Double Star Calculator - Orbit

Orbital Elements for B912

WDS:	B912	WDS ID/Discoverer
P:	132.256	Orbital period (years)
a:	0.297	Semi-major axis (arcseconds)
i:	44.9	Inclination (degrees)
Ω:	226.8	Longitude of ascending node (degrees)
T:	1944.750	Epoch of periastron passage (year)
e:	0.113	Eccentricity
ω:	116.2	Longitude of periastron (degrees)
Start-Year:	1958.872	Year
End-Year:	2091.128	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B912
Position:	173047.97-372612.9	Epoch-2000 right ascension and declination
WDS-ID:	17308-3726	WDS designation
Discoverer Code:	B912	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	158409	HD catalog number
Hipparcos number:	85700	Hipparcos catalog number
V1:	7.48	Magnitude of the primary
V2:	7.96	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	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:	Msn2011c	Reference

Double Star Orbit for B912

WDS 6th Orbit including measures of B912

-- 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 B912

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.304   205.22
--------------------------
1958.87    0.267    35.06
1959.87    0.270    37.40
1960.87    0.273    39.70
1961.87    0.275    41.95
1962.87    0.277    44.16
1963.87    0.279    46.34
1964.87    0.280    48.51
1965.87    0.281    50.65
1966.87    0.282    52.78
1967.87    0.282    54.90
1968.87    0.282    57.02
1969.87    0.282    59.15
1970.87    0.281    61.28
1971.87    0.280    63.43
1972.87    0.279    65.59
1973.87    0.277    67.78
1974.87    0.276    69.99
1975.87    0.274    72.23
1976.87    0.272    74.50
1977.87    0.269    76.81
1978.87    0.267    79.16
1979.87    0.264    81.56
1980.87    0.262    84.00
1981.87    0.259    86.50
1982.87    0.256    89.04
1983.87    0.253    91.64
1984.87    0.251    94.30
1985.87    0.248    97.02
1986.87    0.246    99.79
1987.87    0.243   102.62
1988.87    0.241   105.50
1989.87    0.239   108.44
1990.87    0.237   111.43
1991.87    0.235   114.46
1992.87    0.234   117.54
1993.87    0.233   120.64
1994.87    0.232   123.78
1995.87    0.231   126.94
1996.87    0.231   130.11
1997.87    0.231   133.28
1998.87    0.231   136.45
1999.87    0.232   139.61
2000.87    0.233   142.75
2001.87    0.234   145.85
2002.87    0.235   148.92
2003.87    0.237   151.95
2004.87    0.239   154.93
2005.87    0.242   157.86
2006.87    0.244   160.72
2007.87    0.247   163.53
2008.87    0.250   166.28
2009.87    0.253   168.96
2010.87    0.256   171.57
2011.87    0.259   174.12
2012.87    0.262   176.61
2013.87    0.266   179.03
2014.87    0.269   181.39
2015.87    0.273   183.70
2016.87    0.276   185.94
2017.87    0.279   188.13
2018.87    0.283   190.27
2019.87    0.286   192.37
2020.87    0.289   194.41
2021.87    0.292   196.41
2022.87    0.295   198.38
2023.87    0.297   200.31
2024.87    0.300   202.20
2025.87    0.302   204.06
2026.87    0.304   205.90
2027.87    0.306   207.72
2028.87    0.308   209.51
2029.87    0.309   211.29
2030.87    0.310   213.05
2031.87    0.311   214.80
2032.87    0.312   216.54
2033.87    0.312   218.28
2034.87    0.312   220.02
2035.87    0.311   221.76
2036.87    0.311   223.51
2037.87    0.310   225.26
2038.87    0.308   227.03
2039.87    0.307   228.82
2040.87    0.305   230.62
2041.87    0.303   232.45
2042.87    0.300   234.32
2043.87    0.297   236.21
2044.87    0.294   238.15
2045.87    0.290   240.13
2046.87    0.286   242.17
2047.87    0.282   244.26
2048.87    0.278   246.42
2049.87    0.273   248.64
2050.87    0.268   250.95
2051.87    0.263   253.34
2052.87    0.258   255.83
2053.87    0.253   258.42
2054.87    0.247   261.13
2055.87    0.242   263.96
2056.87    0.236   266.93
2057.87    0.230   270.03
2058.87    0.225   273.29
2059.87    0.220   276.72
2060.87    0.215   280.30
2061.87    0.210   284.06
2062.87    0.205   287.99
2063.87    0.201   292.08
2064.87    0.197   296.34
2065.87    0.194   300.75
2066.87    0.192   305.28
2067.87    0.190   309.91
2068.87    0.189   314.62
2069.87    0.188   319.38
2070.87    0.189   324.13
2071.87    0.190   328.86
2072.87    0.191   333.53
2073.87    0.193   338.10
2074.87    0.196   342.56
2075.87    0.200   346.87
2076.87    0.203   351.04
2077.87    0.207   355.05
2078.87    0.212   358.89
2079.87    0.217     2.57
2080.87    0.221     6.09
2081.87    0.226     9.46
2082.87    0.231    12.69
2083.87    0.236    15.78
2084.87    0.241    18.74
2085.87    0.246    21.59
2086.87    0.250    24.34
2087.87    0.255    26.98
2088.87    0.259    29.55
2089.87    0.263    32.03
2090.87    0.266    34.45

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 17:39:29