Double Star Calculator - Orbit

Orbital Elements for A1530

WDS:	A1530	WDS ID/Discoverer
P:	127.800	Orbital period (years)
a:	0.4924	Semi-major axis (arcseconds)
i:	83.14	Inclination (degrees)
Ω:	79.31	Longitude of ascending node (degrees)
T:	2020.700	Epoch of periastron passage (year)
e:	0.739	Eccentricity
ω:	78.72	Longitude of periastron (degrees)
Start-Year:	1961.1	Year
End-Year:	2088.9	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1530
Position:	030031.19+393421.3	Epoch-2000 right ascension and declination
WDS-ID:	03005+3934	WDS designation
Discoverer Code:	A1530	Discover designation and components
ADS number:	2273	Aitken Double Star catalog
HD number:	18567	HD catalog number
Hipparcos number:	14020	Hipparcos catalog number
V1:	9.29	Magnitude of the primary
V2:	10.11	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	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:	Hrt2011a	Reference

Double Star Orbit for A1530

WDS 6th Orbit including measures of A1530

-- 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 A1530

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.247   258.85
--------------------------
1961.10    0.162   297.69
1962.10    0.155   299.87
1963.10    0.148   302.27
1964.10    0.141   304.91
1965.10    0.134   307.82
1966.10    0.128   311.03
1967.10    0.122   314.56
1968.10    0.116   318.44
1969.10    0.111   322.69
1970.10    0.107   327.32
1971.10    0.103   332.32
1972.10    0.100   337.64
1973.10    0.098   343.24
1974.10    0.097   349.02
1975.10    0.097   354.88
1976.10    0.098     0.71
1977.10    0.099     6.39
1978.10    0.102    11.83
1979.10    0.105    16.96
1980.10    0.109    21.74
1981.10    0.114    26.15
1982.10    0.119    30.18
1983.10    0.125    33.86
1984.10    0.131    37.20
1985.10    0.138    40.24
1986.10    0.145    43.00
1987.10    0.151    45.51
1988.10    0.158    47.80
1989.10    0.166    49.89
1990.10    0.173    51.81
1991.10    0.180    53.58
1992.10    0.187    55.20
1993.10    0.195    56.71
1994.10    0.202    58.11
1995.10    0.209    59.42
1996.10    0.215    60.64
1997.10    0.222    61.79
1998.10    0.229    62.87
1999.10    0.235    63.90
2000.10    0.241    64.87
2001.10    0.246    65.79
2002.10    0.251    66.68
2003.10    0.256    67.53
2004.10    0.260    68.36
2005.10    0.264    69.16
2006.10    0.267    69.94
2007.10    0.269    70.70
2008.10    0.270    71.46
2009.10    0.270    72.21
2010.10    0.269    72.97
2011.10    0.266    73.73
2012.10    0.261    74.52
2013.10    0.254    75.35
2014.10    0.245    76.23
2015.10    0.231    77.20
2016.10    0.213    78.31
2017.10    0.189    79.67
2018.10    0.157    81.51
2019.10    0.115    84.53
2020.10    0.063    92.08
2021.10    0.015   167.67
2022.10    0.062   245.22
2023.10    0.116   252.76
2024.10    0.162   255.65
2025.10    0.202   257.31
2026.10    0.235   258.47
2027.10    0.263   259.36
2028.10    0.287   260.09
2029.10    0.307   260.71
2030.10    0.325   261.26
2031.10    0.340   261.76
2032.10    0.353   262.21
2033.10    0.364   262.64
2034.10    0.374   263.04
2035.10    0.382   263.43
2036.10    0.389   263.80
2037.10    0.395   264.16
2038.10    0.400   264.50
2039.10    0.404   264.84
2040.10    0.408   265.18
2041.10    0.410   265.50
2042.10    0.412   265.83
2043.10    0.413   266.15
2044.10    0.414   266.47
2045.10    0.414   266.79
2046.10    0.413   267.12
2047.10    0.412   267.44
2048.10    0.411   267.76
2049.10    0.409   268.09
2050.10    0.407   268.42
2051.10    0.404   268.75
2052.10    0.401   269.09
2053.10    0.398   269.44
2054.10    0.394   269.79
2055.10    0.390   270.15
2056.10    0.386   270.51
2057.10    0.382   270.88
2058.10    0.377   271.26
2059.10    0.372   271.66
2060.10    0.367   272.06
2061.10    0.361   272.47
2062.10    0.356   272.90
2063.10    0.350   273.34
2064.10    0.344   273.80
2065.10    0.338   274.27
2066.10    0.332   274.76
2067.10    0.325   275.27
2068.10    0.318   275.80
2069.10    0.312   276.36
2070.10    0.305   276.93
2071.10    0.298   277.54
2072.10    0.291   278.18
2073.10    0.283   278.84
2074.10    0.276   279.55
2075.10    0.269   280.29
2076.10    0.261   281.07
2077.10    0.253   281.90
2078.10    0.246   282.78
2079.10    0.238   283.72
2080.10    0.230   284.73
2081.10    0.223   285.80
2082.10    0.215   286.95
2083.10    0.207   288.18
2084.10    0.199   289.52
2085.10    0.191   290.96
2086.10    0.184   292.53
2087.10    0.176   294.23
2088.10    0.168   296.08

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 15:06:34