Double Star Calculator - Orbit

Orbital Elements for FIN181

WDS:	FIN181	WDS ID/Discoverer
P:	140.300	Orbital period (years)
a:	0.326	Semi-major axis (arcseconds)
i:	132.8	Inclination (degrees)
Ω:	48.8	Longitude of ascending node (degrees)
T:	1951.180	Epoch of periastron passage (year)
e:	0.65	Eccentricity
ω:	103.2	Longitude of periastron (degrees)
Start-Year:	1954.85	Year
End-Year:	2095.15	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for FIN181
Position:	111702.82-553721.3	Epoch-2000 right ascension and declination
WDS-ID:	11170-5537	WDS designation
Discoverer Code:	FIN181	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	7013	HD catalog number
Hipparcos number:	5513	Hipparcos catalog number
V1:	7.61	Magnitude of the primary
V2:	9.45	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	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:	Tok2022g	Reference

Double Star Orbit for FIN181

WDS 6th Orbit including measures of FIN181

-- 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 FIN181

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.382   114.69
--------------------------
1954.85    0.128   246.15
1955.85    0.143   238.46
1956.85    0.156   232.15
1957.85    0.169   226.82
1958.85    0.180   222.17
1959.85    0.190   218.05
1960.85    0.199   214.32
1961.85    0.207   210.90
1962.85    0.215   207.74
1963.85    0.222   204.79
1964.85    0.228   202.01
1965.85    0.234   199.37
1966.85    0.240   196.87
1967.85    0.245   194.47
1968.85    0.250   192.18
1969.85    0.255   189.97
1970.85    0.259   187.83
1971.85    0.263   185.77
1972.85    0.267   183.77
1973.85    0.271   181.82
1974.85    0.275   179.93
1975.85    0.278   178.09
1976.85    0.282   176.30
1977.85    0.285   174.54
1978.85    0.288   172.83
1979.85    0.291   171.15
1980.85    0.294   169.51
1981.85    0.297   167.90
1982.85    0.300   166.32
1983.85    0.303   164.78
1984.85    0.306   163.26
1985.85    0.308   161.76
1986.85    0.311   160.29
1987.85    0.314   158.85
1988.85    0.316   157.43
1989.85    0.319   156.03
1990.85    0.321   154.65
1991.85    0.323   153.30
1992.85    0.326   151.96
1993.85    0.328   150.64
1994.85    0.330   149.34
1995.85    0.333   148.06
1996.85    0.335   146.80
1997.85    0.337   145.55
1998.85    0.339   144.32
1999.85    0.341   143.10
2000.85    0.343   141.90
2001.85    0.345   140.71
2002.85    0.347   139.53
2003.85    0.349   138.37
2004.85    0.351   137.22
2005.85    0.353   136.08
2006.85    0.355   134.96
2007.85    0.356   133.85
2008.85    0.358   132.74
2009.85    0.360   131.65
2010.85    0.362   130.57
2011.85    0.363   129.50
2012.85    0.365   128.44
2013.85    0.366   127.38
2014.85    0.368   126.34
2015.85    0.369   125.30
2016.85    0.371   124.27
2017.85    0.372   123.25
2018.85    0.373   122.24
2019.85    0.375   121.23
2020.85    0.376   120.23
2021.85    0.377   119.24
2022.85    0.378   118.25
2023.85    0.379   117.27
2024.85    0.380   116.29
2025.85    0.381   115.32
2026.85    0.382   114.35
2027.85    0.383   113.39
2028.85    0.383   112.43
2029.85    0.384   111.47
2030.85    0.385   110.52
2031.85    0.385   109.57
2032.85    0.386   108.62
2033.85    0.386   107.68
2034.85    0.386   106.73
2035.85    0.386   105.79
2036.85    0.387   104.84
2037.85    0.387   103.90
2038.85    0.386   102.96
2039.85    0.386   102.02
2040.85    0.386   101.07
2041.85    0.386   100.13
2042.85    0.385    99.18
2043.85    0.385    98.23
2044.85    0.384    97.28
2045.85    0.383    96.32
2046.85    0.382    95.36
2047.85    0.381    94.39
2048.85    0.380    93.42
2049.85    0.379    92.45
2050.85    0.377    91.46
2051.85    0.376    90.47
2052.85    0.374    89.47
2053.85    0.372    88.46
2054.85    0.370    87.43
2055.85    0.368    86.40
2056.85    0.366    85.35
2057.85    0.363    84.29
2058.85    0.360    83.21
2059.85    0.357    82.12
2060.85    0.354    81.01
2061.85    0.351    79.87
2062.85    0.347    78.72
2063.85    0.343    77.53
2064.85    0.339    76.32
2065.85    0.334    75.08
2066.85    0.330    73.80
2067.85    0.325    72.49
2068.85    0.319    71.13
2069.85    0.313    69.72
2070.85    0.307    68.26
2071.85    0.301    66.74
2072.85    0.294    65.15
2073.85    0.286    63.47
2074.85    0.279    61.71
2075.85    0.270    59.84
2076.85    0.261    57.84
2077.85    0.251    55.70
2078.85    0.241    53.37
2079.85    0.230    50.83
2080.85    0.218    48.02
2081.85    0.205    44.86
2082.85    0.191    41.27
2083.85    0.176    37.10
2084.85    0.161    32.14
2085.85    0.144    26.06
2086.85    0.127    18.36
2087.85    0.110     8.24
2088.85    0.094   354.58
2089.85    0.083   336.29
2090.85    0.078   314.08
2091.85    0.082   291.82
2092.85    0.093   273.36
2093.85    0.108   259.37
2094.85    0.123   248.82

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 16:36:32