Double Star Calculator - Orbit

Orbital Elements for HDS399

WDS:	HDS399	WDS ID/Discoverer
P:	35.370	Orbital period (years)
a:	0.147	Semi-major axis (arcseconds)
i:	63.9	Inclination (degrees)
Ω:	237.4	Longitude of ascending node (degrees)
T:	2015.440	Epoch of periastron passage (year)
e:	0.15	Eccentricity
ω:	223.2	Longitude of periastron (degrees)
Start-Year:	2007.315	Year
End-Year:	2042.685	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS399
Position:	030840.22-480059.1	Epoch-2000 right ascension and declination
WDS-ID:	03087-4801	WDS designation
Discoverer Code:	HDS399	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.57	Magnitude of the primary
V2:	9.95	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	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:	Tok2019d	Reference

Double Star Orbit for HDS399

WDS 6th Orbit including measures of HDS399

-- 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 HDS399

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.156   233.15
--------------------------
2007.32    0.097    23.59
2007.41    0.099    24.58
2007.51    0.100    25.55
2007.61    0.101    26.50
2007.71    0.102    27.43
2007.81    0.103    28.34
2007.91    0.104    29.22
2008.01    0.106    30.09
2008.11    0.107    30.94
2008.21    0.108    31.77
2008.31    0.109    32.58
2008.41    0.110    33.38
2008.51    0.111    34.16
2008.61    0.112    34.93
2008.71    0.113    35.68
2008.81    0.114    36.42
2008.91    0.115    37.14
2009.01    0.116    37.86
2009.11    0.117    38.56
2009.21    0.118    39.25
2009.31    0.119    39.93
2009.41    0.120    40.60
2009.51    0.121    41.26
2009.61    0.122    41.91
2009.71    0.122    42.55
2009.81    0.123    43.19
2009.91    0.124    43.82
2010.01    0.125    44.44
2010.11    0.125    45.05
2010.21    0.126    45.66
2010.31    0.126    46.26
2010.41    0.127    46.86
2010.51    0.127    47.45
2010.61    0.128    48.04
2010.71    0.128    48.62
2010.81    0.129    49.20
2010.91    0.129    49.77
2011.01    0.129    50.35
2011.11    0.130    50.92
2011.21    0.130    51.49
2011.31    0.130    52.05
2011.41    0.130    52.62
2011.51    0.130    53.18
2011.61    0.130    53.75
2011.71    0.130    54.31
2011.81    0.130    54.87
2011.91    0.130    55.44
2012.01    0.130    56.00
2012.11    0.130    56.57
2012.21    0.130    57.14
2012.31    0.129    57.71
2012.41    0.129    58.28
2012.51    0.129    58.86
2012.61    0.128    59.43
2012.71    0.128    60.02
2012.81    0.127    60.61
2012.91    0.127    61.20
2013.01    0.126    61.80
2013.11    0.125    62.40
2013.21    0.125    63.01
2013.31    0.124    63.63
2013.41    0.123    64.26
2013.51    0.122    64.89
2013.61    0.122    65.53
2013.71    0.121    66.18
2013.81    0.120    66.85
2013.91    0.119    67.52
2014.01    0.118    68.21
2014.11    0.117    68.90
2014.21    0.115    69.62
2014.31    0.114    70.34
2014.41    0.113    71.08
2014.51    0.112    71.84
2014.61    0.110    72.62
2014.71    0.109    73.41
2014.81    0.108    74.23
2014.91    0.106    75.06
2015.01    0.105    75.92
2015.11    0.103    76.80
2015.21    0.102    77.71
2015.31    0.100    78.64
2015.41    0.099    79.60
2015.51    0.097    80.59
2015.61    0.096    81.62
2015.71    0.094    82.68
2015.81    0.093    83.78
2015.91    0.091    84.91
2016.01    0.089    86.09
2016.11    0.088    87.31
2016.21    0.086    88.58
2016.31    0.084    89.89
2016.41    0.083    91.26
2016.51    0.081    92.68
2016.61    0.080    94.16
2016.71    0.078    95.71
2016.81    0.076    97.31
2016.91    0.075    98.99
2017.01    0.073   100.73
2017.11    0.072   102.55
2017.21    0.070   104.45
2017.31    0.069   106.42
2017.41    0.068   108.47
2017.51    0.066   110.61
2017.61    0.065   112.83
2017.71    0.064   115.14
2017.81    0.063   117.53
2017.91    0.062   120.00
2018.01    0.061   122.54
2018.11    0.060   125.17
2018.21    0.059   127.86
2018.31    0.059   130.61
2018.41    0.058   133.42
2018.51    0.058   136.27
2018.61    0.057   139.16
2018.71    0.057   142.06
2018.81    0.057   144.98
2018.91    0.057   147.89
2019.01    0.058   150.79
2019.11    0.058   153.66
2019.21    0.058   156.50
2019.31    0.059   159.28
2019.41    0.060   162.01
2019.51    0.060   164.67
2019.61    0.061   167.26
2019.71    0.062   169.77
2019.81    0.063   172.21
2019.91    0.064   174.56
2020.01    0.066   176.82
2020.11    0.067   179.00
2020.21    0.068   181.09
2020.31    0.070   183.10
2020.41    0.071   185.03
2020.51    0.073   186.88
2020.61    0.074   188.65
2020.71    0.076   190.35
2020.81    0.077   191.98
2020.91    0.079   193.54
2021.01    0.081   195.03
2021.11    0.083   196.47
2021.21    0.084   197.84
2021.31    0.086   199.16
2021.41    0.088   200.42
2021.51    0.090   201.64
2021.61    0.091   202.81
2021.71    0.093   203.94
2021.81    0.095   205.02
2021.91    0.097   206.06
2022.01    0.098   207.07
2022.11    0.100   208.04
2022.21    0.102   208.97
2022.31    0.104   209.88
2022.41    0.105   210.75
2022.51    0.107   211.60
2022.61    0.109   212.42
2022.71    0.111   213.21
2022.81    0.112   213.98
2022.91    0.114   214.73
2023.01    0.116   215.46
2023.11    0.117   216.16
2023.21    0.119   216.85
2023.31    0.120   217.52
2023.41    0.122   218.17
2023.51    0.123   218.81
2023.61    0.125   219.43
2023.71    0.126   220.03
2023.81    0.128   220.63
2023.91    0.129   221.20
2024.01    0.131   221.77
2024.11    0.132   222.32
2024.21    0.134   222.86
2024.31    0.135   223.40
2024.41    0.136   223.92
2024.51    0.137   224.43
2024.61    0.139   224.93
2024.71    0.140   225.42
2024.81    0.141   225.91
2024.91    0.142   226.39
2025.01    0.143   226.86
2025.11    0.144   227.32
2025.21    0.145   227.77
2025.31    0.146   228.22
2025.41    0.147   228.67
2025.51    0.148   229.10
2025.61    0.149   229.53
2025.71    0.150   229.96
2025.81    0.151   230.38
2025.91    0.152   230.80
2026.01    0.153   231.21
2026.11    0.154   231.62
2026.21    0.154   232.02
2026.31    0.155   232.42
2026.41    0.156   232.82
2026.51    0.156   233.21
2026.61    0.157   233.60
2026.71    0.158   233.99
2026.81    0.158   234.37
2026.91    0.159   234.75
2027.01    0.159   235.13
2027.11    0.160   235.51
2027.21    0.160   235.88
2027.31    0.160   236.26
2027.41    0.161   236.63
2027.51    0.161   237.00
2027.61    0.161   237.37
2027.71    0.162   237.73
2027.81    0.162   238.10
2027.91    0.162   238.46
2028.01    0.162   238.83
2028.11    0.162   239.19
2028.21    0.162   239.55
2028.31    0.162   239.92
2028.41    0.162   240.28
2028.51    0.162   240.64
2028.61    0.162   241.00
2028.71    0.162   241.37
2028.81    0.162   241.73
2028.91    0.162   242.09
2029.01    0.162   242.46
2029.11    0.162   242.82
2029.21    0.162   243.19
2029.31    0.161   243.55
2029.41    0.161   243.92
2029.51    0.161   244.29
2029.61    0.161   244.66
2029.71    0.160   245.03
2029.81    0.160   245.40
2029.91    0.159   245.78
2030.01    0.159   246.16
2030.11    0.159   246.54
2030.21    0.158   246.92
2030.31    0.158   247.30
2030.41    0.157   247.69
2030.51    0.156   248.08
2030.61    0.156   248.47
2030.71    0.155   248.87
2030.81    0.155   249.26
2030.91    0.154   249.67
2031.01    0.153   250.07
2031.11    0.153   250.48
2031.21    0.152   250.89
2031.31    0.151   251.31
2031.41    0.150   251.73
2031.51    0.149   252.16
2031.61    0.149   252.59
2031.71    0.148   253.03
2031.81    0.147   253.47
2031.91    0.146   253.92
2032.01    0.145   254.37
2032.11    0.144   254.83
2032.21    0.143   255.29
2032.31    0.142   255.76
2032.41    0.141   256.24
2032.51    0.140   256.72
2032.61    0.139   257.22
2032.71    0.138   257.71
2032.81    0.137   258.22
2032.91    0.136   258.74
2033.01    0.135   259.26
2033.11    0.133   259.79
2033.21    0.132   260.34
2033.31    0.131   260.89
2033.41    0.130   261.45
2033.51    0.129   262.02
2033.61    0.128   262.60
2033.71    0.126   263.20
2033.81    0.125   263.80
2033.91    0.124   264.42
2034.01    0.123   265.05
2034.11    0.121   265.69
2034.21    0.120   266.35
2034.31    0.119   267.02
2034.41    0.117   267.71
2034.51    0.116   268.41
2034.61    0.115   269.13
2034.71    0.114   269.86
2034.81    0.112   270.61
2034.91    0.111   271.38
2035.01    0.110   272.17
2035.11    0.108   272.97
2035.21    0.107   273.80
2035.31    0.106   274.65
2035.41    0.104   275.52
2035.51    0.103   276.41
2035.61    0.102   277.32
2035.71    0.100   278.26
2035.81    0.099   279.23
2035.91    0.098   280.22
2036.01    0.096   281.23
2036.11    0.095   282.28
2036.21    0.094   283.35
2036.31    0.093   284.45
2036.41    0.091   285.58
2036.51    0.090   286.75
2036.61    0.089   287.94
2036.71    0.088   289.17
2036.81    0.087   290.43
2036.91    0.085   291.73
2037.01    0.084   293.06
2037.11    0.083   294.42
2037.21    0.082   295.82
2037.31    0.081   297.26
2037.41    0.080   298.73
2037.51    0.079   300.24
2037.61    0.078   301.79
2037.71    0.077   303.37
2037.81    0.077   304.99
2037.91    0.076   306.64
2038.01    0.075   308.32
2038.11    0.074   310.04
2038.21    0.074   311.79
2038.31    0.073   313.57
2038.41    0.073   315.38
2038.51    0.072   317.21
2038.61    0.072   319.06
2038.71    0.071   320.94
2038.81    0.071   322.83
2038.91    0.071   324.74
2039.01    0.071   326.66
2039.11    0.070   328.59
2039.21    0.070   330.52
2039.31    0.070   332.46
2039.41    0.070   334.39
2039.51    0.071   336.32
2039.61    0.071   338.23
2039.71    0.071   340.14
2039.81    0.071   342.03
2039.91    0.072   343.90
2040.01    0.072   345.76
2040.11    0.073   347.58
2040.21    0.073   349.39
2040.31    0.074   351.16
2040.41    0.074   352.91
2040.51    0.075   354.62
2040.61    0.076   356.31
2040.71    0.077   357.96
2040.81    0.077   359.57
2040.91    0.078     1.15
2041.01    0.079     2.70
2041.11    0.080     4.21
2041.21    0.081     5.68
2041.31    0.082     7.12
2041.41    0.083     8.52
2041.51    0.084     9.89
2041.61    0.085    11.23
2041.71    0.086    12.53
2041.81    0.087    13.80
2041.91    0.088    15.04
2042.01    0.090    16.25
2042.11    0.091    17.42
2042.21    0.092    18.57
2042.31    0.093    19.69
2042.41    0.094    20.78
2042.51    0.095    21.84
2042.61    0.097    22.88

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 15:08:05