Double Star Calculator - Orbit

Orbital Elements for RST2917

WDS:	RST2917	WDS ID/Discoverer
P:	140.000	Orbital period (years)
a:	0.317	Semi-major axis (arcseconds)
i:	135.4	Inclination (degrees)
Ω:	123.5	Longitude of ascending node (degrees)
T:	2045.000	Epoch of periastron passage (year)
e:	0.65	Eccentricity
ω:	103.2	Longitude of periastron (degrees)
Start-Year:	1955.0	Year
End-Year:	2095.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST2917
Position:	144106.74-223706.7	Epoch-2000 right ascension and declination
WDS-ID:	14411-2237	WDS designation
Discoverer Code:	RST2917	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	129065	HD catalog number
Hipparcos number:	71792	Hipparcos catalog number
V1:	7.58	Magnitude of the primary
V2:	9.02	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1997	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:	USN2002	Reference

Double Star Orbit for RST2917

WDS 6th Orbit including measures of RST2917

-- 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 RST2917

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.286   140.43
--------------------------
1955.00    0.351   215.96
1956.00    0.353   214.83
1957.00    0.355   213.71
1958.00    0.357   212.60
1959.00    0.359   211.51
1960.00    0.360   210.43
1961.00    0.362   209.35
1962.00    0.364   208.29
1963.00    0.366   207.24
1964.00    0.367   206.20
1965.00    0.369   205.17
1966.00    0.370   204.15
1967.00    0.372   203.13
1968.00    0.373   202.13
1969.00    0.375   201.13
1970.00    0.376   200.13
1971.00    0.377   199.15
1972.00    0.379   198.17
1973.00    0.380   197.20
1974.00    0.381   196.23
1975.00    0.382   195.27
1976.00    0.383   194.31
1977.00    0.384   193.36
1978.00    0.384   192.41
1979.00    0.385   191.47
1980.00    0.386   190.52
1981.00    0.386   189.59
1982.00    0.387   188.65
1983.00    0.387   187.72
1984.00    0.388   186.79
1985.00    0.388   185.86
1986.00    0.388   184.93
1987.00    0.389   184.01
1988.00    0.389   183.08
1989.00    0.389   182.15
1990.00    0.388   181.23
1991.00    0.388   180.30
1992.00    0.388   179.37
1993.00    0.388   178.44
1994.00    0.387   177.51
1995.00    0.386   176.58
1996.00    0.386   175.64
1997.00    0.385   174.70
1998.00    0.384   173.75
1999.00    0.383   172.80
2000.00    0.382   171.84
2001.00    0.381   170.88
2002.00    0.379   169.91
2003.00    0.378   168.94
2004.00    0.376   167.95
2005.00    0.374   166.96
2006.00    0.372   165.96
2007.00    0.370   164.94
2008.00    0.368   163.91
2009.00    0.365   162.87
2010.00    0.363   161.82
2011.00    0.360   160.75
2012.00    0.357   159.66
2013.00    0.354   158.55
2014.00    0.351   157.43
2015.00    0.347   156.28
2016.00    0.343   155.10
2017.00    0.339   153.90
2018.00    0.335   152.67
2019.00    0.330   151.41
2020.00    0.325   150.11
2021.00    0.320   148.77
2022.00    0.315   147.38
2023.00    0.309   145.95
2024.00    0.303   144.45
2025.00    0.297   142.90
2026.00    0.290   141.27
2027.00    0.283   139.57
2028.00    0.275   137.77
2029.00    0.267   135.86
2030.00    0.258   133.82
2031.00    0.248   131.64
2032.00    0.238   129.28
2033.00    0.228   126.71
2034.00    0.216   123.88
2035.00    0.204   120.72
2036.00    0.191   117.14
2037.00    0.177   113.03
2038.00    0.163   108.19
2039.00    0.147   102.36
2040.00    0.131    95.12
2041.00    0.115    85.83
2042.00    0.100    73.59
2043.00    0.087    57.39
2044.00    0.080    37.14
2045.00    0.081    15.27
2046.00    0.089   355.61
2047.00    0.101   340.00
2048.00    0.116   328.03
2049.00    0.130   318.72
2050.00    0.144   311.23
2051.00    0.156   305.00
2052.00    0.168   299.67
2053.00    0.178   295.01
2054.00    0.188   290.84
2055.00    0.197   287.07
2056.00    0.205   283.62
2057.00    0.213   280.42
2058.00    0.220   277.43
2059.00    0.226   274.62
2060.00    0.233   271.97
2061.00    0.238   269.45
2062.00    0.244   267.05
2063.00    0.249   264.75
2064.00    0.254   262.54
2065.00    0.259   260.42
2066.00    0.263   258.37
2067.00    0.268   256.39
2068.00    0.272   254.47
2069.00    0.276   252.61
2070.00    0.280   250.80
2071.00    0.284   249.04
2072.00    0.287   247.32
2073.00    0.291   245.65
2074.00    0.294   244.02
2075.00    0.298   242.42
2076.00    0.301   240.86
2077.00    0.304   239.34
2078.00    0.307   237.84
2079.00    0.310   236.37
2080.00    0.313   234.94
2081.00    0.316   233.52
2082.00    0.319   232.14
2083.00    0.322   230.78
2084.00    0.324   229.44
2085.00    0.327   228.12
2086.00    0.330   226.82
2087.00    0.332   225.55
2088.00    0.335   224.29
2089.00    0.337   223.05
2090.00    0.339   221.83
2091.00    0.342   220.62
2092.00    0.344   219.43
2093.00    0.346   218.26
2094.00    0.348   217.10

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 17:07:50