Double Star Calculator - Orbit

Orbital Elements for STI2051A

WDS:	STI2051A	WDS ID/Discoverer
P:	23.000	Orbital period (years)
a:	0.07	Semi-major axis (arcseconds)
i:	65.0	Inclination (degrees)
Ω:	97.0	Longitude of ascending node (degrees)
T:	1966.000	Epoch of periastron passage (year)
e:	0.3	Eccentricity
ω:	73.0	Longitude of periastron (degrees)
Start-Year:	2013.5	Year
End-Year:	2036.5	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STI2051A
Position:	043111.52+585837.5	Epoch-2000 right ascension and declination
WDS-ID:	04312+5858	WDS designation
Discoverer Code:	STI2051A	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	21088	Hipparcos catalog number
V1:	11.1	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1977	Date of last observation
Orbit grade:	9	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Str1977	Reference

Double Star Orbit for STI2051A

WDS 6th Orbit including measures of STI2051A

-- 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 STI2051A

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.039    30.37
--------------------------
2013.50    0.031   236.95
2013.60    0.032   240.06
2013.70    0.034   242.87
2013.80    0.036   245.42
2013.90    0.037   247.74
2014.00    0.039   249.85
2014.10    0.041   251.80
2014.20    0.042   253.59
2014.30    0.044   255.25
2014.40    0.046   256.79
2014.50    0.047   258.22
2014.60    0.049   259.57
2014.70    0.050   260.84
2014.80    0.052   262.03
2014.90    0.053   263.16
2015.00    0.054   264.23
2015.10    0.056   265.25
2015.20    0.057   266.22
2015.30    0.058   267.16
2015.40    0.059   268.05
2015.50    0.060   268.91
2015.60    0.062   269.74
2015.70    0.063   270.55
2015.80    0.064   271.32
2015.90    0.064   272.08
2016.00    0.065   272.81
2016.10    0.066   273.52
2016.20    0.067   274.22
2016.30    0.068   274.90
2016.40    0.068   275.57
2016.50    0.069   276.22
2016.60    0.070   276.86
2016.70    0.070   277.50
2016.80    0.071   278.12
2016.90    0.071   278.73
2017.00    0.072   279.34
2017.10    0.072   279.93
2017.20    0.072   280.53
2017.30    0.073   281.11
2017.40    0.073   281.69
2017.50    0.073   282.27
2017.60    0.073   282.85
2017.70    0.074   283.42
2017.80    0.074   283.99
2017.90    0.074   284.56
2018.00    0.074   285.12
2018.10    0.074   285.69
2018.20    0.074   286.26
2018.30    0.074   286.82
2018.40    0.074   287.39
2018.50    0.074   287.96
2018.60    0.074   288.53
2018.70    0.073   289.10
2018.80    0.073   289.68
2018.90    0.073   290.26
2019.00    0.073   290.84
2019.10    0.072   291.43
2019.20    0.072   292.02
2019.30    0.072   292.62
2019.40    0.071   293.22
2019.50    0.071   293.83
2019.60    0.071   294.45
2019.70    0.070   295.07
2019.80    0.070   295.70
2019.90    0.069   296.34
2020.00    0.069   296.99
2020.10    0.068   297.65
2020.20    0.068   298.31
2020.30    0.067   298.99
2020.40    0.067   299.68
2020.50    0.066   300.38
2020.60    0.066   301.09
2020.70    0.065   301.82
2020.80    0.064   302.56
2020.90    0.064   303.32
2021.00    0.063   304.09
2021.10    0.062   304.87
2021.20    0.062   305.67
2021.30    0.061   306.50
2021.40    0.060   307.34
2021.50    0.060   308.19
2021.60    0.059   309.07
2021.70    0.058   309.97
2021.80    0.058   310.90
2021.90    0.057   311.84
2022.00    0.056   312.82
2022.10    0.055   313.81
2022.20    0.055   314.84
2022.30    0.054   315.89
2022.40    0.053   316.97
2022.50    0.052   318.08
2022.60    0.052   319.22
2022.70    0.051   320.40
2022.80    0.050   321.60
2022.90    0.049   322.85
2023.00    0.049   324.13
2023.10    0.048   325.45
2023.20    0.047   326.80
2023.30    0.047   328.20
2023.40    0.046   329.64
2023.50    0.045   331.12
2023.60    0.045   332.64
2023.70    0.044   334.20
2023.80    0.044   335.81
2023.90    0.043   337.47
2024.00    0.042   339.17
2024.10    0.042   340.91
2024.20    0.041   342.70
2024.30    0.041   344.53
2024.40    0.040   346.40
2024.50    0.040   348.31
2024.60    0.040   350.27
2024.70    0.039   352.26
2024.80    0.039   354.28
2024.90    0.039   356.34
2025.00    0.038   358.43
2025.10    0.038     0.54
2025.20    0.038     2.67
2025.30    0.038     4.83
2025.40    0.038     6.99
2025.50    0.038     9.16
2025.60    0.038    11.34
2025.70    0.038    13.52
2025.80    0.038    15.69
2025.90    0.038    17.85
2026.00    0.038    19.99
2026.10    0.038    22.12
2026.20    0.038    24.23
2026.30    0.039    26.30
2026.40    0.039    28.35
2026.50    0.039    30.37
2026.60    0.040    32.35
2026.70    0.040    34.29
2026.80    0.041    36.20
2026.90    0.041    38.06
2027.00    0.041    39.88
2027.10    0.042    41.66
2027.20    0.042    43.40
2027.30    0.043    45.10
2027.40    0.044    46.75
2027.50    0.044    48.36
2027.60    0.045    49.92
2027.70    0.045    51.45
2027.80    0.046    52.93
2027.90    0.047    54.38
2028.00    0.047    55.79
2028.10    0.048    57.16
2028.20    0.048    58.49
2028.30    0.049    59.79
2028.40    0.050    61.05
2028.50    0.050    62.29
2028.60    0.051    63.49
2028.70    0.052    64.66
2028.80    0.052    65.80
2028.90    0.053    66.92
2029.00    0.054    68.01
2029.10    0.054    69.08
2029.20    0.055    70.12
2029.30    0.055    71.15
2029.40    0.056    72.15
2029.50    0.056    73.13
2029.60    0.057    74.09
2029.70    0.057    75.04
2029.80    0.058    75.97
2029.90    0.058    76.88
2030.00    0.059    77.78
2030.10    0.059    78.67
2030.20    0.060    79.55
2030.30    0.060    80.41
2030.40    0.060    81.27
2030.50    0.061    82.12
2030.60    0.061    82.96
2030.70    0.061    83.79
2030.80    0.061    84.62
2030.90    0.061    85.44
2031.00    0.061    86.26
2031.10    0.062    87.08
2031.20    0.062    87.90
2031.30    0.062    88.71
2031.40    0.061    89.53
2031.50    0.061    90.35
2031.60    0.061    91.18
2031.70    0.061    92.01
2031.80    0.061    92.84
2031.90    0.060    93.69
2032.00    0.060    94.54
2032.10    0.059    95.41
2032.20    0.059    96.29
2032.30    0.058    97.19
2032.40    0.058    98.10
2032.50    0.057    99.04
2032.60    0.056   100.00
2032.70    0.056   100.98
2032.80    0.055   102.00
2032.90    0.054   103.05
2033.00    0.053   104.14
2033.10    0.052   105.27
2033.20    0.051   106.45
2033.30    0.049   107.68
2033.40    0.048   108.98
2033.50    0.047   110.35
2033.60    0.046   111.79
2033.70    0.044   113.33
2033.80    0.043   114.97
2033.90    0.041   116.73
2034.00    0.040   118.62
2034.10    0.038   120.67
2034.20    0.036   122.89
2034.30    0.035   125.32
2034.40    0.033   127.98
2034.50    0.032   130.91
2034.60    0.030   134.16
2034.70    0.029   137.75
2034.80    0.027   141.75
2034.90    0.026   146.19
2035.00    0.024   151.12
2035.10    0.023   156.55
2035.20    0.022   162.48
2035.30    0.022   168.87
2035.40    0.021   175.64
2035.50    0.021   182.64
2035.60    0.021   189.70
2035.70    0.021   196.65
2035.80    0.022   203.31
2035.90    0.023   209.56
2036.00    0.024   215.34
2036.10    0.025   220.60
2036.20    0.026   225.36
2036.30    0.028   229.65
2036.40    0.029   233.49

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 15:25:35