Double Star Calculator - Orbit

Orbital Elements for RST310

WDS:	RST310	WDS ID/Discoverer
P:	137.600	Orbital period (years)
a:	0.181	Semi-major axis (arcseconds)
i:	150.7	Inclination (degrees)
Ω:	81.8	Longitude of ascending node (degrees)
T:	1998.640	Epoch of periastron passage (year)
e:	0.264	Eccentricity
ω:	103.5	Longitude of periastron (degrees)
Start-Year:	1956.2	Year
End-Year:	2093.8	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST310
Position:	081250.64-635839.7	Epoch-2000 right ascension and declination
WDS-ID:	08128-6359	WDS designation
Discoverer Code:	RST310	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	69632	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.0	Magnitude of the primary
V2:	9.0	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2021f	Reference

Double Star Orbit for RST310

WDS 6th Orbit including measures of RST310

-- 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 RST310

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.175   237.96
--------------------------
1956.20    0.200   110.41
1957.20    0.200   108.60
1958.20    0.199   106.79
1959.20    0.198   104.95
1960.20    0.197   103.10
1961.20    0.196   101.22
1962.20    0.194    99.32
1963.20    0.193    97.40
1964.20    0.191    95.45
1965.20    0.190    93.47
1966.20    0.188    91.45
1967.20    0.187    89.40
1968.20    0.185    87.30
1969.20    0.183    85.17
1970.20    0.181    82.98
1971.20    0.178    80.75
1972.20    0.176    78.45
1973.20    0.174    76.09
1974.20    0.171    73.67
1975.20    0.169    71.17
1976.20    0.166    68.59
1977.20    0.163    65.92
1978.20    0.160    63.16
1979.20    0.157    60.30
1980.20    0.154    57.32
1981.20    0.151    54.22
1982.20    0.148    51.00
1983.20    0.145    47.63
1984.20    0.142    44.12
1985.20    0.139    40.45
1986.20    0.136    36.61
1987.20    0.133    32.60
1988.20    0.130    28.42
1989.20    0.127    24.06
1990.20    0.125    19.52
1991.20    0.123    14.81
1992.20    0.121     9.95
1993.20    0.119     4.94
1994.20    0.118   359.81
1995.20    0.117   354.60
1996.20    0.117   349.32
1997.20    0.117   344.02
1998.20    0.117   338.72
1999.20    0.118   333.48
2000.20    0.119   328.31
2001.20    0.120   323.24
2002.20    0.122   318.31
2003.20    0.124   313.51
2004.20    0.126   308.88
2005.20    0.128   304.40
2006.20    0.131   300.09
2007.20    0.133   295.94
2008.20    0.136   291.96
2009.20    0.138   288.12
2010.20    0.141   284.43
2011.20    0.144   280.88
2012.20    0.146   277.45
2013.20    0.149   274.15
2014.20    0.151   270.95
2015.20    0.154   267.86
2016.20    0.156   264.86
2017.20    0.158   261.95
2018.20    0.161   259.12
2019.20    0.163   256.36
2020.20    0.165   253.67
2021.20    0.167   251.04
2022.20    0.168   248.47
2023.20    0.170   245.95
2024.20    0.172   243.48
2025.20    0.173   241.05
2026.20    0.174   238.67
2027.20    0.176   236.32
2028.20    0.177   234.00
2029.20    0.178   231.72
2030.20    0.179   229.46
2031.20    0.180   227.23
2032.20    0.181   225.03
2033.20    0.182   222.85
2034.20    0.183   220.70
2035.20    0.184   218.56
2036.20    0.185   216.44
2037.20    0.186   214.34
2038.20    0.186   212.26
2039.20    0.187   210.19
2040.20    0.188   208.14
2041.20    0.188   206.10
2042.20    0.189   204.08
2043.20    0.190   202.07
2044.20    0.190   200.07
2045.20    0.191   198.08
2046.20    0.191   196.10
2047.20    0.192   194.14
2048.20    0.192   192.18
2049.20    0.193   190.24
2050.20    0.193   188.31
2051.20    0.194   186.38
2052.20    0.194   184.47
2053.20    0.195   182.57
2054.20    0.195   180.67
2055.20    0.196   178.79
2056.20    0.196   176.91
2057.20    0.197   175.04
2058.20    0.197   173.19
2059.20    0.198   171.34
2060.20    0.198   169.50
2061.20    0.199   167.66
2062.20    0.199   165.84
2063.20    0.199   164.02
2064.20    0.200   162.21
2065.20    0.200   160.41
2066.20    0.201   158.62
2067.20    0.201   156.84
2068.20    0.202   155.06
2069.20    0.202   153.28
2070.20    0.202   151.52
2071.20    0.203   149.76
2072.20    0.203   148.00
2073.20    0.203   146.26
2074.20    0.203   144.51
2075.20    0.204   142.77
2076.20    0.204   141.04
2077.20    0.204   139.31
2078.20    0.204   137.58
2079.20    0.204   135.85
2080.20    0.204   134.12
2081.20    0.205   132.40
2082.20    0.204   130.68
2083.20    0.204   128.95
2084.20    0.204   127.23
2085.20    0.204   125.50
2086.20    0.204   123.77
2087.20    0.204   122.03
2088.20    0.203   120.29
2089.20    0.203   118.55
2090.20    0.203   116.80
2091.20    0.202   115.03
2092.20    0.201   113.26
2093.20    0.201   111.48

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 16:05:27