Double Star Calculator - Orbit

Orbital Elements for R155

WDS:	R155	WDS ID/Discoverer
P:	142.927	Orbital period (years)
a:	1.42551	Semi-major axis (arcseconds)
i:	40.323	Inclination (degrees)
Ω:	108.08	Longitude of ascending node (degrees)
T:	1948.710	Epoch of periastron passage (year)
e:	0.93998	Eccentricity
ω:	122.424	Longitude of periastron (degrees)
Start-Year:	1953.5365	Year
End-Year:	2096.4635	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for R155
Position:	104646.20-492512.8	Epoch-2000 right ascension and declination
WDS-ID:	10468-4925	WDS designation
Discoverer Code:	R155	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	93497	HD catalog number
Hipparcos number:	52727	Hipparcos catalog number
V1:	2.82	Magnitude of the primary
V2:	5.65	Magnitude of the secondary
Equinox:		Equinox
Date:	2014	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Izm2019	Reference

Double Star Orbit for R155

WDS 6th Orbit including measures of R155

-- 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 R155

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.321    59.44
--------------------------
1953.54    0.541    14.12
1954.54    0.614    18.13
1955.54    0.682    21.31
1956.54    0.747    23.92
1957.54    0.809    26.12
1958.54    0.867    28.02
1959.54    0.924    29.68
1960.54    0.978    31.15
1961.54    1.030    32.48
1962.54    1.080    33.67
1963.54    1.128    34.77
1964.54    1.174    35.77
1965.54    1.219    36.70
1966.54    1.262    37.57
1967.54    1.304    38.38
1968.54    1.345    39.14
1969.54    1.384    39.85
1970.54    1.423    40.53
1971.54    1.460    41.17
1972.54    1.496    41.78
1973.54    1.530    42.36
1974.54    1.564    42.92
1975.54    1.597    43.45
1976.54    1.629    43.96
1977.54    1.660    44.45
1978.54    1.690    44.93
1979.54    1.719    45.39
1980.54    1.747    45.83
1981.54    1.775    46.26
1982.54    1.801    46.68
1983.54    1.827    47.08
1984.54    1.852    47.47
1985.54    1.876    47.86
1986.54    1.900    48.23
1987.54    1.923    48.60
1988.54    1.945    48.95
1989.54    1.966    49.30
1990.54    1.987    49.64
1991.54    2.007    49.97
1992.54    2.026    50.30
1993.54    2.045    50.62
1994.54    2.062    50.94
1995.54    2.080    51.25
1996.54    2.096    51.56
1997.54    2.113    51.86
1998.54    2.128    52.15
1999.54    2.143    52.44
2000.54    2.157    52.73
2001.54    2.171    53.02
2002.54    2.183    53.30
2003.54    2.196    53.58
2004.54    2.208    53.85
2005.54    2.219    54.12
2006.54    2.229    54.39
2007.54    2.239    54.66
2008.54    2.249    54.92
2009.54    2.258    55.18
2010.54    2.266    55.44
2011.54    2.274    55.70
2012.54    2.281    55.96
2013.54    2.287    56.21
2014.54    2.293    56.47
2015.54    2.299    56.72
2016.54    2.304    56.97
2017.54    2.308    57.22
2018.54    2.312    57.47
2019.54    2.315    57.72
2020.54    2.317    57.97
2021.54    2.319    58.22
2022.54    2.321    58.46
2023.54    2.322    58.71
2024.54    2.322    58.96
2025.54    2.322    59.21
2026.54    2.321    59.45
2027.54    2.319    59.70
2028.54    2.317    59.95
2029.54    2.315    60.20
2030.54    2.311    60.45
2031.54    2.308    60.69
2032.54    2.303    60.95
2033.54    2.298    61.20
2034.54    2.293    61.45
2035.54    2.286    61.70
2036.54    2.280    61.96
2037.54    2.272    62.22
2038.54    2.264    62.48
2039.54    2.255    62.74
2040.54    2.246    63.00
2041.54    2.236    63.26
2042.54    2.225    63.53
2043.54    2.214    63.80
2044.54    2.202    64.07
2045.54    2.189    64.35
2046.54    2.176    64.63
2047.54    2.162    64.91
2048.54    2.147    65.20
2049.54    2.131    65.49
2050.54    2.115    65.79
2051.54    2.098    66.09
2052.54    2.080    66.39
2053.54    2.061    66.70
2054.54    2.042    67.02
2055.54    2.021    67.34
2056.54    2.000    67.67
2057.54    1.978    68.01
2058.54    1.955    68.35
2059.54    1.932    68.70
2060.54    1.907    69.07
2061.54    1.881    69.44
2062.54    1.854    69.82
2063.54    1.826    70.21
2064.54    1.797    70.62
2065.54    1.767    71.04
2066.54    1.736    71.47
2067.54    1.704    71.92
2068.54    1.670    72.39
2069.54    1.635    72.88
2070.54    1.599    73.39
2071.54    1.561    73.92
2072.54    1.521    74.48
2073.54    1.480    75.07
2074.54    1.437    75.70
2075.54    1.393    76.36
2076.54    1.346    77.07
2077.54    1.297    77.83
2078.54    1.246    78.66
2079.54    1.192    79.55
2080.54    1.136    80.54
2081.54    1.076    81.63
2082.54    1.013    82.85
2083.54    0.946    84.24
2084.54    0.874    85.85
2085.54    0.796    87.76
2086.54    0.712    90.11
2087.54    0.619    93.12
2088.54    0.515    97.28
2089.54    0.393   103.81
2090.54    0.244   117.42
2091.54    0.069   209.87
2092.54    0.188   326.34
2093.54    0.293   350.17
2094.54    0.385     1.91
2095.54    0.469     9.26

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 16:30:31