13
1932.13    0.197   164.49
1933.13    0.194   165.88
1934.13    0.192   167.31
1935.13    0.190   168.76
1936.13    0.188   170.26
1937.13    0.185   171.79
1938.13    0.183   173.35
1939.13    0.181   174.96
1940.13    0.179   176.60
1941.13    0.177   178.28
1942.13    0.175   180.01
1943.13    0.172   181.78
1944.13    0.170   183.59
1945.13    0.168   185.44
1946.13    0.166   187.35
1947.13    0.164   189.30
1948.13    0.162   191.31
1949.13    0.160   193.37
1950.13    0.157   195.48
1951.13    0.155   197.66
1952.13    0.153   199.90
1953.13    0.150   202.22
1954.13    0.148   204.62
1955.13    0.145   207.10
1956.13    0.142   209.69
1957.13    0.138   212.40
1958.13    0.135   215.26
1959.13    0.130   218.29
1960.13    0.125   221.56
1961.13    0.119   225.14
1962.13    0.111   229.15
1963.13    0.102   233.84
1964.13    0.089   239.68
1965.13    0.072   247.88
1966.13    0.050   262.45
1967.13    0.028   302.49
1968.13    0.034    12.31
1969.13    0.060    38.47
1970.13    0.086    48.75
1971.13    0.108    54.47
1972.13    0.128    58.29
1973.13    0.146    61.14
1974.13    0.162    63.39
1975.13    0.176    65.26
1976.13    0.189    66.85
1977.13    0.201    68.25
1978.13    0.212    69.49
1979.13    0.223    70.61
1980.13    0.233    71.64
1981.13    0.242    72.58
1982.13    0.250    73.46
1983.13    0.258    74.29
1984.13    0.266    75.06
1985.13    0.273    75.79
1986.13    0.280    76.49
1987.13    0.286    77.15
1988.13    0.292    77.79
1989.13    0.298    78.40
1990.13    0.304    78.99
1991.13    0.309    79.56
1992.13    0.314    80.11
1993.13    0.319    80.64
1994.13    0.323    81.15
1995.13    0.327    81.66
1996.13    0.332    82.15
1997.13    0.336    82.62
1998.13    0.339    83.09
1999.13    0.343    83.55
2000.13    0.346    84.00
2001.13    0.350    84.43
2002.13    0.353    84.87
2003.13    0.356    85.29
2004.13    0.359    85.71
2005.13    0.361    86.12
2006.13    0.364    86.52
2007.13    0.366    86.92
2008.13    0.369    87.31
2009.13    0.371    87.70
2010.13    0.373    88.09
2011.13    0.375    88.47
2012.13    0.377    88.84
2013.13    0.379    89.21
2014.13    0.381    89.58
2015.13    0.382    89.95
2016.13    0.384    90.31
2017.13    0.385    90.67
2018.13    0.387    91.03
2019.13    0.388    91.38
2020.13    0.389    91.74
2021.13    0.390    92.09
2022.13    0.391    92.43
2023.13    0.392    92.78
2024.13    0.393    93.13
2025.13    0.394    93.47
2026.13    0.395    93.81
2027.13    0.395    94.15
2028.13    0.396    94.49
2029.13    0.396    94.83
2030.13    0.397    95.17
2031.13    0.397    95.51
2032.13    0.397    95.84
2033.13    0.398    96.18
2034.13    0.398    96.52
2035.13    0.398    96.85
2036.13    0.398    97.19
2037.13    0.398    97.52
2038.13    0.398    97.86
2039.13    0.398    98.19
2040.13    0.398    98.53
2041.13    0.398    98.87
2042.13    0.398    99.20
2043.13    0.397    99.54
2044.13    0.397    99.88
2045.13    0.397   100.21
2046.13    0.396   100.55
2047.13    0.396   100.89
2048.13    0.395   101.23
2049.13    0.395   101.57
2050.13    0.394   101.91
2051.13    0.393   102.26
2052.13    0.393   102.60
2053.13    0.392   102.95
2054.13    0.391   103.29
2055.13    0.390   103.64
2056.13    0.389   103.99
2057.13    0.389   104.34
2058.13    0.388   104.70
2059.13    0.387   105.05
2060.13    0.386   105.41
2061.13    0.385   105.77
2062.13    0.383   106.13
2063.13    0.382   106.49
2064.13    0.381   106.85
2065.13    0.380   107.22
2066.13    0.379   107.59
2067.13    0.377   107.96
2068.13    0.376   108.34
2069.13    0.375   108.71
2070.13    0.373   109.10
2071.13    0.372   109.48
2072.13    0.370   109.86
2073.13    0.369   110.25
2074.13    0.367   110.65
2075.13    0.366   111.04
2076.13    0.364   111.44
2077.13    0.363   111.84
2078.13    0.361   112.25
2079.13    0.359   112.66
2080.13    0.358   113.07
2081.13    0.356   113.49
2082.13    0.354   113.91
2083.13    0.352   114.34
2084.13    0.351   114.77
2085.13    0.349   115.20
2086.13    0.347   115.64
2087.13    0.345   116.09
2088.13    0.343   116.54
2089.13    0.341   116.99
2090.13    0.339   117.45
2091.13    0.337   117.92
2092.13    0.335   118.39
2093.13    0.333   118.86
2094.13    0.331   119.35
2095.13    0.329   119.83
2096.13    0.327   120.33
2097.13    0.325   120.83
2098.13    0.323   121.34
2099.13    0.320   121.85
2100.13    0.318   122.38
2101.13    0.316   122.90
2102.13    0.314   123.44
2103.13    0.311   123.99
2104.13    0.309   124.54
2105.13    0.307   125.10
2106.13    0.305   125.67
2107.13    0.302   126.24
2108.13    0.300   126.83
2109.13    0.298   127.43
2110.13    0.295   128.03
2111.13    0.293   128.65
2112.13    0.290   129.27
2113.13    0.288   129.91
2114.13    0.286   130.56
2115.13    0.283   131.21
2116.13    0.281   131.88
2117.13    0.278   132.56
2118.13    0.276   133.26
2119.13    0.273   133.96
2120.13    0.271   134.68
2121.13    0.268   135.42
2122.13    0.266   136.16
2123.13    0.263   136.92
2124.13    0.261   137.70
2125.13    0.258   138.49
2126.13    0.256   139.29
2127.13    0.253   140.12
2128.13    0.251   140.95
2129.13    0.248   141.81
2130.13    0.245   142.68
2131.13    0.243   143.58
2132.13    0.240   144.49
2133.13    0.238   145.42

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 15:41:51