Double Star Calculator - Orbit

Orbital Elements for HDS213

WDS:	HDS213	WDS ID/Discoverer
P:	54.663	Orbital period (years)
a:	0.1771	Semi-major axis (arcseconds)
i:	56.1	Inclination (degrees)
Ω:	24.2	Longitude of ascending node (degrees)
T:	2054.258	Epoch of periastron passage (year)
e:	0.862	Eccentricity
ω:	347.7	Longitude of periastron (degrees)
Start-Year:	1997.6685	Year
End-Year:	2052.3315	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS213
Position:	013521.58+112604.0	Epoch-2000 right ascension and declination
WDS-ID:	01354+1126	WDS designation
Discoverer Code:	HDS213	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	7397	Hipparcos catalog number
V1:	12.67	Magnitude of the primary
V2:	12.75	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	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:	Cve2017b	Reference

Double Star Orbit for HDS213

WDS 6th Orbit including measures of HDS213

-- 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 HDS213

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.324   197.03
--------------------------
1997.67    0.065   235.05
1997.77    0.061   236.52
1997.87    0.058   238.17
1997.97    0.054   240.02
1998.07    0.051   242.13
1998.17    0.047   244.55
1998.27    0.044   247.35
1998.37    0.040   250.66
1998.47    0.037   254.60
1998.57    0.033   259.39
1998.67    0.030   265.27
1998.77    0.027   272.59
1998.87    0.024   281.76
1998.97    0.022   293.12
1999.07    0.020   306.68
1999.17    0.019   321.75
1999.27    0.020   336.99
1999.37    0.021   351.12
1999.47    0.022     3.59
1999.57    0.024    14.56
1999.67    0.025    24.47
1999.77    0.025    33.81
1999.87    0.025    42.96
1999.97    0.025    52.14
2000.07    0.025    61.42
2000.17    0.025    70.72
2000.27    0.025    79.87
2000.37    0.026    88.66
2000.47    0.027    96.90
2000.57    0.029   104.43
2000.67    0.030   111.21
2000.77    0.032   117.24
2000.87    0.034   122.57
2000.97    0.036   127.26
2001.07    0.039   131.41
2001.17    0.041   135.07
2001.27    0.044   138.32
2001.37    0.046   141.21
2001.47    0.049   143.80
2001.57    0.051   146.13
2001.67    0.054   148.24
2001.77    0.057   150.15
2001.87    0.059   151.90
2001.97    0.062   153.50
2002.07    0.064   154.97
2002.17    0.067   156.33
2002.27    0.069   157.58
2002.37    0.072   158.75
2002.47    0.075   159.84
2002.57    0.077   160.86
2002.67    0.079   161.81
2002.77    0.082   162.71
2002.87    0.084   163.55
2002.97    0.087   164.35
2003.07    0.089   165.10
2003.17    0.092   165.82
2003.27    0.094   166.50
2003.37    0.096   167.14
2003.47    0.099   167.76
2003.57    0.101   168.35
2003.67    0.103   168.91
2003.77    0.105   169.44
2003.87    0.108   169.96
2003.97    0.110   170.45
2004.07    0.112   170.93
2004.17    0.114   171.38
2004.27    0.116   171.82
2004.37    0.118   172.25
2004.47    0.121   172.66
2004.57    0.123   173.05
2004.67    0.125   173.43
2004.77    0.127   173.80
2004.87    0.129   174.16
2004.97    0.131   174.50
2005.07    0.133   174.84
2005.17    0.135   175.17
2005.27    0.137   175.48
2005.37    0.139   175.79
2005.47    0.141   176.09
2005.57    0.143   176.38
2005.67    0.145   176.66
2005.77    0.146   176.94
2005.87    0.148   177.21
2005.97    0.150   177.47
2006.07    0.152   177.73
2006.17    0.154   177.97
2006.27    0.156   178.22
2006.37    0.157   178.46
2006.47    0.159   178.69
2006.57    0.161   178.92
2006.67    0.163   179.14
2006.77    0.164   179.36
2006.87    0.166   179.57
2006.97    0.168   179.78
2007.07    0.170   179.99
2007.17    0.171   180.19
2007.27    0.173   180.39
2007.37    0.175   180.58
2007.47    0.176   180.77
2007.57    0.178   180.96
2007.67    0.179   181.14
2007.77    0.181   181.32
2007.87    0.183   181.50
2007.97    0.184   181.67
2008.07    0.186   181.84
2008.17    0.187   182.01
2008.27    0.189   182.17
2008.37    0.190   182.34
2008.47    0.192   182.49
2008.57    0.193   182.65
2008.67    0.195   182.81
2008.77    0.196   182.96
2008.87    0.198   183.11
2008.97    0.199   183.26
2009.07    0.201   183.40
2009.17    0.202   183.55
2009.27    0.204   183.69
2009.37    0.205   183.83
2009.47    0.206   183.97
2009.57    0.208   184.10
2009.67    0.209   184.24
2009.77    0.210   184.37
2009.87    0.212   184.50
2009.97    0.213   184.63
2010.07    0.214   184.76
2010.17    0.216   184.89
2010.27    0.217   185.01
2010.37    0.218   185.13
2010.47    0.220   185.26
2010.57    0.221   185.38
2010.67    0.222   185.49
2010.77    0.224   185.61
2010.87    0.225   185.73
2010.97    0.226   185.84
2011.07    0.227   185.96
2011.17    0.228   186.07
2011.27    0.230   186.18
2011.37    0.231   186.29
2011.47    0.232   186.40
2011.57    0.233   186.51
2011.67    0.234   186.61
2011.77    0.236   186.72
2011.87    0.237   186.83
2011.97    0.238   186.93
2012.07    0.239   187.03
2012.17    0.240   187.13
2012.27    0.241   187.23
2012.37    0.242   187.33
2012.47    0.244   187.43
2012.57    0.245   187.53
2012.67    0.246   187.63
2012.77    0.247   187.72
2012.87    0.248   187.82
2012.97    0.249   187.91
2013.07    0.250   188.01
2013.17    0.251   188.10
2013.27    0.252   188.19
2013.37    0.253   188.29
2013.47    0.254   188.38
2013.57    0.255   188.47
2013.67    0.256   188.56
2013.77    0.257   188.64
2013.87    0.258   188.73
2013.97    0.259   188.82
2014.07    0.260   188.91
2014.17    0.261   188.99
2014.27    0.262   189.08
2014.37    0.263   189.16
2014.47    0.264   189.25
2014.57    0.265   189.33
2014.67    0.266   189.41
2014.77    0.266   189.50
2014.87    0.267   189.58
2014.97    0.268   189.66
2015.07    0.269   189.74
2015.17    0.270   189.82
2015.27    0.271   189.90
2015.37    0.272   189.98
2015.47    0.273   190.06
2015.57    0.273   190.14
2015.67    0.274   190.22
2015.77    0.275   190.29
2015.87    0.276   190.37
2015.97    0.277   190.45
2016.07    0.278   190.52
2016.17    0.278   190.60
2016.27    0.279   190.67
2016.37    0.280   190.75
2016.47    0.281   190.82
2016.57    0.282   190.90
2016.67    0.282   190.97
2016.77    0.283   191.04
2016.87    0.284   191.11
2016.97    0.285   191.19
2017.07    0.285   191.26
2017.17    0.286   191.33
2017.27    0.287   191.40
2017.37    0.287   191.47
2017.47    0.288   191.54
2017.57    0.289   191.61
2017.67    0.290   191.68
2017.77    0.290   191.75
2017.87    0.291   191.82
2017.97    0.292   191.89
2018.07    0.292   191.96
2018.17    0.293   192.03
2018.27    0.294   192.10
2018.37    0.294   192.16
2018.47    0.295   192.23
2018.57    0.295   192.30
2018.67    0.296   192.36
2018.77    0.297   192.43
2018.87    0.297   192.50
2018.97    0.298   192.56
2019.07    0.298   192.63
2019.17    0.299   192.69
2019.27    0.300   192.76
2019.37    0.300   192.82
2019.47    0.301   192.89
2019.57    0.301   192.95
2019.67    0.302   193.02
2019.77    0.302   193.08
2019.87    0.303   193.14
2019.97    0.304   193.21
2020.07    0.304   193.27
2020.17    0.305   193.33
2020.27    0.305   193.40
2020.37    0.306   193.46
2020.47    0.306   193.52
2020.57    0.307   193.59
2020.67    0.307   193.65
2020.77    0.308   193.71
2020.87    0.308   193.77
2020.97    0.308   193.83
2021.07    0.309   193.89
2021.17    0.309   193.95
2021.27    0.310   194.02
2021.37    0.310   194.08
2021.47    0.311   194.14
2021.57    0.311   194.20
2021.67    0.312   194.26
2021.77    0.312   194.32
2021.87    0.312   194.38
2021.97    0.313   194.44
2022.07    0.313   194.50
2022.17    0.314   194.56
2022.27    0.314   194.62
2022.37    0.314   194.67
2022.47    0.315   194.73
2022.57    0.315   194.79
2022.67    0.315   194.85
2022.77    0.316   194.91
2022.87    0.316   194.97
2022.97    0.316   195.03
2023.07    0.317   195.09
2023.17    0.317   195.14
2023.27    0.317   195.20
2023.37    0.318   195.26
2023.47    0.318   195.32
2023.57    0.318   195.38
2023.67    0.319   195.43
2023.77    0.319   195.49
2023.87    0.319   195.55
2023.97    0.319   195.60
2024.07    0.320   195.66
2024.17    0.320   195.72
2024.27    0.320   195.78
2024.37    0.320   195.83
2024.47    0.321   195.89
2024.57    0.321   195.95
2024.67    0.321   196.00
2024.77    0.321   196.06
2024.87    0.322   196.12
2024.97    0.322   196.17
2025.07    0.322   196.23
2025.17    0.322   196.29
2025.27    0.322   196.34
2025.37    0.323   196.40
2025.47    0.323   196.45
2025.57    0.323   196.51
2025.67    0.323   196.57
2025.77    0.323   196.62
2025.87    0.323   196.68
2025.97    0.324   196.73
2026.07    0.324   196.79
2026.17    0.324   196.85
2026.27    0.324   196.90
2026.37    0.324   196.96
2026.47    0.324   197.01
2026.57    0.324   197.07
2026.67    0.324   197.12
2026.77    0.324   197.18
2026.87    0.325   197.23
2026.97    0.325   197.29
2027.07    0.325   197.35
2027.17    0.325   197.40
2027.27    0.325   197.46
2027.37    0.325   197.51
2027.47    0.325   197.57
2027.57    0.325   197.62
2027.67    0.325   197.68
2027.77    0.325   197.73
2027.87    0.325   197.79
2027.97    0.325   197.84
2028.07    0.325   197.90
2028.17    0.325   197.95
2028.27    0.325   198.01
2028.37    0.325   198.06
2028.47    0.325   198.12
2028.57    0.325   198.17
2028.67    0.325   198.23
2028.77    0.325   198.29
2028.87    0.325   198.34
2028.97    0.325   198.40
2029.07    0.325   198.45
2029.17    0.325   198.51
2029.27    0.325   198.56
2029.37    0.325   198.62
2029.47    0.325   198.67
2029.57    0.324   198.73
2029.67    0.324   198.78
2029.77    0.324   198.84
2029.87    0.324   198.89
2029.97    0.324   198.95
2030.07    0.324   199.01
2030.17    0.324   199.06
2030.27    0.324   199.12
2030.37    0.324   199.17
2030.47    0.323   199.23
2030.57    0.323   199.28
2030.67    0.323   199.34
2030.77    0.323   199.40
2030.87    0.323   199.45
2030.97    0.323   199.51
2031.07    0.322   199.56
2031.17    0.322   199.62
2031.27    0.322   199.68
2031.37    0.322   199.73
2031.47    0.322   199.79
2031.57    0.321   199.85
2031.67    0.321   199.90
2031.77    0.321   199.96
2031.87    0.321   200.02
2031.97    0.320   200.07
2032.07    0.320   200.13
2032.17    0.320   200.19
2032.27    0.320   200.24
2032.37    0.319   200.30
2032.47    0.319   200.36
2032.57    0.319   200.42
2032.67    0.319   200.47
2032.77    0.318   200.53
2032.87    0.318   200.59
2032.97    0.318   200.65
2033.07    0.317   200.70
2033.17    0.317   200.76
2033.27    0.317   200.82
2033.37    0.316   200.88
2033.47    0.316   200.94
2033.57    0.316   201.00
2033.67    0.315   201.05
2033.77    0.315   201.11
2033.87    0.315   201.17
2033.97    0.314   201.23
2034.07    0.314   201.29
2034.17    0.313   201.35
2034.27    0.313   201.41
2034.37    0.313   201.47
2034.47    0.312   201.53
2034.57    0.312   201.59
2034.67    0.311   201.65
2034.77    0.311   201.71
2034.87    0.310   201.77
2034.97    0.310   201.83
2035.07    0.310   201.89
2035.17    0.309   201.95
2035.27    0.309   202.01
2035.37    0.308   202.08
2035.47    0.308   202.14
2035.57    0.307   202.20
2035.67    0.307   202.26
2035.77    0.306   202.32
2035.87    0.306   202.39
2035.97    0.305   202.45
2036.07    0.305   202.51
2036.17    0.304   202.57
2036.27    0.303   202.64
2036.37    0.303   202.70
2036.47    0.302   202.76
2036.57    0.302   202.83
2036.67    0.301   202.89
2036.77    0.301   202.96
2036.87    0.300   203.02
2036.97    0.299   203.09
2037.07    0.299   203.15
2037.17    0.298   203.22
2037.27    0.298   203.28
2037.37    0.297   203.35
2037.47    0.296   203.42
2037.57    0.296   203.48
2037.67    0.295   203.55
2037.77    0.294   203.62
2037.87    0.294   203.68
2037.97    0.293   203.75
2038.07    0.292   203.82
2038.17    0.292   203.89
2038.27    0.291   203.96
2038.37    0.290   204.03
2038.47    0.289   204.10
2038.57    0.289   204.17
2038.67    0.288   204.24
2038.77    0.287   204.31
2038.87    0.287   204.38
2038.97    0.286   204.45
2039.07    0.285   204.52
2039.17    0.284   204.59
2039.27    0.283   204.67
2039.37    0.283   204.74
2039.47    0.282   204.81
2039.57    0.281   204.89
2039.67    0.280   204.96
2039.77    0.279   205.03
2039.87    0.279   205.11
2039.97    0.278   205.19
2040.07    0.277   205.26
2040.17    0.276   205.34
2040.27    0.275   205.41
2040.37    0.274   205.49
2040.47    0.273   205.57
2040.57    0.272   205.65
2040.67    0.271   205.73
2040.77    0.271   205.81
2040.87    0.270   205.89
2040.97    0.269   205.97
2041.07    0.268   206.05
2041.17    0.267   206.13
2041.27    0.266   206.21
2041.37    0.265   206.30
2041.47    0.264   206.38
2041.57    0.263   206.46
2041.67    0.262   206.55
2041.77    0.261   206.63
2041.87    0.260   206.72
2041.97    0.259   206.81
2042.07    0.258   206.90
2042.17    0.257   206.98
2042.27    0.255   207.07
2042.37    0.254   207.16
2042.47    0.253   207.25
2042.57    0.252   207.34
2042.67    0.251   207.44
2042.77    0.250   207.53
2042.87    0.249   207.62
2042.97    0.248   207.72
2043.07    0.247   207.81
2043.17    0.245   207.91
2043.27    0.244   208.01
2043.37    0.243   208.11
2043.47    0.242   208.21
2043.57    0.241   208.31
2043.67    0.239   208.41
2043.77    0.238   208.51
2043.87    0.237   208.61
2043.97    0.236   208.72
2044.07    0.234   208.82
2044.17    0.233   208.93
2044.27    0.232   209.04
2044.37    0.230   209.15
2044.47    0.229   209.26
2044.57    0.228   209.37
2044.67    0.226   209.48
2044.77    0.225   209.60
2044.87    0.224   209.72
2044.97    0.222   209.83
2045.07    0.221   209.95
2045.17    0.219   210.07
2045.27    0.218   210.19
2045.37    0.217   210.32
2045.47    0.215   210.44
2045.57    0.214   210.57
2045.67    0.212   210.70
2045.77    0.211   210.83
2045.87    0.209   210.96
2045.97    0.208   211.10
2046.07    0.206   211.23
2046.17    0.204   211.37
2046.27    0.203   211.51
2046.37    0.201   211.66
2046.47    0.200   211.80
2046.57    0.198   211.95
2046.67    0.196   212.10
2046.77    0.195   212.25
2046.87    0.193   212.41
2046.97    0.191   212.57
2047.07    0.190   212.73
2047.17    0.188   212.89
2047.27    0.186   213.06
2047.37    0.184   213.23
2047.47    0.183   213.40
2047.57    0.181   213.58
2047.67    0.179   213.76
2047.77    0.177   213.94
2047.87    0.175   214.13
2047.97    0.173   214.32
2048.07    0.172   214.52
2048.17    0.170   214.72
2048.27    0.168   214.93
2048.37    0.166   215.14
2048.47    0.164   215.35
2048.57    0.162   215.57
2048.67    0.160   215.80
2048.77    0.158   216.03
2048.87    0.156   216.27
2048.97    0.153   216.51
2049.07    0.151   216.76
2049.17    0.149   217.02
2049.27    0.147   217.29
2049.37    0.145   217.56
2049.47    0.143   217.85
2049.57    0.140   218.14
2049.67    0.138   218.44
2049.77    0.136   218.75
2049.87    0.133   219.07
2049.97    0.131   219.41
2050.07    0.129   219.75
2050.17    0.126   220.11
2050.27    0.124   220.49
2050.37    0.121   220.87
2050.47    0.119   221.28
2050.57    0.116   221.70
2050.67    0.114   222.14
2050.77    0.111   222.61
2050.87    0.108   223.09
2050.97    0.106   223.60
2051.07    0.103   224.14
2051.17    0.100   224.70
2051.27    0.097   225.30
2051.37    0.095   225.94
2051.47    0.092   226.61
2051.57    0.089   227.33
2051.67    0.086   228.10
2051.77    0.083   228.92
2051.87    0.080   229.81
2051.97    0.076   230.77
2052.07    0.073   231.81
2052.17    0.070   232.95
2052.27    0.067   234.20

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 14:52:07