Double Star Calculator - Orbit

Orbital Elements for A2373

WDS:	A2373	WDS ID/Discoverer
P:	100.260	Orbital period (years)
a:	0.172	Semi-major axis (arcseconds)
i:	135.5	Inclination (degrees)
Ω:	130.3	Longitude of ascending node (degrees)
T:	1980.770	Epoch of periastron passage (year)
e:	0.816	Eccentricity
ω:	101.6	Longitude of periastron (degrees)
Start-Year:	1974.87	Year
End-Year:	2075.13	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2373
Position:	105202.94+160544.0	Epoch-2000 right ascension and declination
WDS-ID:	10520+1606	WDS designation
Discoverer Code:	A2373	Discover designation and components
ADS number:	7952	Aitken Double Star catalog
HD number:	94120	HD catalog number
Hipparcos number:	53124	Hipparcos catalog number
V1:	8.8	Magnitude of the primary
V2:	8.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1993	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:	USN2007a	Reference

Double Star Orbit for A2373

WDS 6th Orbit including measures of A2373

-- 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 A2373

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.224   208.03
--------------------------
1974.87    0.104   147.35
1975.87    0.093   142.80
1976.87    0.081   136.96
1977.87    0.066   128.81
1978.87    0.050   115.67
1979.87    0.031    87.40
1980.87    0.024    16.17
1981.87    0.039   325.66
1982.87    0.054   304.93
1983.87    0.067   292.85
1984.87    0.077   284.35
1985.87    0.086   277.78
1986.87    0.094   272.40
1987.87    0.102   267.84
1988.87    0.109   263.89
1989.87    0.115   260.39
1990.87    0.121   257.25
1991.87    0.127   254.40
1992.87    0.132   251.79
1993.87    0.137   249.38
1994.87    0.142   247.13
1995.87    0.147   245.04
1996.87    0.151   243.07
1997.87    0.156   241.21
1998.87    0.160   239.45
1999.87    0.164   237.78
2000.87    0.168   236.18
2001.87    0.171   234.66
2002.87    0.175   233.19
2003.87    0.178   231.79
2004.87    0.181   230.43
2005.87    0.184   229.12
2006.87    0.187   227.85
2007.87    0.190   226.62
2008.87    0.193   225.43
2009.87    0.196   224.27
2010.87    0.198   223.14
2011.87    0.201   222.04
2012.87    0.203   220.97
2013.87    0.205   219.91
2014.87    0.207   218.88
2015.87    0.209   217.87
2016.87    0.211   216.88
2017.87    0.213   215.90
2018.87    0.215   214.95
2019.87    0.216   214.00
2020.87    0.218   213.07
2021.87    0.219   212.15
2022.87    0.220   211.24
2023.87    0.221   210.34
2024.87    0.223   209.46
2025.87    0.224   208.58
2026.87    0.224   207.70
2027.87    0.225   206.84
2028.87    0.226   205.98
2029.87    0.227   205.12
2030.87    0.227   204.27
2031.87    0.227   203.42
2032.87    0.228   202.58
2033.87    0.228   201.73
2034.87    0.228   200.89
2035.87    0.228   200.05
2036.87    0.228   199.21
2037.87    0.228   198.37
2038.87    0.228   197.52
2039.87    0.227   196.67
2040.87    0.227   195.82
2041.87    0.226   194.97
2042.87    0.225   194.11
2043.87    0.224   193.24
2044.87    0.223   192.37
2045.87    0.222   191.48
2046.87    0.221   190.59
2047.87    0.220   189.69
2048.87    0.218   188.78
2049.87    0.217   187.85
2050.87    0.215   186.91
2051.87    0.213   185.95
2052.87    0.211   184.98
2053.87    0.209   183.98
2054.87    0.206   182.96
2055.87    0.204   181.92
2056.87    0.201   180.86
2057.87    0.198   179.76
2058.87    0.195   178.63
2059.87    0.192   177.46
2060.87    0.189   176.25
2061.87    0.185   175.00
2062.87    0.181   173.69
2063.87    0.177   172.32
2064.87    0.172   170.89
2065.87    0.168   169.37
2066.87    0.163   167.77
2067.87    0.157   166.06
2068.87    0.152   164.23
2069.87    0.146   162.25
2070.87    0.139   160.08
2071.87    0.132   157.69
2072.87    0.124   155.01
2073.87    0.115   151.96
2074.87    0.106   148.39

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 16:31:11