☰Double Star Calculator - Results

WARNING: Invalid or missing GAIA IDs


Measurements for STF 1523 AB
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
--------------------------------------------------------------------------------------------------
11182+3132  STF 1523    AB    1    2.75"    135.0°   B2025.325  HWI  120/900 APO   ASI678MM
11182+3132  STF 1523    AB    3    2.67"    133.0°   B2026.311  HWI  120/900 APO   ASI678MM

-- Image of STF-1523-AB-taken with Equinox 120/900 APO --


WDS record for STF 1523 AB
wds_id                       : 11182+3132
discoverer_code              : STF
discoverer_number            : 1523
discoverer_components        : AB
date_first                   : 1819
date_last                    : 2024
num_of_obs                   : 1670
pa_first                     : 285
pa_last                      : 137
sep_first                    : 2.6
sep_last                     : 3.3
mag_primary                  : 4.33
mag_secondary                : 4.8
spectral_type                : F9V+G9V
primary_proper_motion_RA     : -454
primary_proper_motion_DEC    : -591
secondary_proper_motion_RA   : -454
secondary_proper_motion_DEC  : -591
dm_number                    : +32 2132
notes                        : NO
precise_coordinate           : 111810.90+313145.0
                             : 11:18:10.90 +31:31:45.0

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
O: Orbit described in WDSNOT MEMO and has entry in Orbit Catalog


Orbital Elements for STF 1523 AB
WDS: STF 1523 AB WDS ID/Discoverer
P: 59.890 Orbital period (years)
a: 2.50442 Semi-major axis (arcseconds)
i: 122.187 Inclination (degrees)
Ω: 100.939 Longitude of ascending node (degrees)
T: 1935.170 Epoch of periastron passage (year)
e: 0.40432 Eccentricity
ω: 126.964 Argument of periastron (degrees)
Start-Year: 1995.055 Year
End-Year: 2054.945 Year
Epoch: 2026.31 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for STF 1523 AB
Position: 111810.90+313145.0 Epoch-2000 right ascension and declination
WDS-ID: 11182+3132 WDS designation
Discoverer Code: STF 1523 AB Discover designation and components
ADS number: 8119 Aitken Double Star catalog
HD number: 98231 HD catalog number
Hipparcos number: 55203 Hipparcos catalog number
V1: 4.33 Magnitude of the primary
V2: 4.80 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 1 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
8 = Interferometric
9 = Astrometric
Flags: n Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for STF 1523 AB



WDS 6th Orbit including measures of STF 1523 AB

-- 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 STF 1523 AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.31    2.691   132.80
--------------------------
1995.00    1.088   317.16
1995.10    1.107   315.63
1995.20    1.126   314.16
1995.30    1.145   312.73
1995.40    1.164   311.35
1995.50    1.183   310.02
1995.60    1.202   308.73
1995.70    1.222   307.48
1995.80    1.241   306.26
1995.90    1.260   305.09
1996.00    1.279   303.95
1996.10    1.298   302.84
1996.20    1.316   301.77
1996.30    1.335   300.72
1996.40    1.353   299.71
1996.50    1.371   298.72
1996.60    1.389   297.75
1996.70    1.406   296.81
1996.80    1.423   295.89
1996.90    1.440   295.00
1997.00    1.456   294.12
1997.10    1.472   293.26
1997.20    1.488   292.43
1997.30    1.503   291.60
1997.40    1.518   290.80
1997.50    1.533   290.01
1997.60    1.547   289.24
1997.70    1.561   288.48
1997.80    1.574   287.73
1997.90    1.588   286.99
1998.00    1.600   286.27
1998.10    1.612   285.56
1998.20    1.624   284.86
1998.30    1.636   284.17
1998.40    1.647   283.48
1998.50    1.657   282.81
1998.60    1.667   282.15
1998.70    1.677   281.49
1998.80    1.687   280.84
1998.90    1.696   280.20
1999.00    1.704   279.56
1999.10    1.713   278.93
1999.20    1.720   278.31
1999.30    1.728   277.69
1999.40    1.735   277.08
1999.50    1.742   276.47
1999.60    1.748   275.87
1999.70    1.754   275.27
1999.80    1.760   274.67
1999.90    1.765   274.08
2000.00    1.770   273.50
2000.10    1.775   272.91
2000.20    1.779   272.33
2000.30    1.783   271.75
2000.40    1.787   271.17
2000.50    1.790   270.60
2000.60    1.793   270.03
2000.70    1.796   269.46
2000.80    1.799   268.89
2000.90    1.801   268.32
2001.00    1.803   267.76
2001.10    1.805   267.19
2001.20    1.806   266.63
2001.30    1.807   266.07
2001.40    1.808   265.50
2001.50    1.809   264.94
2001.60    1.809   264.38
2001.70    1.809   263.82
2001.80    1.810   263.26
2001.90    1.809   262.70
2002.00    1.809   262.14
2002.10    1.808   261.57
2002.20    1.808   261.01
2002.30    1.807   260.45
2002.40    1.805   259.89
2002.50    1.804   259.32
2002.60    1.803   258.76
2002.70    1.801   258.19
2002.80    1.799   257.63
2002.90    1.797   257.06
2003.00    1.795   256.49
2003.10    1.793   255.92
2003.20    1.790   255.34
2003.30    1.788   254.77
2003.40    1.785   254.20
2003.50    1.783   253.62
2003.60    1.780   253.04
2003.70    1.777   252.46
2003.80    1.774   251.88
2003.90    1.771   251.29
2004.00    1.767   250.70
2004.10    1.764   250.11
2004.20    1.761   249.52
2004.30    1.757   248.93
2004.40    1.754   248.33
2004.50    1.750   247.74
2004.60    1.747   247.14
2004.70    1.743   246.53
2004.80    1.740   245.93
2004.90    1.736   245.32
2005.00    1.732   244.71
2005.10    1.728   244.09
2005.20    1.725   243.48
2005.30    1.721   242.86
2005.40    1.717   242.24
2005.50    1.713   241.61
2005.60    1.709   240.99
2005.70    1.706   240.36
2005.80    1.702   239.72
2005.90    1.698   239.09
2006.00    1.694   238.45
2006.10    1.691   237.81
2006.20    1.687   237.16
2006.30    1.683   236.52
2006.40    1.679   235.87
2006.50    1.676   235.21
2006.60    1.672   234.56
2006.70    1.669   233.90
2006.80    1.665   233.24
2006.90    1.662   232.58
2007.00    1.658   231.91
2007.10    1.655   231.24
2007.20    1.652   230.57
2007.30    1.649   229.89
2007.40    1.646   229.22
2007.50    1.643   228.54
2007.60    1.640   227.85
2007.70    1.637   227.17
2007.80    1.634   226.48
2007.90    1.631   225.79
2008.00    1.629   225.10
2008.10    1.626   224.41
2008.20    1.624   223.71
2008.30    1.621   223.02
2008.40    1.619   222.32
2008.50    1.617   221.61
2008.60    1.615   220.91
2008.70    1.613   220.21
2008.80    1.611   219.50
2008.90    1.609   218.79
2009.00    1.608   218.08
2009.10    1.606   217.37
2009.20    1.605   216.66
2009.30    1.604   215.94
2009.40    1.603   215.23
2009.50    1.602   214.51
2009.60    1.601   213.80
2009.70    1.600   213.08
2009.80    1.600   212.36
2009.90    1.599   211.64
2010.00    1.599   210.93
2010.10    1.599   210.21
2010.20    1.599   209.49
2010.30    1.599   208.77
2010.40    1.599   208.05
2010.50    1.600   207.33
2010.60    1.600   206.62
2010.70    1.601   205.90
2010.80    1.602   205.18
2010.90    1.602   204.47
2011.00    1.604   203.75
2011.10    1.605   203.04
2011.20    1.606   202.33
2011.30    1.608   201.61
2011.40    1.609   200.90
2011.50    1.611   200.20
2011.60    1.613   199.49
2011.70    1.615   198.78
2011.80    1.617   198.08
2011.90    1.620   197.38
2012.00    1.622   196.68
2012.10    1.625   195.98
2012.20    1.628   195.29
2012.30    1.631   194.60
2012.40    1.634   193.91
2012.50    1.637   193.22
2012.60    1.640   192.54
2012.70    1.644   191.86
2012.80    1.647   191.18
2012.90    1.651   190.50
2013.00    1.655   189.83
2013.10    1.659   189.16
2013.20    1.663   188.49
2013.30    1.667   187.83
2013.40    1.672   187.17
2013.50    1.676   186.52
2013.60    1.681   185.87
2013.70    1.686   185.22
2013.80    1.690   184.57
2013.90    1.695   183.93
2014.00    1.701   183.29
2014.10    1.706   182.66
2014.20    1.711   182.03
2014.30    1.717   181.41
2014.40    1.722   180.79
2014.50    1.728   180.17
2014.60    1.734   179.56
2014.70    1.740   178.95
2014.80    1.746   178.34
2014.90    1.752   177.74
2015.00    1.758   177.14
2015.10    1.764   176.55
2015.20    1.771   175.96
2015.30    1.777   175.38
2015.40    1.784   174.80
2015.50    1.791   174.23
2015.60    1.797   173.65
2015.70    1.804   173.09
2015.80    1.811   172.53
2015.90    1.818   171.97
2016.00    1.825   171.41
2016.10    1.832   170.87
2016.20    1.840   170.32
2016.30    1.847   169.78
2016.40    1.855   169.24
2016.50    1.862   168.71
2016.60    1.870   168.18
2016.70    1.877   167.66
2016.80    1.885   167.14
2016.90    1.893   166.63
2017.00    1.901   166.12
2017.10    1.908   165.61
2017.20    1.916   165.11
2017.30    1.924   164.61
2017.40    1.933   164.12
2017.50    1.941   163.63
2017.60    1.949   163.14
2017.70    1.957   162.66
2017.80    1.965   162.18
2017.90    1.974   161.71
2018.00    1.982   161.24
2018.10    1.990   160.77
2018.20    1.999   160.31
2018.30    2.007   159.85
2018.40    2.016   159.40
2018.50    2.024   158.95
2018.60    2.033   158.50
2018.70    2.042   158.06
2018.80    2.050   157.62
2018.90    2.059   157.19
2019.00    2.068   156.76
2019.10    2.077   156.33
2019.20    2.085   155.90
2019.30    2.094   155.48
2019.40    2.103   155.07
2019.50    2.112   154.65
2019.60    2.121   154.24
2019.70    2.129   153.83
2019.80    2.138   153.43
2019.90    2.147   153.03
2020.00    2.156   152.63
2020.10    2.165   152.24
2020.20    2.174   151.85
2020.30    2.183   151.46
2020.40    2.192   151.08
2020.50    2.201   150.70
2020.60    2.210   150.32
2020.70    2.219   149.95
2020.80    2.228   149.58
2020.90    2.237   149.21
2021.00    2.246   148.84
2021.10    2.255   148.48
2021.20    2.264   148.12
2021.30    2.273   147.76
2021.40    2.282   147.41
2021.50    2.291   147.06
2021.60    2.299   146.71
2021.70    2.308   146.36
2021.80    2.317   146.02
2021.90    2.326   145.68
2022.00    2.335   145.34
2022.10    2.344   145.00
2022.20    2.353   144.67
2022.30    2.362   144.34
2022.40    2.371   144.01
2022.50    2.379   143.69
2022.60    2.388   143.36
2022.70    2.397   143.04
2022.80    2.406   142.72
2022.90    2.414   142.41
2023.00    2.423   142.09
2023.10    2.432   141.78
2023.20    2.440   141.47
2023.30    2.449   141.16
2023.40    2.458   140.86
2023.50    2.466   140.56
2023.60    2.475   140.25
2023.70    2.483   139.96
2023.80    2.492   139.66
2023.90    2.500   139.36
2024.00    2.509   139.07
2024.10    2.517   138.78
2024.20    2.525   138.49
2024.30    2.534   138.20
2024.40    2.542   137.92
2024.50    2.550   137.64
2024.60    2.558   137.35
2024.70    2.566   137.07
2024.80    2.574   136.80
2024.90    2.583   136.52
2025.00    2.591   136.25
2025.10    2.599   135.97
2025.20    2.606   135.70
2025.30    2.614   135.43
2025.40    2.622   135.16
2025.50    2.630   134.90
2025.60    2.638   134.63
2025.70    2.645   134.37
2025.80    2.653   134.11
2025.90    2.661   133.85
2026.00    2.668   133.59
2026.10    2.676   133.33
2026.20    2.683   133.08
2026.30    2.690   132.82
2026.40    2.698   132.57
2026.50    2.705   132.32
2026.60    2.712   132.07
2026.70    2.719   131.82
2026.80    2.727   131.57
2026.90    2.734   131.32
2027.00    2.741   131.08
2027.10    2.748   130.83
2027.20    2.754   130.59
2027.30    2.761   130.35
2027.40    2.768   130.11
2027.50    2.775   129.87
2027.60    2.781   129.63
2027.70    2.788   129.40
2027.80    2.794   129.16
2027.90    2.801   128.92
2028.00    2.807   128.69
2028.10    2.813   128.46
2028.20    2.819   128.23
2028.30    2.826   128.00
2028.40    2.832   127.77
2028.50    2.838   127.54
2028.60    2.844   127.31
2028.70    2.850   127.08
2028.80    2.855   126.86
2028.90    2.861   126.63
2029.00    2.867   126.41
2029.10    2.872   126.19
2029.20    2.878   125.96
2029.30    2.883   125.74
2029.40    2.888   125.52
2029.50    2.894   125.30
2029.60    2.899   125.08
2029.70    2.904   124.87
2029.80    2.909   124.65
2029.90    2.914   124.43
2030.00    2.919   124.22
2030.10    2.924   124.00
2030.20    2.928   123.79
2030.30    2.933   123.57
2030.40    2.937   123.36
2030.50    2.942   123.15
2030.60    2.946   122.93
2030.70    2.951   122.72
2030.80    2.955   122.51
2030.90    2.959   122.30
2031.00    2.963   122.09
2031.10    2.967   121.88
2031.20    2.971   121.67
2031.30    2.974   121.47
2031.40    2.978   121.26
2031.50    2.982   121.05
2031.60    2.985   120.85
2031.70    2.988   120.64
2031.80    2.992   120.43
2031.90    2.995   120.23
2032.00    2.998   120.03
2032.10    3.001   119.82
2032.20    3.004   119.62
2032.30    3.007   119.41
2032.40    3.009   119.21
2032.50    3.012   119.01
2032.60    3.014   118.81
2032.70    3.017   118.60
2032.80    3.019   118.40
2032.90    3.021   118.20
2033.00    3.023   118.00
2033.10    3.025   117.80
2033.20    3.027   117.60
2033.30    3.029   117.40
2033.40    3.031   117.20
2033.50    3.032   117.00
2033.60    3.034   116.80
2033.70    3.035   116.60
2033.80    3.036   116.40
2033.90    3.037   116.20
2034.00    3.038   116.00
2034.10    3.039   115.80
2034.20    3.040   115.60
2034.30    3.041   115.40
2034.40    3.041   115.21
2034.50    3.042   115.01
2034.60    3.042   114.81
2034.70    3.042   114.61
2034.80    3.043   114.41
2034.90    3.042   114.21
2035.00    3.042   114.02
2035.10    3.042   113.82
2035.20    3.042   113.62
2035.30    3.041   113.42
2035.40    3.041   113.22
2035.50    3.040   113.02
2035.60    3.039   112.82
2035.70    3.038   112.62
2035.80    3.037   112.43
2035.90    3.036   112.23
2036.00    3.034   112.03
2036.10    3.033   111.83
2036.20    3.031   111.63
2036.30    3.030   111.43
2036.40    3.028   111.23
2036.50    3.026   111.03
2036.60    3.024   110.83
2036.70    3.021   110.63
2036.80    3.019   110.42
2036.90    3.016   110.22
2037.00    3.014   110.02
2037.10    3.011   109.82
2037.20    3.008   109.61
2037.30    3.005   109.41
2037.40    3.002   109.21
2037.50    2.998   109.00
2037.60    2.995   108.80
2037.70    2.991   108.59
2037.80    2.987   108.39
2037.90    2.983   108.18
2038.00    2.979   107.98
2038.10    2.975   107.77
2038.20    2.971   107.56
2038.30    2.966   107.35
2038.40    2.962   107.14
2038.50    2.957   106.93
2038.60    2.952   106.72
2038.70    2.947   106.51
2038.80    2.941   106.30
2038.90    2.936   106.09
2039.00    2.930   105.87
2039.10    2.925   105.66
2039.20    2.919   105.44
2039.30    2.913   105.23
2039.40    2.907   105.01
2039.50    2.900   104.79
2039.60    2.894   104.57
2039.70    2.887   104.35
2039.80    2.880   104.13
2039.90    2.873   103.91
2040.00    2.866   103.69
2040.10    2.859   103.46
2040.20    2.851   103.24
2040.30    2.844   103.01
2040.40    2.836   102.78
2040.50    2.828   102.56
2040.60    2.820   102.33
2040.70    2.811   102.09
2040.80    2.803   101.86
2040.90    2.794   101.63
2041.00    2.785   101.39
2041.10    2.776   101.15
2041.20    2.767   100.91
2041.30    2.758   100.67
2041.40    2.748   100.43
2041.50    2.738   100.19
2041.60    2.728    99.94
2041.70    2.718    99.69
2041.80    2.708    99.44
2041.90    2.697    99.19
2042.00    2.687    98.94
2042.10    2.676    98.68
2042.20    2.665    98.43
2042.30    2.654    98.17
2042.40    2.642    97.90
2042.50    2.631    97.64
2042.60    2.619    97.37
2042.70    2.607    97.10
2042.80    2.595    96.83
2042.90    2.582    96.56
2043.00    2.570    96.28
2043.10    2.557    96.00
2043.20    2.544    95.72
2043.30    2.531    95.43
2043.40    2.518    95.15
2043.50    2.504    94.85
2043.60    2.490    94.56
2043.70    2.476    94.26
2043.80    2.462    93.96
2043.90    2.448    93.66
2044.00    2.433    93.35
2044.10    2.419    93.04
2044.20    2.404    92.72
2044.30    2.389    92.40
2044.40    2.373    92.08
2044.50    2.358    91.75
2044.60    2.342    91.42
2044.70    2.326    91.08
2044.80    2.310    90.74
2044.90    2.293    90.39
2045.00    2.277    90.04
2045.10    2.260    89.68
2045.20    2.243    89.32
2045.30    2.226    88.95
2045.40    2.208    88.58
2045.50    2.191    88.20
2045.60    2.173    87.81
2045.70    2.155    87.42
2045.80    2.137    87.02
2045.90    2.118    86.61
2046.00    2.100    86.20
2046.10    2.081    85.78
2046.20    2.062    85.35
2046.30    2.043    84.92
2046.40    2.023    84.47
2046.50    2.004    84.02
2046.60    1.984    83.56
2046.70    1.964    83.09
2046.80    1.944    82.60
2046.90    1.923    82.11
2047.00    1.903    81.61
2047.10    1.882    81.10
2047.20    1.861    80.57
2047.30    1.840    80.04
2047.40    1.819    79.49
2047.50    1.797    78.93
2047.60    1.775    78.35
2047.70    1.754    77.76
2047.80    1.732    77.16
2047.90    1.710    76.54
2048.00    1.687    75.90
2048.10    1.665    75.24
2048.20    1.643    74.57
2048.30    1.620    73.88
2048.40    1.597    73.17
2048.50    1.575    72.44
2048.60    1.552    71.69
2048.70    1.529    70.92
2048.80    1.506    70.12
2048.90    1.483    69.30
2049.00    1.460    68.45
2049.10    1.436    67.57
2049.20    1.413    66.67
2049.30    1.390    65.73
2049.40    1.367    64.77
2049.50    1.344    63.77
2049.60    1.321    62.73
2049.70    1.298    61.66
2049.80    1.275    60.55
2049.90    1.252    59.40
2050.00    1.230    58.21
2050.10    1.208    56.97
2050.20    1.185    55.69
2050.30    1.164    54.35
2050.40    1.142    52.97
2050.50    1.121    51.54
2050.60    1.100    50.05
2050.70    1.080    48.50
2050.80    1.060    46.89
2050.90    1.040    45.23
2051.00    1.021    43.50
2051.10    1.003    41.70
2051.20    0.985    39.84
2051.30    0.968    37.92
2051.40    0.952    35.93
2051.50    0.937    33.87
2051.60    0.922    31.74
2051.70    0.909    29.55
2051.80    0.897    27.30
2051.90    0.885    24.98
2052.00    0.875    22.61
2052.10    0.866    20.18
2052.20    0.858    17.71
2052.30    0.852    15.20
2052.40    0.846    12.65
2052.50    0.842    10.07
2052.60    0.840     7.47
2052.70    0.838     4.86
2052.80    0.839     2.25
2052.90    0.840   359.64
2053.00    0.843   357.05
2053.10    0.847   354.47
2053.20    0.853   351.93
2053.30    0.859   349.42
2053.40    0.867   346.96
2053.50    0.876   344.54
2053.60    0.887   342.18
2053.70    0.898   339.87
2053.80    0.910   337.62
2053.90    0.923   335.43
2054.00    0.937   333.31
2054.10    0.952   331.25
2054.20    0.967   329.25
2054.30    0.983   327.32
2054.40    1.000   325.45
2054.50    1.017   323.64
2054.60    1.035   321.90
2054.70    1.053   320.21
2054.80    1.071   318.58
2054.90    1.090   317.01
2055.00    1.108   315.49




    Observation Date:  

Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2026. 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 makes use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Additionally, it incorporates data from the Washington Double Star Catalog, maintained at the U.S. Naval Observatory, and makes use of the Aladin Sky Atlas developed at CDS, Strasbourg Observatory, France. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.


Report Information
Double Star Calculator:   Version 1.2 ($Rev: 2591 $)
Report created:   2026-09-09 08:31:33 +0200


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