Double Star Calculator - Orbit

Orbital Elements for A494AB

WDS:	A494AB	WDS ID/Discoverer
P:	20.130	Orbital period (years)
a:	0.208	Semi-major axis (arcseconds)
i:	71.7	Inclination (degrees)
Ω:	96.8	Longitude of ascending node (degrees)
T:	1959.030	Epoch of periastron passage (year)
e:	0.392	Eccentricity
ω:	273.2	Longitude of periastron (degrees)
Start-Year:	2014.935	Year
End-Year:	2035.065	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A494AB
Position:	054253.91-064746.7	Epoch-2000 right ascension and declination
WDS-ID:	05429-0648	WDS designation
Discoverer Code:	A494AB	Discover designation and components
ADS number:	4299	Aitken Double Star catalog
HD number:	38089	HD catalog number
Hipparcos number:	26926	Hipparcos catalog number
V1:	6.51	Magnitude of the primary
V2:	7.24	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2006	Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Msn2009	Reference

Double Star Orbit for A494AB

WDS 6th Orbit including measures of A494AB

-- 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 A494AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.133   132.92
--------------------------
2014.93    0.197   266.27
2015.03    0.197   266.84
2015.13    0.198   267.41
2015.23    0.198   267.99
2015.33    0.198   268.56
2015.43    0.198   269.13
2015.53    0.197   269.70
2015.63    0.197   270.27
2015.73    0.196   270.85
2015.83    0.195   271.44
2015.93    0.194   272.02
2016.03    0.193   272.62
2016.13    0.192   273.22
2016.23    0.190   273.83
2016.33    0.188   274.46
2016.43    0.186   275.10
2016.53    0.184   275.75
2016.63    0.181   276.42
2016.73    0.179   277.11
2016.83    0.176   277.82
2016.93    0.172   278.55
2017.03    0.169   279.32
2017.13    0.165   280.12
2017.23    0.161   280.96
2017.33    0.157   281.85
2017.43    0.152   282.78
2017.53    0.147   283.78
2017.63    0.142   284.84
2017.73    0.137   286.00
2017.83    0.131   287.24
2017.93    0.125   288.61
2018.03    0.119   290.12
2018.13    0.112   291.80
2018.23    0.105   293.70
2018.33    0.098   295.86
2018.43    0.091   298.35
2018.53    0.084   301.28
2018.63    0.077   304.76
2018.73    0.069   308.98
2018.83    0.062   314.17
2018.93    0.056   320.64
2019.03    0.050   328.78
2019.13    0.045   338.93
2019.23    0.041   351.18
2019.33    0.040     4.95
2019.43    0.041    18.95
2019.53    0.043    31.76
2019.63    0.048    42.56
2019.73    0.054    51.29
2019.83    0.060    58.23
2019.93    0.067    63.78
2020.03    0.074    68.27
2020.13    0.082    71.96
2020.23    0.089    75.05
2020.33    0.096    77.68
2020.43    0.103    79.95
2020.53    0.110    81.93
2020.63    0.116    83.69
2020.73    0.122    85.26
2020.83    0.128    86.69
2020.93    0.134    87.99
2021.03    0.139    89.19
2021.13    0.144    90.30
2021.23    0.149    91.34
2021.33    0.153    92.31
2021.43    0.158    93.24
2021.53    0.161    94.11
2021.63    0.165    94.95
2021.73    0.168    95.76
2021.83    0.171    96.53
2021.93    0.174    97.28
2022.03    0.176    98.01
2022.13    0.179    98.72
2022.23    0.181    99.41
2022.33    0.182   100.09
2022.43    0.184   100.76
2022.53    0.185   101.41
2022.63    0.186   102.06
2022.73    0.187   102.70
2022.83    0.188   103.34
2022.93    0.188   103.97
2023.03    0.189   104.60
2023.13    0.189   105.23
2023.23    0.189   105.85
2023.33    0.189   106.48
2023.43    0.188   107.11
2023.53    0.188   107.74
2023.63    0.187   108.38
2023.73    0.186   109.02
2023.83    0.185   109.67
2023.93    0.184   110.32
2024.03    0.183   110.98
2024.13    0.182   111.65
2024.23    0.181   112.33
2024.33    0.179   113.02
2024.43    0.178   113.72
2024.53    0.176   114.44
2024.63    0.174   115.16
2024.73    0.173   115.91
2024.83    0.171   116.66
2024.93    0.169   117.44
2025.03    0.167   118.23
2025.13    0.165   119.05
2025.23    0.163   119.88
2025.33    0.160   120.74
2025.43    0.158   121.62
2025.53    0.156   122.52
2025.63    0.154   123.45
2025.73    0.151   124.41
2025.83    0.149   125.41
2025.93    0.147   126.43
2026.03    0.144   127.49
2026.13    0.142   128.58
2026.23    0.139   129.72
2026.33    0.137   130.89
2026.43    0.134   132.11
2026.53    0.132   133.37
2026.63    0.129   134.68
2026.73    0.127   136.04
2026.83    0.125   137.46
2026.93    0.122   138.93
2027.03    0.120   140.45
2027.13    0.117   142.04
2027.23    0.115   143.70
2027.33    0.113   145.41
2027.43    0.111   147.20
2027.53    0.109   149.06
2027.63    0.107   150.98
2027.73    0.105   152.98
2027.83    0.103   155.06
2027.93    0.101   157.20
2028.03    0.100   159.42
2028.13    0.098   161.71
2028.23    0.097   164.07
2028.33    0.095   166.50
2028.43    0.094   168.98
2028.53    0.093   171.53
2028.63    0.092   174.12
2028.73    0.092   176.75
2028.83    0.091   179.42
2028.93    0.091   182.11
2029.03    0.091   184.81
2029.13    0.091   187.52
2029.23    0.091   190.23
2029.33    0.091   192.91
2029.43    0.092   195.58
2029.53    0.093   198.21
2029.63    0.093   200.79
2029.73    0.094   203.33
2029.83    0.096   205.81
2029.93    0.097   208.23
2030.03    0.098   210.58
2030.13    0.100   212.86
2030.23    0.101   215.07
2030.33    0.103   217.21
2030.43    0.105   219.27
2030.53    0.107   221.26
2030.63    0.109   223.18
2030.73    0.111   225.03
2030.83    0.113   226.80
2030.93    0.116   228.51
2031.03    0.118   230.15
2031.13    0.120   231.73
2031.23    0.123   233.25
2031.33    0.125   234.71
2031.43    0.127   236.11
2031.53    0.130   237.46
2031.63    0.132   238.76
2031.73    0.135   240.01
2031.83    0.137   241.22
2031.93    0.140   242.38
2032.03    0.142   243.50
2032.13    0.145   244.58
2032.23    0.148   245.62
2032.33    0.150   246.63
2032.43    0.152   247.61
2032.53    0.155   248.56
2032.63    0.157   249.48
2032.73    0.160   250.37
2032.83    0.162   251.23
2032.93    0.164   252.07
2033.03    0.167   252.88
2033.13    0.169   253.68
2033.23    0.171   254.45
2033.33    0.173   255.21
2033.43    0.175   255.95
2033.53    0.177   256.67
2033.63    0.179   257.37
2033.73    0.181   258.06
2033.83    0.183   258.74
2033.93    0.184   259.40
2034.03    0.186   260.05
2034.13    0.188   260.69
2034.23    0.189   261.32
2034.33    0.190   261.94
2034.43    0.192   262.55
2034.53    0.193   263.16
2034.63    0.194   263.76
2034.73    0.195   264.35
2034.83    0.196   264.94
2034.93    0.196   265.52
2035.03    0.197   266.10

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 15:40:17