Double Star Calculator - Orbit

Orbital Elements for WRH37AB

WDS:	WRH37AB	WDS ID/Discoverer
P:	118.000	Orbital period (years)
a:	0.3038	Semi-major axis (arcseconds)
i:	107.4	Inclination (degrees)
Ω:	4.8	Longitude of ascending node (degrees)
T:	2010.880	Epoch of periastron passage (year)
e:	0.34	Eccentricity
ω:	146.0	Longitude of periastron (degrees)
Start-Year:	1966.0	Year
End-Year:	2084.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WRH37AB
Position:	230155.26+421933.5	Epoch-2000 right ascension and declination
WDS-ID:	23019+4220	WDS designation
Discoverer Code:	WRH37AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	217675	HD catalog number
Hipparcos number:	113726	Hipparcos catalog number
V1:	3.73	Magnitude of the primary
V2:	6.03	Magnitude of the secondary
Equinox:		Equinox
Date:	2020	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:	Mit2021	Reference

Double Star Orbit for WRH37AB

WDS 6th Orbit including measures of WRH37AB

-- 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 WRH37AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.175   164.62
--------------------------
1966.00    0.385     8.07
1967.00    0.384     7.53
1968.00    0.383     7.00
1969.00    0.382     6.45
1970.00    0.380     5.91
1971.00    0.377     5.35
1972.00    0.374     4.79
1973.00    0.371     4.22
1974.00    0.366     3.64
1975.00    0.362     3.04
1976.00    0.357     2.43
1977.00    0.351     1.80
1978.00    0.345     1.14
1979.00    0.338     0.46
1980.00    0.330   359.75
1981.00    0.322   359.01
1982.00    0.313   358.22
1983.00    0.304   357.39
1984.00    0.294   356.50
1985.00    0.284   355.55
1986.00    0.272   354.53
1987.00    0.261   353.41
1988.00    0.248   352.19
1989.00    0.235   350.83
1990.00    0.222   349.32
1991.00    0.208   347.60
1992.00    0.193   345.62
1993.00    0.178   343.32
1994.00    0.163   340.59
1995.00    0.147   337.29
1996.00    0.132   333.21
1997.00    0.116   328.03
1998.00    0.102   321.31
1999.00    0.088   312.44
2000.00    0.077   300.70
2001.00    0.070   285.78
2002.00    0.067   268.66
2003.00    0.071   251.82
2004.00    0.079   237.50
2005.00    0.090   226.34
2006.00    0.104   217.87
2007.00    0.118   211.39
2008.00    0.132   206.30
2009.00    0.146   202.20
2010.00    0.159   198.79
2011.00    0.171   195.88
2012.00    0.182   193.33
2013.00    0.191   191.05
2014.00    0.198   188.96
2015.00    0.205   187.01
2016.00    0.209   185.16
2017.00    0.212   183.37
2018.00    0.213   181.62
2019.00    0.213   179.87
2020.00    0.211   178.11
2021.00    0.208   176.31
2022.00    0.204   174.45
2023.00    0.199   172.50
2024.00    0.193   170.45
2025.00    0.187   168.25
2026.00    0.179   165.88
2027.00    0.171   163.31
2028.00    0.163   160.48
2029.00    0.155   157.34
2030.00    0.146   153.84
2031.00    0.138   149.92
2032.00    0.130   145.49
2033.00    0.122   140.49
2034.00    0.115   134.85
2035.00    0.109   128.53
2036.00    0.104   121.54
2037.00    0.101   113.98
2038.00    0.099   106.00
2039.00    0.099    97.87
2040.00    0.100    89.87
2041.00    0.104    82.25
2042.00    0.109    75.21
2043.00    0.115    68.83
2044.00    0.122    63.16
2045.00    0.130    58.14
2046.00    0.138    53.73
2047.00    0.148    49.86
2048.00    0.157    46.44
2049.00    0.167    43.41
2050.00    0.177    40.72
2051.00    0.187    38.32
2052.00    0.197    36.16
2053.00    0.207    34.21
2054.00    0.216    32.44
2055.00    0.226    30.82
2056.00    0.236    29.33
2057.00    0.245    27.96
2058.00    0.254    26.70
2059.00    0.264    25.52
2060.00    0.272    24.41
2061.00    0.281    23.38
2062.00    0.289    22.40
2063.00    0.297    21.48
2064.00    0.305    20.61
2065.00    0.313    19.78
2066.00    0.320    18.99
2067.00    0.327    18.23
2068.00    0.333    17.50
2069.00    0.339    16.80
2070.00    0.345    16.12
2071.00    0.350    15.47
2072.00    0.355    14.83
2073.00    0.360    14.21
2074.00    0.364    13.61
2075.00    0.368    13.02
2076.00    0.372    12.44
2077.00    0.375    11.88
2078.00    0.378    11.32
2079.00    0.380    10.77
2080.00    0.382    10.22
2081.00    0.383     9.68
2082.00    0.384     9.14
2083.00    0.385     8.61

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 18:46:29