Double Star Calculator - Orbit

Orbital Elements for A2548

WDS:	A2548	WDS ID/Discoverer
P:	1100.000	Orbital period (years)
a:	0.4974	Semi-major axis (arcseconds)
i:	114.9	Inclination (degrees)
Ω:	179.2	Longitude of ascending node (degrees)
T:	1982.700	Epoch of periastron passage (year)
e:	0.575	Eccentricity
ω:	230.1	Longitude of periastron (degrees)
Start-Year:	1475.0	Year
End-Year:	2575.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2548
Position:	084524.62-001303.6	Epoch-2000 right ascension and declination
WDS-ID:	08454-0013	WDS designation
Discoverer Code:	A2548	Discover designation and components
ADS number:	6976	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.1	Magnitude of the primary
V2:	9.3	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	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:	Tok2019c	Reference

Double Star Orbit for A2548

WDS 6th Orbit including measures of A2548

-- 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 A2548

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.127   232.79
--------------------------
1475.00    0.525   148.48
1485.00    0.515   147.45
1495.00    0.505   146.38
1505.00    0.495   145.26
1515.00    0.484   144.09
1525.00    0.473   142.88
1535.00    0.462   141.60
1545.00    0.451   140.26
1555.00    0.440   138.86
1565.00    0.429   137.38
1575.00    0.417   135.82
1585.00    0.406   134.17
1595.00    0.394   132.43
1605.00    0.382   130.57
1615.00    0.371   128.61
1625.00    0.359   126.51
1635.00    0.348   124.28
1645.00    0.336   121.89
1655.00    0.325   119.35
1665.00    0.315   116.62
1675.00    0.304   113.71
1685.00    0.294   110.59
1695.00    0.285   107.26
1705.00    0.276   103.72
1715.00    0.268    99.94
1725.00    0.261    95.94
1735.00    0.254    91.73
1745.00    0.249    87.31
1755.00    0.244    82.71
1765.00    0.241    77.97
1775.00    0.239    73.12
1785.00    0.238    68.20
1795.00    0.238    63.27
1805.00    0.239    58.36
1815.00    0.241    53.53
1825.00    0.244    48.80
1835.00    0.248    44.19
1845.00    0.252    39.73
1855.00    0.257    35.43
1865.00    0.261    31.26
1875.00    0.265    27.23
1885.00    0.268    23.31
1895.00    0.271    19.47
1905.00    0.271    15.67
1915.00    0.269    11.86
1925.00    0.265     7.96
1935.00    0.257     3.86
1945.00    0.244   359.42
1955.00    0.226   354.38
1965.00    0.203   348.34
1975.00    0.175   340.54
1985.00    0.145   329.55
1995.00    0.116   312.85
2005.00    0.098   287.83
2015.00    0.101   258.61
2025.00    0.122   235.49
2035.00    0.154   220.62
2045.00    0.190   211.08
2055.00    0.226   204.56
2065.00    0.260   199.82
2075.00    0.294   196.17
2085.00    0.325   193.25
2095.00    0.354   190.83
2105.00    0.382   188.76
2115.00    0.407   186.97
2125.00    0.431   185.38
2135.00    0.453   183.95
2145.00    0.473   182.65
2155.00    0.492   181.46
2165.00    0.510   180.35
2175.00    0.526   179.31
2185.00    0.541   178.33
2195.00    0.554   177.40
2205.00    0.567   176.51
2215.00    0.578   175.66
2225.00    0.588   174.84
2235.00    0.598   174.04
2245.00    0.606   173.27
2255.00    0.613   172.52
2265.00    0.620   171.79
2275.00    0.626   171.07
2285.00    0.631   170.37
2295.00    0.635   169.67
2305.00    0.638   168.98
2315.00    0.641   168.30
2325.00    0.643   167.62
2335.00    0.644   166.95
2345.00    0.645   166.28
2355.00    0.645   165.61
2365.00    0.645   164.94
2375.00    0.643   164.26
2385.00    0.642   163.59
2395.00    0.640   162.91
2405.00    0.637   162.23
2415.00    0.634   161.53
2425.00    0.630   160.84
2435.00    0.626   160.13
2445.00    0.621   159.41
2455.00    0.616   158.68
2465.00    0.611   157.94
2475.00    0.605   157.19
2485.00    0.598   156.42
2495.00    0.591   155.63
2505.00    0.584   154.82
2515.00    0.577   153.99
2525.00    0.569   153.14
2535.00    0.561   152.27
2545.00    0.552   151.37
2555.00    0.543   150.44
2565.00    0.534   149.48

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 16:10:36