Double Star Calculator - Orbit

Orbital Elements for I1489
WDS: I1489 WDS ID/Discoverer
P: 32.790 Orbital period (years)
a: 0.27 Semi-major axis (arcseconds)
i: 84.1 Inclination (degrees)
Ω: 83.1 Longitude of ascending node (degrees)
T: 1997.790 Epoch of periastron passage (year)
e: 0.181 Eccentricity
ω: 281.6 Longitude of periastron (degrees)
Start-Year: 2008.605 Year
End-Year: 2041.395 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for I1489
Position: 043931.59-450724.4 Epoch-2000 right ascension and declination
WDS-ID: 04395-4507 WDS designation
Discoverer Code: I1489 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 29803 HD catalog number
Hipparcos number: 21698 Hipparcos catalog number
V1: 9.45 Magnitude of the primary
V2: 10.23 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Doc2012a Reference

Double Star Orbit for I1489



WDS 6th Orbit including measures of I1489

-- 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 I1489
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.186   267.98
--------------------------
2008.61    0.167    91.93
2008.70    0.164    92.23
2008.80    0.160    92.54
2008.90    0.157    92.86
2009.00    0.153    93.20
2009.10    0.150    93.55
2009.20    0.146    93.92
2009.30    0.143    94.30
2009.40    0.139    94.71
2009.50    0.135    95.14
2009.60    0.132    95.60
2009.70    0.128    96.08
2009.80    0.124    96.58
2009.90    0.121    97.12
2010.00    0.117    97.70
2010.10    0.113    98.31
2010.20    0.109    98.97
2010.30    0.105    99.67
2010.40    0.102   100.43
2010.50    0.098   101.24
2010.60    0.094   102.12
2010.70    0.090   103.08
2010.80    0.086   104.12
2010.90    0.082   105.26
2011.00    0.079   106.51
2011.10    0.075   107.88
2011.20    0.071   109.40
2011.30    0.067   111.09
2011.40    0.064   112.97
2011.50    0.060   115.08
2011.60    0.057   117.45
2011.70    0.053   120.13
2011.80    0.050   123.17
2011.90    0.047   126.63
2012.00    0.044   130.58
2012.10    0.041   135.07
2012.20    0.039   140.17
2012.30    0.037   145.90
2012.40    0.035   152.28
2012.50    0.034   159.22
2012.60    0.033   166.58
2012.70    0.033   174.16
2012.80    0.033   181.69
2012.90    0.034   188.93
2013.00    0.035   195.68
2013.10    0.037   201.84
2013.20    0.039   207.35
2013.30    0.042   212.23
2013.40    0.045   216.52
2013.50    0.048   220.29
2013.60    0.051   223.60
2013.70    0.054   226.51
2013.80    0.058   229.08
2013.90    0.061   231.35
2014.00    0.065   233.38
2014.10    0.069   235.19
2014.20    0.072   236.81
2014.30    0.076   238.28
2014.40    0.080   239.60
2014.50    0.084   240.81
2014.60    0.088   241.91
2014.70    0.091   242.92
2014.80    0.095   243.85
2014.90    0.099   244.71
2015.00    0.103   245.50
2015.10    0.107   246.23
2015.20    0.111   246.92
2015.30    0.114   247.56
2015.40    0.118   248.16
2015.50    0.122   248.72
2015.60    0.126   249.24
2015.70    0.130   249.74
2015.80    0.133   250.21
2015.90    0.137   250.65
2016.00    0.141   251.07
2016.10    0.144   251.47
2016.20    0.148   251.85
2016.30    0.152   252.21
2016.40    0.155   252.55
2016.50    0.159   252.88
2016.60    0.162   253.19
2016.70    0.166   253.50
2016.80    0.169   253.78
2016.90    0.173   254.06
2017.00    0.176   254.33
2017.10    0.179   254.58
2017.20    0.183   254.83
2017.30    0.186   255.07
2017.40    0.189   255.30
2017.50    0.192   255.52
2017.60    0.195   255.74
2017.70    0.199   255.94
2017.80    0.202   256.15
2017.90    0.205   256.34
2018.00    0.208   256.53
2018.10    0.210   256.72
2018.20    0.213   256.90
2018.30    0.216   257.07
2018.40    0.219   257.25
2018.50    0.222   257.41
2018.60    0.224   257.57
2018.70    0.227   257.73
2018.80    0.229   257.89
2018.90    0.232   258.04
2019.00    0.234   258.19
2019.10    0.237   258.34
2019.20    0.239   258.48
2019.30    0.241   258.62
2019.40    0.243   258.76
2019.50    0.246   258.89
2019.60    0.248   259.03
2019.70    0.250   259.16
2019.80    0.252   259.29
2019.90    0.253   259.41
2020.00    0.255   259.54
2020.10    0.257   259.66
2020.20    0.259   259.78
2020.30    0.260   259.90
2020.40    0.262   260.02
2020.50    0.263   260.14
2020.60    0.264   260.26
2020.70    0.266   260.37
2020.80    0.267   260.48
2020.90    0.268   260.60
2021.00    0.269   260.71
2021.10    0.270   260.82
2021.20    0.271   260.93
2021.30    0.272   261.04
2021.40    0.273   261.15
2021.50    0.273   261.26
2021.60    0.274   261.37
2021.70    0.274   261.47
2021.80    0.275   261.58
2021.90    0.275   261.69
2022.00    0.275   261.80
2022.10    0.276   261.90
2022.20    0.276   262.01
2022.30    0.276   262.12
2022.40    0.275   262.22
2022.50    0.275   262.33
2022.60    0.275   262.44
2022.70    0.275   262.54
2022.80    0.274   262.65
2022.90    0.273   262.76
2023.00    0.273   262.87
2023.10    0.272   262.98
2023.20    0.271   263.09
2023.30    0.270   263.20
2023.40    0.269   263.31
2023.50    0.268   263.42
2023.60    0.267   263.53
2023.70    0.265   263.65
2023.80    0.264   263.76
2023.90    0.262   263.88
2024.00    0.261   264.00
2024.10    0.259   264.12
2024.20    0.257   264.24
2024.30    0.255   264.36
2024.40    0.253   264.49
2024.50    0.251   264.62
2024.60    0.248   264.75
2024.70    0.246   264.88
2024.80    0.244   265.01
2024.90    0.241   265.15
2025.00    0.238   265.29
2025.10    0.236   265.44
2025.20    0.233   265.58
2025.30    0.230   265.74
2025.40    0.226   265.89
2025.50    0.223   266.05
2025.60    0.220   266.22
2025.70    0.217   266.39
2025.80    0.213   266.56
2025.90    0.209   266.74
2026.00    0.206   266.93
2026.10    0.202   267.12
2026.20    0.198   267.33
2026.30    0.194   267.54
2026.40    0.190   267.76
2026.50    0.186   267.99
2026.60    0.181   268.23
2026.70    0.177   268.48
2026.80    0.172   268.74
2026.90    0.168   269.02
2027.00    0.163   269.32
2027.10    0.159   269.63
2027.20    0.154   269.96
2027.30    0.149   270.32
2027.40    0.144   270.69
2027.50    0.139   271.10
2027.60    0.134   271.54
2027.70    0.128   272.01
2027.80    0.123   272.52
2027.90    0.118   273.07
2028.00    0.113   273.68
2028.10    0.107   274.36
2028.20    0.102   275.10
2028.30    0.096   275.93
2028.40    0.091   276.86
2028.50    0.085   277.91
2028.60    0.079   279.11
2028.70    0.074   280.49
2028.80    0.068   282.10
2028.90    0.063   284.00
2029.00    0.057   286.27
2029.10    0.052   289.02
2029.20    0.046   292.43
2029.30    0.041   296.71
2029.40    0.036   302.19
2029.50    0.032   309.32
2029.60    0.028   318.64
2029.70    0.025   330.57
2029.80    0.023   344.93
2029.90    0.023     0.40
2030.00    0.025    14.92
2030.10    0.027    27.06
2030.20    0.031    36.58
2030.30    0.036    43.86
2030.40    0.041    49.46
2030.50    0.046    53.83
2030.60    0.051    57.30
2030.70    0.057    60.10
2030.80    0.062    62.40
2030.90    0.068    64.33
2031.00    0.073    65.96
2031.10    0.079    67.36
2031.20    0.084    68.58
2031.30    0.090    69.64
2031.40    0.096    70.58
2031.50    0.101    71.42
2031.60    0.107    72.17
2031.70    0.112    72.85
2031.80    0.117    73.47
2031.90    0.123    74.03
2032.00    0.128    74.55
2032.10    0.133    75.02
2032.20    0.138    75.47
2032.30    0.143    75.88
2032.40    0.148    76.26
2032.50    0.153    76.62
2032.60    0.157    76.96
2032.70    0.162    77.27
2032.80    0.166    77.57
2032.90    0.171    77.86
2033.00    0.175    78.13
2033.10    0.179    78.39
2033.20    0.184    78.63
2033.30    0.188    78.87
2033.40    0.191    79.09
2033.50    0.195    79.31
2033.60    0.199    79.52
2033.70    0.203    79.72
2033.80    0.206    79.91
2033.90    0.209    80.10
2034.00    0.213    80.28
2034.10    0.216    80.46
2034.20    0.219    80.63
2034.30    0.222    80.80
2034.40    0.224    80.96
2034.50    0.227    81.12
2034.60    0.230    81.27
2034.70    0.232    81.43
2034.80    0.234    81.57
2034.90    0.236    81.72
2035.00    0.238    81.86
2035.10    0.240    82.01
2035.20    0.242    82.14
2035.30    0.244    82.28
2035.40    0.246    82.42
2035.50    0.247    82.55
2035.60    0.248    82.68
2035.70    0.250    82.81
2035.80    0.251    82.94
2035.90    0.252    83.07
2036.00    0.253    83.20
2036.10    0.253    83.32
2036.20    0.254    83.45
2036.30    0.255    83.57
2036.40    0.255    83.70
2036.50    0.256    83.82
2036.60    0.256    83.95
2036.70    0.256    84.07
2036.80    0.256    84.19
2036.90    0.256    84.32
2037.00    0.256    84.44
2037.10    0.255    84.56
2037.20    0.255    84.69
2037.30    0.255    84.81
2037.40    0.254    84.94
2037.50    0.253    85.06
2037.60    0.253    85.19
2037.70    0.252    85.32
2037.80    0.251    85.45
2037.90    0.250    85.57
2038.00    0.249    85.71
2038.10    0.247    85.84
2038.20    0.246    85.97
2038.30    0.245    86.10
2038.40    0.243    86.24
2038.50    0.242    86.38
2038.60    0.240    86.52
2038.70    0.238    86.66
2038.80    0.237    86.80
2038.90    0.235    86.95
2039.00    0.233    87.10
2039.10    0.231    87.25
2039.20    0.229    87.40
2039.30    0.226    87.56
2039.40    0.224    87.72
2039.50    0.222    87.88
2039.60    0.220    88.04
2039.70    0.217    88.21
2039.80    0.215    88.39
2039.90    0.212    88.57
2040.00    0.209    88.75
2040.10    0.207    88.94
2040.20    0.204    89.13
2040.30    0.201    89.32
2040.40    0.198    89.53
2040.50    0.195    89.74
2040.60    0.192    89.95
2040.70    0.189    90.17
2040.80    0.186    90.40
2040.90    0.183    90.64
2041.00    0.180    90.89
2041.10    0.177    91.14
2041.20    0.173    91.40
2041.30    0.170    91.68



 

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 15:28:25


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