Double Star Calculator - Orbit

Orbital Elements for SLR15

WDS:	SLR15	WDS ID/Discoverer
P:	1251.740	Orbital period (years)
a:	1.303	Semi-major axis (arcseconds)
i:	122.1	Inclination (degrees)
Ω:	138.4	Longitude of ascending node (degrees)
T:	1970.320	Epoch of periastron passage (year)
e:	0.824	Eccentricity
ω:	292.2	Longitude of periastron (degrees)
Start-Year:	1399.13	Year
End-Year:	2650.87	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SLR15
Position:	055314.72-615022.0	Epoch-2000 right ascension and declination
WDS-ID:	05532-6150	WDS designation
Discoverer Code:	SLR15	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	40201	HD catalog number
Hipparcos number:	27822	Hipparcos catalog number
V1:	7.17	Magnitude of the primary
V2:	8.23	Magnitude of the secondary
Equinox:	2000	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:		Flags
Ephemerides:		Ephemerides
Code:	Tok2015c	Reference

Double Star Orbit for SLR15

WDS 6th Orbit including measures of SLR15

-- 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 SLR15

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.518   105.87
--------------------------
1399.13    1.513     7.28
1409.13    1.519     6.64
1419.13    1.524     6.00
1429.13    1.529     5.37
1439.13    1.533     4.75
1449.13    1.537     4.12
1459.13    1.540     3.50
1469.13    1.543     2.88
1479.13    1.545     2.26
1489.13    1.547     1.65
1499.13    1.548     1.04
1509.13    1.549     0.42
1519.13    1.549   359.81
1529.13    1.548   359.20
1539.13    1.547   358.58
1549.13    1.545   357.97
1559.13    1.543   357.35
1569.13    1.540   356.73
1579.13    1.536   356.11
1589.13    1.532   355.49
1599.13    1.527   354.86
1609.13    1.521   354.23
1619.13    1.515   353.59
1629.13    1.508   352.94
1639.13    1.499   352.29
1649.13    1.491   351.64
1659.13    1.481   350.97
1669.13    1.470   350.30
1679.13    1.458   349.61
1689.13    1.446   348.91
1699.13    1.432   348.20
1709.13    1.417   347.48
1719.13    1.401   346.74
1729.13    1.384   345.98
1739.13    1.366   345.20
1749.13    1.346   344.40
1759.13    1.325   343.58
1769.13    1.302   342.73
1779.13    1.278   341.84
1789.13    1.252   340.92
1799.13    1.224   339.96
1809.13    1.194   338.96
1819.13    1.162   337.90
1829.13    1.127   336.78
1839.13    1.090   335.58
1849.13    1.050   334.30
1859.13    1.006   332.90
1869.13    0.959   331.38
1879.13    0.907   329.69
1889.13    0.850   327.79
1899.13    0.788   325.60
1909.13    0.718   323.00
1919.13    0.639   319.80
1929.13    0.549   315.63
1939.13    0.445   309.66
1949.13    0.323   299.52
1959.13    0.187   275.15
1969.13    0.133   200.13
1979.13    0.243   152.50
1989.13    0.340   135.03
1999.13    0.407   124.51
2009.13    0.456   116.62
2019.13    0.494   110.10
2029.13    0.526   104.45
2039.13    0.554    99.41
2049.13    0.580    94.83
2059.13    0.603    90.63
2069.13    0.626    86.74
2079.13    0.648    83.12
2089.13    0.669    79.73
2099.13    0.690    76.54
2109.13    0.711    73.55
2119.13    0.731    70.72
2129.13    0.752    68.05
2139.13    0.772    65.51
2149.13    0.792    63.11
2159.13    0.812    60.82
2169.13    0.832    58.64
2179.13    0.851    56.57
2189.13    0.871    54.59
2199.13    0.891    52.69
2209.13    0.910    50.88
2219.13    0.929    49.14
2229.13    0.948    47.47
2239.13    0.967    45.87
2249.13    0.986    44.33
2259.13    1.005    42.84
2269.13    1.023    41.41
2279.13    1.041    40.03
2289.13    1.059    38.70
2299.13    1.077    37.41
2309.13    1.094    36.16
2319.13    1.112    34.95
2329.13    1.129    33.78
2339.13    1.146    32.65
2349.13    1.162    31.54
2359.13    1.179    30.47
2369.13    1.195    29.42
2379.13    1.210    28.41
2389.13    1.226    27.42
2399.13    1.241    26.45
2409.13    1.256    25.51
2419.13    1.271    24.59
2429.13    1.285    23.69
2439.13    1.299    22.81
2449.13    1.313    21.94
2459.13    1.326    21.10
2469.13    1.339    20.27
2479.13    1.352    19.46
2489.13    1.364    18.66
2499.13    1.376    17.88
2509.13    1.388    17.11
2519.13    1.399    16.35
2529.13    1.410    15.61
2539.13    1.421    14.88
2549.13    1.431    14.15
2559.13    1.441    13.44
2569.13    1.451    12.74
2579.13    1.460    12.04
2589.13    1.468    11.36
2599.13    1.477    10.68
2609.13    1.485    10.01
2619.13    1.492     9.34
2629.13    1.499     8.69
2639.13    1.506     8.04
2649.13    1.512     7.39

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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.

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Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 15:41:34