Double Star Calculator - Orbit

Orbital Elements for HO3AB
WDS: HO3AB WDS ID/Discoverer
P: 70.340 Orbital period (years)
a: 0.393 Semi-major axis (arcseconds)
i: 112.3 Inclination (degrees)
Ω: 118.9 Longitude of ascending node (degrees)
T: 1983.620 Epoch of periastron passage (year)
e: 0.331 Eccentricity
ω: 137.8 Longitude of periastron (degrees)
Start-Year: 1989.83 Year
End-Year: 2060.17 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HO3AB
Position: 003329.97+400620.2 Epoch-2000 right ascension and declination
WDS-ID: 00335+4006 WDS designation
Discoverer Code: HO3AB Discover designation and components
ADS number: 463 Aitken Double Star catalog
HD number: 2993 HD catalog number
Hipparcos number: 2643 Hipparcos catalog number
V1: 8.09 Magnitude of the primary
V2: 9.72 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2017a Reference

Double Star Orbit for HO3AB



WDS 6th Orbit including measures of HO3AB

-- 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 HO3AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.478   127.06
--------------------------
1989.83    0.288   291.58
1989.93    0.288   291.24
1990.03    0.287   290.90
1990.13    0.287   290.55
1990.23    0.287   290.21
1990.33    0.287   289.87
1990.43    0.286   289.52
1990.53    0.286   289.18
1990.63    0.285   288.83
1990.73    0.285   288.48
1990.83    0.284   288.13
1990.93    0.284   287.78
1991.03    0.283   287.43
1991.13    0.283   287.08
1991.23    0.282   286.72
1991.33    0.281   286.36
1991.43    0.281   286.01
1991.53    0.280   285.65
1991.63    0.279   285.28
1991.73    0.278   284.92
1991.83    0.278   284.55
1991.93    0.277   284.18
1992.03    0.276   283.81
1992.13    0.275   283.44
1992.23    0.274   283.06
1992.33    0.273   282.69
1992.43    0.272   282.31
1992.53    0.271   281.92
1992.63    0.270   281.53
1992.73    0.269   281.15
1992.83    0.268   280.75
1992.93    0.267   280.36
1993.03    0.266   279.96
1993.13    0.265   279.55
1993.23    0.263   279.15
1993.33    0.262   278.74
1993.43    0.261   278.33
1993.53    0.260   277.91
1993.63    0.259   277.49
1993.73    0.257   277.06
1993.83    0.256   276.63
1993.93    0.255   276.20
1994.03    0.254   275.76
1994.13    0.252   275.32
1994.23    0.251   274.87
1994.33    0.250   274.42
1994.43    0.248   273.96
1994.53    0.247   273.50
1994.63    0.246   273.03
1994.73    0.244   272.56
1994.83    0.243   272.08
1994.93    0.241   271.60
1995.03    0.240   271.11
1995.13    0.239   270.62
1995.23    0.237   270.12
1995.33    0.236   269.61
1995.43    0.234   269.10
1995.53    0.233   268.58
1995.63    0.232   268.06
1995.73    0.230   267.53
1995.83    0.229   266.99
1995.93    0.227   266.45
1996.03    0.226   265.90
1996.13    0.224   265.34
1996.23    0.223   264.77
1996.33    0.222   264.20
1996.43    0.220   263.62
1996.53    0.219   263.03
1996.63    0.217   262.44
1996.73    0.216   261.84
1996.83    0.215   261.22
1996.93    0.213   260.61
1997.03    0.212   259.98
1997.13    0.210   259.34
1997.23    0.209   258.70
1997.33    0.208   258.05
1997.43    0.206   257.39
1997.53    0.205   256.72
1997.63    0.204   256.04
1997.73    0.202   255.36
1997.83    0.201   254.66
1997.93    0.200   253.96
1998.03    0.199   253.24
1998.13    0.197   252.52
1998.23    0.196   251.79
1998.33    0.195   251.05
1998.43    0.194   250.30
1998.53    0.192   249.54
1998.63    0.191   248.77
1998.73    0.190   247.99
1998.83    0.189   247.20
1998.93    0.188   246.41
1999.03    0.187   245.60
1999.13    0.186   244.79
1999.23    0.185   243.96
1999.33    0.184   243.13
1999.43    0.183   242.29
1999.53    0.182   241.44
1999.63    0.181   240.58
1999.73    0.180   239.71
1999.83    0.179   238.83
1999.93    0.178   237.95
2000.03    0.178   237.05
2000.13    0.177   236.15
2000.23    0.176   235.24
2000.33    0.175   234.33
2000.43    0.175   233.40
2000.53    0.174   232.48
2000.63    0.174   231.54
2000.73    0.173   230.60
2000.83    0.172   229.65
2000.93    0.172   228.69
2001.03    0.172   227.73
2001.13    0.171   226.77
2001.23    0.171   225.80
2001.33    0.170   224.83
2001.43    0.170   223.85
2001.53    0.170   222.88
2001.63    0.170   221.89
2001.73    0.170   220.91
2001.83    0.169   219.93
2001.93    0.169   218.94
2002.03    0.169   217.95
2002.13    0.169   216.96
2002.23    0.169   215.98
2002.33    0.169   214.99
2002.43    0.169   214.00
2002.53    0.170   213.02
2002.63    0.170   212.04
2002.73    0.170   211.06
2002.83    0.170   210.08
2002.93    0.171   209.11
2003.03    0.171   208.14
2003.13    0.171   207.17
2003.23    0.172   206.21
2003.33    0.172   205.26
2003.43    0.173   204.31
2003.53    0.173   203.36
2003.63    0.174   202.42
2003.73    0.175   201.49
2003.83    0.175   200.57
2003.93    0.176   199.65
2004.03    0.177   198.74
2004.13    0.178   197.84
2004.23    0.178   196.94
2004.33    0.179   196.06
2004.43    0.180   195.18
2004.53    0.181   194.31
2004.63    0.182   193.45
2004.73    0.183   192.60
2004.83    0.184   191.76
2004.93    0.185   190.93
2005.03    0.186   190.10
2005.13    0.187   189.29
2005.23    0.188   188.48
2005.33    0.189   187.69
2005.43    0.191   186.90
2005.53    0.192   186.13
2005.63    0.193   185.36
2005.73    0.194   184.61
2005.83    0.195   183.86
2005.93    0.197   183.13
2006.03    0.198   182.40
2006.13    0.199   181.68
2006.23    0.201   180.98
2006.33    0.202   180.28
2006.43    0.204   179.59
2006.53    0.205   178.92
2006.63    0.206   178.25
2006.73    0.208   177.59
2006.83    0.209   176.94
2006.93    0.211   176.30
2007.03    0.212   175.67
2007.13    0.214   175.04
2007.23    0.216   174.43
2007.33    0.217   173.83
2007.43    0.219   173.23
2007.53    0.220   172.64
2007.63    0.222   172.06
2007.73    0.224   171.49
2007.83    0.225   170.93
2007.93    0.227   170.38
2008.03    0.229   169.83
2008.13    0.230   169.29
2008.23    0.232   168.76
2008.33    0.234   168.24
2008.43    0.235   167.72
2008.53    0.237   167.22
2008.63    0.239   166.72
2008.73    0.240   166.22
2008.83    0.242   165.74
2008.93    0.244   165.26
2009.03    0.246   164.78
2009.13    0.247   164.32
2009.23    0.249   163.86
2009.33    0.251   163.41
2009.43    0.253   162.96
2009.53    0.254   162.52
2009.63    0.256   162.09
2009.73    0.258   161.66
2009.83    0.260   161.24
2009.93    0.262   160.82
2010.03    0.263   160.41
2010.13    0.265   160.00
2010.23    0.267   159.60
2010.33    0.269   159.21
2010.43    0.271   158.82
2010.53    0.272   158.44
2010.63    0.274   158.06
2010.73    0.276   157.69
2010.83    0.278   157.32
2010.93    0.280   156.95
2011.03    0.282   156.59
2011.13    0.283   156.24
2011.23    0.285   155.89
2011.33    0.287   155.54
2011.43    0.289   155.20
2011.53    0.291   154.86
2011.63    0.292   154.53
2011.73    0.294   154.20
2011.83    0.296   153.88
2011.93    0.298   153.56
2012.03    0.300   153.24
2012.13    0.302   152.93
2012.23    0.303   152.62
2012.33    0.305   152.31
2012.43    0.307   152.01
2012.53    0.309   151.71
2012.63    0.311   151.42
2012.73    0.312   151.12
2012.83    0.314   150.83
2012.93    0.316   150.55
2013.03    0.318   150.27
2013.13    0.319   149.99
2013.23    0.321   149.71
2013.33    0.323   149.44
2013.43    0.325   149.17
2013.53    0.327   148.90
2013.63    0.328   148.64
2013.73    0.330   148.38
2013.83    0.332   148.12
2013.93    0.334   147.86
2014.03    0.335   147.61
2014.13    0.337   147.36
2014.23    0.339   147.11
2014.33    0.341   146.87
2014.43    0.342   146.63
2014.53    0.344   146.38
2014.63    0.346   146.15
2014.73    0.347   145.91
2014.83    0.349   145.68
2014.93    0.351   145.45
2015.03    0.352   145.22
2015.13    0.354   144.99
2015.23    0.356   144.77
2015.33    0.357   144.54
2015.43    0.359   144.32
2015.53    0.361   144.10
2015.63    0.362   143.89
2015.73    0.364   143.67
2015.83    0.366   143.46
2015.93    0.367   143.25
2016.03    0.369   143.04
2016.13    0.370   142.83
2016.23    0.372   142.63
2016.33    0.374   142.42
2016.43    0.375   142.22
2016.53    0.377   142.02
2016.63    0.378   141.82
2016.73    0.380   141.63
2016.83    0.381   141.43
2016.93    0.383   141.24
2017.03    0.384   141.04
2017.13    0.386   140.85
2017.23    0.387   140.66
2017.33    0.389   140.48
2017.43    0.390   140.29
2017.53    0.392   140.11
2017.63    0.393   139.92
2017.73    0.395   139.74
2017.83    0.396   139.56
2017.93    0.398   139.38
2018.03    0.399   139.20
2018.13    0.401   139.02
2018.23    0.402   138.85
2018.33    0.403   138.67
2018.43    0.405   138.50
2018.53    0.406   138.33
2018.63    0.408   138.16
2018.73    0.409   137.99
2018.83    0.410   137.82
2018.93    0.412   137.65
2019.03    0.413   137.49
2019.13    0.414   137.32
2019.23    0.416   137.16
2019.33    0.417   136.99
2019.43    0.418   136.83
2019.53    0.420   136.67
2019.63    0.421   136.51
2019.73    0.422   136.35
2019.83    0.423   136.19
2019.93    0.425   136.03
2020.03    0.426   135.88
2020.13    0.427   135.72
2020.23    0.428   135.57
2020.33    0.429   135.41
2020.43    0.431   135.26
2020.53    0.432   135.11
2020.63    0.433   134.96
2020.73    0.434   134.80
2020.83    0.435   134.65
2020.93    0.436   134.51
2021.03    0.437   134.36
2021.13    0.438   134.21
2021.23    0.440   134.06
2021.33    0.441   133.92
2021.43    0.442   133.77
2021.53    0.443   133.63
2021.63    0.444   133.48
2021.73    0.445   133.34
2021.83    0.446   133.20
2021.93    0.447   133.05
2022.03    0.448   132.91
2022.13    0.449   132.77
2022.23    0.450   132.63
2022.33    0.451   132.49
2022.43    0.452   132.35
2022.53    0.453   132.21
2022.63    0.453   132.08
2022.73    0.454   131.94
2022.83    0.455   131.80
2022.93    0.456   131.67
2023.03    0.457   131.53
2023.13    0.458   131.39
2023.23    0.459   131.26
2023.33    0.459   131.13
2023.43    0.460   130.99
2023.53    0.461   130.86
2023.63    0.462   130.73
2023.73    0.463   130.59
2023.83    0.463   130.46
2023.93    0.464   130.33
2024.03    0.465   130.20
2024.13    0.465   130.07
2024.23    0.466   129.94
2024.33    0.467   129.81
2024.43    0.467   129.68
2024.53    0.468   129.55
2024.63    0.469   129.42
2024.73    0.469   129.29
2024.83    0.470   129.16
2024.93    0.471   129.03
2025.03    0.471   128.91
2025.13    0.472   128.78
2025.23    0.472   128.65
2025.33    0.473   128.52
2025.43    0.473   128.40
2025.53    0.474   128.27
2025.63    0.474   128.15
2025.73    0.475   128.02
2025.83    0.475   127.89
2025.93    0.476   127.77
2026.03    0.476   127.64
2026.13    0.476   127.52
2026.23    0.477   127.40
2026.33    0.477   127.27
2026.43    0.478   127.15
2026.53    0.478   127.02
2026.63    0.478   126.90
2026.73    0.479   126.78
2026.83    0.479   126.65
2026.93    0.479   126.53
2027.03    0.479   126.41
2027.13    0.480   126.28
2027.23    0.480   126.16
2027.33    0.480   126.04
2027.43    0.480   125.91
2027.53    0.481   125.79
2027.63    0.481   125.67
2027.73    0.481   125.55
2027.83    0.481   125.42
2027.93    0.481   125.30
2028.03    0.481   125.18
2028.13    0.481   125.06
2028.23    0.481   124.94
2028.33    0.481   124.81
2028.43    0.482   124.69
2028.53    0.482   124.57
2028.63    0.482   124.45
2028.73    0.482   124.32
2028.83    0.482   124.20
2028.93    0.481   124.08
2029.03    0.481   123.96
2029.13    0.481   123.84
2029.23    0.481   123.71
2029.33    0.481   123.59
2029.43    0.481   123.47
2029.53    0.481   123.35
2029.63    0.481   123.22
2029.73    0.480   123.10
2029.83    0.480   122.98
2029.93    0.480   122.86
2030.03    0.480   122.73
2030.13    0.480   122.61
2030.23    0.479   122.49
2030.33    0.479   122.36
2030.43    0.479   122.24
2030.53    0.478   122.12
2030.63    0.478   121.99
2030.73    0.478   121.87
2030.83    0.477   121.75
2030.93    0.477   121.62
2031.03    0.476   121.50
2031.13    0.476   121.37
2031.23    0.475   121.25
2031.33    0.475   121.12
2031.43    0.474   121.00
2031.53    0.474   120.87
2031.63    0.473   120.74
2031.73    0.473   120.62
2031.83    0.472   120.49
2031.93    0.472   120.36
2032.03    0.471   120.24
2032.13    0.470   120.11
2032.23    0.470   119.98
2032.33    0.469   119.85
2032.43    0.468   119.72
2032.53    0.468   119.59
2032.63    0.467   119.46
2032.73    0.466   119.33
2032.83    0.465   119.20
2032.93    0.465   119.07
2033.03    0.464   118.94
2033.13    0.463   118.81
2033.23    0.462   118.68
2033.33    0.461   118.54
2033.43    0.460   118.41
2033.53    0.460   118.28
2033.63    0.459   118.14
2033.73    0.458   118.01
2033.83    0.457   117.87
2033.93    0.456   117.74
2034.03    0.455   117.60
2034.13    0.454   117.46
2034.23    0.453   117.33
2034.33    0.451   117.19
2034.43    0.450   117.05
2034.53    0.449   116.91
2034.63    0.448   116.77
2034.73    0.447   116.63
2034.83    0.446   116.48
2034.93    0.445   116.34
2035.03    0.443   116.20
2035.13    0.442   116.05
2035.23    0.441   115.91
2035.33    0.440   115.76
2035.43    0.438   115.62
2035.53    0.437   115.47
2035.63    0.436   115.32
2035.73    0.434   115.17
2035.83    0.433   115.02
2035.93    0.431   114.87
2036.03    0.430   114.71
2036.13    0.428   114.56
2036.23    0.427   114.41
2036.33    0.425   114.25
2036.43    0.424   114.09
2036.53    0.422   113.94
2036.63    0.421   113.78
2036.73    0.419   113.62
2036.83    0.418   113.45
2036.93    0.416   113.29
2037.03    0.414   113.13
2037.13    0.413   112.96
2037.23    0.411   112.79
2037.33    0.409   112.63
2037.43    0.407   112.46
2037.53    0.406   112.28
2037.63    0.404   112.11
2037.73    0.402   111.94
2037.83    0.400   111.76
2037.93    0.398   111.58
2038.03    0.396   111.41
2038.13    0.395   111.22
2038.23    0.393   111.04
2038.33    0.391   110.86
2038.43    0.389   110.67
2038.53    0.387   110.48
2038.63    0.385   110.29
2038.73    0.383   110.10
2038.83    0.381   109.91
2038.93    0.378   109.71
2039.03    0.376   109.51
2039.13    0.374   109.31
2039.23    0.372   109.11
2039.33    0.370   108.90
2039.43    0.368   108.69
2039.53    0.365   108.48
2039.63    0.363   108.27
2039.73    0.361   108.05
2039.83    0.359   107.83
2039.93    0.356   107.61
2040.03    0.354   107.39
2040.13    0.352   107.16
2040.23    0.349   106.93
2040.33    0.347   106.69
2040.43    0.344   106.46
2040.53    0.342   106.22
2040.63    0.339   105.97
2040.73    0.337   105.73
2040.83    0.334   105.47
2040.93    0.332   105.22
2041.03    0.329   104.96
2041.13    0.327   104.70
2041.23    0.324   104.43
2041.33    0.321   104.16
2041.43    0.319   103.88
2041.53    0.316   103.60
2041.63    0.313   103.31
2041.73    0.311   103.02
2041.83    0.308   102.73
2041.93    0.305   102.43
2042.03    0.302   102.12
2042.13    0.300   101.81
2042.23    0.297   101.49
2042.33    0.294   101.16
2042.43    0.291   100.83
2042.53    0.288   100.50
2042.63    0.285   100.15
2042.73    0.282    99.80
2042.83    0.279    99.44
2042.93    0.276    99.08
2043.03    0.274    98.70
2043.13    0.271    98.32
2043.23    0.268    97.93
2043.33    0.265    97.53
2043.43    0.261    97.12
2043.53    0.258    96.70
2043.63    0.255    96.27
2043.73    0.252    95.83
2043.83    0.249    95.38
2043.93    0.246    94.92
2044.03    0.243    94.45
2044.13    0.240    93.96
2044.23    0.237    93.46
2044.33    0.234    92.95
2044.43    0.230    92.43
2044.53    0.227    91.89
2044.63    0.224    91.33
2044.73    0.221    90.76
2044.83    0.218    90.17
2044.93    0.215    89.56
2045.03    0.211    88.94
2045.13    0.208    88.30
2045.23    0.205    87.63
2045.33    0.202    86.95
2045.43    0.199    86.24
2045.53    0.195    85.51
2045.63    0.192    84.76
2045.73    0.189    83.98
2045.83    0.186    83.17
2045.93    0.183    82.34
2046.03    0.180    81.48
2046.13    0.176    80.58
2046.23    0.173    79.66
2046.33    0.170    78.70
2046.43    0.167    77.70
2046.53    0.164    76.67
2046.63    0.161    75.60
2046.73    0.158    74.49
2046.83    0.155    73.34
2046.93    0.152    72.14
2047.03    0.149    70.90
2047.13    0.147    69.61
2047.23    0.144    68.27
2047.33    0.141    66.87
2047.43    0.139    65.43
2047.53    0.136    63.93
2047.63    0.134    62.37
2047.73    0.131    60.75
2047.83    0.129    59.08
2047.93    0.127    57.34
2048.03    0.124    55.55
2048.13    0.122    53.69
2048.23    0.121    51.77
2048.33    0.119    49.79
2048.43    0.117    47.75
2048.53    0.115    45.66
2048.63    0.114    43.51
2048.73    0.113    41.31
2048.83    0.112    39.06
2048.93    0.111    36.77
2049.03    0.110    34.44
2049.13    0.109    32.09
2049.23    0.109    29.70
2049.33    0.108    27.30
2049.43    0.108    24.89
2049.53    0.108    22.48
2049.63    0.109    20.07
2049.73    0.109    17.67
2049.83    0.109    15.29
2049.93    0.110    12.94
2050.03    0.111    10.62
2050.13    0.112     8.34
2050.23    0.113     6.11
2050.33    0.114     3.92
2050.43    0.116     1.78
2050.53    0.117   359.69
2050.63    0.119   357.67
2050.73    0.121   355.70
2050.83    0.123   353.79
2050.93    0.125   351.94
2051.03    0.127   350.15
2051.13    0.129   348.42
2051.23    0.131   346.75
2051.33    0.134   345.14
2051.43    0.136   343.58
2051.53    0.139   342.08
2051.63    0.141   340.63
2051.73    0.144   339.24
2051.83    0.146   337.89
2051.93    0.149   336.59
2052.03    0.152   335.34
2052.13    0.155   334.14
2052.23    0.157   332.97
2052.33    0.160   331.85
2052.43    0.163   330.76
2052.53    0.166   329.72
2052.63    0.169   328.70
2052.73    0.171   327.73
2052.83    0.174   326.78
2052.93    0.177   325.86
2053.03    0.180   324.98
2053.13    0.183   324.12
2053.23    0.186   323.28
2053.33    0.189   322.47
2053.43    0.191   321.69
2053.53    0.194   320.93
2053.63    0.197   320.19
2053.73    0.200   319.47
2053.83    0.202   318.77
2053.93    0.205   318.09
2054.03    0.208   317.42
2054.13    0.211   316.78
2054.23    0.213   316.15
2054.33    0.216   315.53
2054.43    0.218   314.93
2054.53    0.221   314.34
2054.63    0.223   313.77
2054.73    0.226   313.21
2054.83    0.228   312.66
2054.93    0.231   312.12
2055.03    0.233   311.59
2055.13    0.235   311.08
2055.23    0.237   310.57
2055.33    0.240   310.07
2055.43    0.242   309.58
2055.53    0.244   309.10
2055.63    0.246   308.63
2055.73    0.248   308.17
2055.83    0.250   307.71
2055.93    0.252   307.26
2056.03    0.254   306.82
2056.13    0.256   306.39
2056.23    0.257   305.96
2056.33    0.259   305.53
2056.43    0.261   305.11
2056.53    0.263   304.70
2056.63    0.264   304.29
2056.73    0.266   303.89
2056.83    0.267   303.49
2056.93    0.269   303.09
2057.03    0.270   302.70
2057.13    0.271   302.32
2057.23    0.273   301.93
2057.33    0.274   301.55
2057.43    0.275   301.18
2057.53    0.276   300.81
2057.63    0.277   300.44
2057.73    0.278   300.07
2057.83    0.279   299.70
2057.93    0.280   299.34
2058.03    0.281   298.98
2058.13    0.282   298.62
2058.23    0.282   298.27
2058.33    0.283   297.91
2058.43    0.284   297.56
2058.53    0.284   297.21
2058.63    0.285   296.86
2058.73    0.285   296.51
2058.83    0.286   296.17
2058.93    0.286   295.82
2059.03    0.287   295.48
2059.13    0.287   295.13
2059.23    0.287   294.79
2059.33    0.288   294.45
2059.43    0.288   294.11
2059.53    0.288   293.76
2059.63    0.288   293.42
2059.73    0.288   293.08
2059.83    0.288   292.74
2059.93    0.288   292.40
2060.03    0.288   292.06
2060.13    0.288   291.72






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 14:40:59



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