Double Star Calculator - Orbit

Orbital Elements for B1937
WDS: B1937 WDS ID/Discoverer
P: 111.550 Orbital period (years)
a: 0.213 Semi-major axis (arcseconds)
i: 180.0 Inclination (degrees)
Ω: 123.4 Longitude of ascending node (degrees)
T: 1908.670 Epoch of periastron passage (year)
e: 0.16 Eccentricity
ω: 0.0 Longitude of periastron (degrees)
Start-Year: 1969.225 Year
End-Year: 2080.775 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for B1937
Position: 043014.81-174725.0 Epoch-2000 right ascension and declination
WDS-ID: 04302-1747 WDS designation
Discoverer Code: B1937 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 28637 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.5 Magnitude of the primary
V2: 9.7 Magnitude of the secondary
Equinox: Equinox
Date: 2018 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: Tok2019c Reference

Double Star Orbit for B1937



WDS 6th Orbit including measures of B1937

-- 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 B1937
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.182    95.36
--------------------------
1969.22    0.246   292.06
1970.22    0.246   289.67
1971.22    0.245   287.27
1972.22    0.245   284.86
1973.22    0.244   282.44
1974.22    0.243   280.00
1975.22    0.242   277.55
1976.22    0.242   275.09
1977.22    0.241   272.60
1978.22    0.240   270.09
1979.22    0.238   267.56
1980.22    0.237   265.01
1981.22    0.236   262.43
1982.22    0.235   259.82
1983.22    0.233   257.18
1984.22    0.232   254.51
1985.22    0.230   251.81
1986.22    0.229   249.07
1987.22    0.227   246.29
1988.22    0.226   243.48
1989.22    0.224   240.61
1990.22    0.222   237.71
1991.22    0.220   234.76
1992.22    0.219   231.76
1993.22    0.217   228.71
1994.22    0.215   225.60
1995.22    0.213   222.44
1996.22    0.211   219.22
1997.22    0.209   215.95
1998.22    0.207   212.61
1999.22    0.205   209.21
2000.22    0.203   205.74
2001.22    0.201   202.21
2002.22    0.199   198.60
2003.22    0.198   194.93
2004.22    0.196   191.20
2005.22    0.194   187.39
2006.22    0.192   183.51
2007.22    0.191   179.57
2008.22    0.189   175.55
2009.22    0.188   171.47
2010.22    0.186   167.33
2011.22    0.185   163.13
2012.22    0.184   158.87
2013.22    0.183   154.56
2014.22    0.182   150.20
2015.22    0.181   145.79
2016.22    0.180   141.36
2017.22    0.180   136.89
2018.22    0.179   132.40
2019.22    0.179   127.89
2020.22    0.179   123.38
2021.22    0.179   118.86
2022.22    0.179   114.36
2023.22    0.180   109.87
2024.22    0.180   105.40
2025.22    0.181   100.96
2026.22    0.182    96.56
2027.22    0.183    92.20
2028.22    0.184    87.89
2029.22    0.185    83.63
2030.22    0.186    79.43
2031.22    0.188    75.29
2032.22    0.189    71.21
2033.22    0.191    67.19
2034.22    0.192    63.25
2035.22    0.194    59.37
2036.22    0.196    55.57
2037.22    0.198    51.83
2038.22    0.199    48.16
2039.22    0.201    44.56
2040.22    0.203    41.03
2041.22    0.205    37.56
2042.22    0.207    34.16
2043.22    0.209    30.82
2044.22    0.211    27.54
2045.22    0.213    24.33
2046.22    0.215    21.17
2047.22    0.217    18.06
2048.22    0.219    15.01
2049.22    0.220    12.01
2050.22    0.222     9.06
2051.22    0.224     6.16
2052.22    0.226     3.30
2053.22    0.227     0.48
2054.22    0.229   357.70
2055.22    0.230   354.96
2056.22    0.232   352.26
2057.22    0.233   349.59
2058.22    0.235   346.95
2059.22    0.236   344.34
2060.22    0.237   341.76
2061.22    0.238   339.21
2062.22    0.240   336.68
2063.22    0.241   334.18
2064.22    0.242   331.69
2065.22    0.242   329.22
2066.22    0.243   326.77
2067.22    0.244   324.34
2068.22    0.245   321.92
2069.22    0.245   319.51
2070.22    0.246   317.11
2071.22    0.246   314.72
2072.22    0.247   312.34
2073.22    0.247   309.96
2074.22    0.247   307.59
2075.22    0.247   305.22
2076.22    0.247   302.86
2077.22    0.247   300.49
2078.22    0.247   298.12
2079.22    0.247   295.74
2080.22    0.246   293.37






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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 15:25:19



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