☰Double Star Calculator - Results

WARNING: Invalid or missing GAIA IDs


Measurements for STF 2140 AB
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
17146+1423  STF 2140    AB    1    4.78"    101.6°   B2022.483  HWI  120/900 APO   ASI120MC 
17146+1423  STF 2140    AB    1    4.80"    100.5°   B2025.468  HWI  120/900 APO   ASI678MM 
17146+1423  STF 2140    AB    3    4.80"    101.8°   B2026.483  HWI  120/900 APO   ASI678MM

-- Image of STF-2140-AB-taken with Equinox 120/900 APO --


WDS record for STF 2140 AB
wds_id                       : 17146+1423
discoverer_code              : STF
discoverer_number            : 2140
discoverer_components        : AB
date_first                   : 1779
date_last                    : 2023
num_of_obs                   : 513
pa_first                     : 112
pa_last                      : 102
sep_first                    : 4.8
sep_last                     : 4.8
mag_primary                  : 3.48
mag_secondary                : 5.4
spectral_type                : M5Ib-II
primary_proper_motion_RA     : -17
primary_proper_motion_DEC    : 47
secondary_proper_motion_RA   : -7
secondary_proper_motion_DEC  : 33
dm_number                    : 
notes                        : NO
precise_coordinate           : 171438.86+142324.9
                             : 17:14:38.86 +14:23:24.9

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 2140 AB
WDS: STF 2140 AB WDS ID/Discoverer
P: 3600.000 Orbital period (years)
a: 4.68 Semi-major axis (arcseconds)
i: 155.8 Inclination (degrees)
Ω: 119.6 Longitude of ascending node (degrees)
T: 1835.000 Epoch of periastron passage (year)
e: 0.0 Eccentricity
ω: 0.0 Longitude of periastron (degrees)
Start-Year: 225.0 Year
End-Year: 3825.0 Year
Epoch: 2016.0 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for STF 2140 AB
Position: 171438.86+142324.9 Epoch-2000 right ascension and declination
WDS-ID: 17146+1423 WDS designation
Discoverer Code: STF 2140 AB Discover designation and components
ADS number: 10418 Aitken Double Star catalog
HD number: 156014 HD catalog number
Hipparcos number: 84345 Hipparcos catalog number
V1: 3.48 Magnitude of the primary
V2: 5.40 Magnitude of the secondary
Equinox: Equinox
Date: 1970 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
8 = Interferometric
9 = Astrometric
Flags: n Flags
Ephemerides: Ephemerides
Code: Baz1978 Reference

Double Star Orbit for STF 2140 AB



WDS 6th Orbit including measures of STF 2140 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 2140 AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2016.00    4.642   103.00
--------------------------
220.00    4.640   282.63
230.00    4.636   281.70
240.00    4.632   280.77
250.00    4.627   279.84
260.00    4.622   278.90
270.00    4.617   277.97
280.00    4.612   277.03
290.00    4.607   276.09
300.00    4.601   275.15
310.00    4.595   274.20
320.00    4.590   273.25
330.00    4.584   272.30
340.00    4.578   271.35
350.00    4.571   270.40
360.00    4.565   269.44
370.00    4.559   268.48
380.00    4.552   267.52
390.00    4.545   266.55
400.00    4.539   265.58
410.00    4.532   264.61
420.00    4.525   263.64
430.00    4.518   262.66
440.00    4.511   261.68
450.00    4.504   260.70
460.00    4.497   259.71
470.00    4.490   258.72
480.00    4.483   257.73
490.00    4.475   256.73
500.00    4.468   255.73
510.00    4.461   254.73
520.00    4.454   253.73
530.00    4.447   252.72
540.00    4.440   251.71
550.00    4.433   250.69
560.00    4.426   249.67
570.00    4.419   248.65
580.00    4.412   247.63
590.00    4.405   246.60
600.00    4.398   245.57
610.00    4.391   244.53
620.00    4.385   243.49
630.00    4.378   242.45
640.00    4.372   241.41
650.00    4.366   240.36
660.00    4.360   239.31
670.00    4.354   238.26
680.00    4.348   237.21
690.00    4.342   236.15
700.00    4.337   235.09
710.00    4.331   234.02
720.00    4.326   232.96
730.00    4.321   231.89
740.00    4.316   230.82
750.00    4.312   229.74
760.00    4.308   228.67
770.00    4.303   227.59
780.00    4.299   226.51
790.00    4.296   225.43
800.00    4.292   224.35
810.00    4.289   223.26
820.00    4.286   222.17
830.00    4.283   221.09
840.00    4.280   220.00
850.00    4.278   218.91
860.00    4.276   217.81
870.00    4.274   216.72
880.00    4.273   215.63
890.00    4.271   214.53
900.00    4.270   213.44
910.00    4.270   212.34
920.00    4.269   211.24
930.00    4.269   210.15
940.00    4.269   209.05
950.00    4.269   207.96
960.00    4.270   206.86
970.00    4.270   205.76
980.00    4.271   204.67
990.00    4.273   203.57
1000.00    4.274   202.48
1010.00    4.276   201.39
1020.00    4.278   200.29
1030.00    4.280   199.20
1040.00    4.283   198.11
1050.00    4.286   197.03
1060.00    4.289   195.94
1070.00    4.292   194.85
1080.00    4.296   193.77
1090.00    4.299   192.69
1100.00    4.303   191.61
1110.00    4.308   190.53
1120.00    4.312   189.46
1130.00    4.316   188.38
1140.00    4.321   187.31
1150.00    4.326   186.24
1160.00    4.331   185.18
1170.00    4.337   184.11
1180.00    4.342   183.05
1190.00    4.348   181.99
1200.00    4.354   180.94
1210.00    4.360   179.89
1220.00    4.366   178.84
1230.00    4.372   177.79
1240.00    4.378   176.75
1250.00    4.385   175.71
1260.00    4.391   174.67
1270.00    4.398   173.63
1280.00    4.405   172.60
1290.00    4.412   171.57
1300.00    4.419   170.55
1310.00    4.426   169.53
1320.00    4.433   168.51
1330.00    4.440   167.49
1340.00    4.447   166.48
1350.00    4.454   165.47
1360.00    4.461   164.47
1370.00    4.468   163.47
1380.00    4.475   162.47
1390.00    4.483   161.47
1400.00    4.490   160.48
1410.00    4.497   159.49
1420.00    4.504   158.50
1430.00    4.511   157.52
1440.00    4.518   156.54
1450.00    4.525   155.56
1460.00    4.532   154.59
1470.00    4.539   153.62
1480.00    4.545   152.65
1490.00    4.552   151.68
1500.00    4.559   150.72
1510.00    4.565   149.76
1520.00    4.571   148.80
1530.00    4.578   147.85
1540.00    4.584   146.90
1550.00    4.590   145.95
1560.00    4.595   145.00
1570.00    4.601   144.05
1580.00    4.607   143.11
1590.00    4.612   142.17
1600.00    4.617   141.23
1610.00    4.622   140.30
1620.00    4.627   139.36
1630.00    4.632   138.43
1640.00    4.636   137.50
1650.00    4.640   136.57
1660.00    4.644   135.64
1670.00    4.648   134.72
1680.00    4.652   133.80
1690.00    4.655   132.87
1700.00    4.659   131.95
1710.00    4.662   131.03
1720.00    4.664   130.11
1730.00    4.667   129.20
1740.00    4.669   128.28
1750.00    4.671   127.36
1760.00    4.673   126.45
1770.00    4.675   125.53
1780.00    4.676   124.62
1790.00    4.678   123.71
1800.00    4.679   122.79
1810.00    4.679   121.88
1820.00    4.680   120.97
1830.00    4.680   120.06
1840.00    4.680   119.14
1850.00    4.680   118.23
1860.00    4.679   117.32
1870.00    4.679   116.41
1880.00    4.678   115.49
1890.00    4.676   114.58
1900.00    4.675   113.67
1910.00    4.673   112.75
1920.00    4.671   111.84
1930.00    4.669   110.92
1940.00    4.667   110.00
1950.00    4.664   109.09
1960.00    4.662   108.17
1970.00    4.659   107.25
1980.00    4.655   106.33
1990.00    4.652   105.40
2000.00    4.648   104.48
2010.00    4.644   103.56
2020.00    4.640   102.63
2030.00    4.636   101.70
2040.00    4.632   100.77
2050.00    4.627    99.84
2060.00    4.622    98.90
2070.00    4.617    97.97
2080.00    4.612    97.03
2090.00    4.607    96.09
2100.00    4.601    95.15
2110.00    4.595    94.20
2120.00    4.590    93.25
2130.00    4.584    92.30
2140.00    4.578    91.35
2150.00    4.571    90.40
2160.00    4.565    89.44
2170.00    4.559    88.48
2180.00    4.552    87.52
2190.00    4.545    86.55
2200.00    4.539    85.58
2210.00    4.532    84.61
2220.00    4.525    83.64
2230.00    4.518    82.66
2240.00    4.511    81.68
2250.00    4.504    80.70
2260.00    4.497    79.71
2270.00    4.490    78.72
2280.00    4.483    77.73
2290.00    4.475    76.73
2300.00    4.468    75.73
2310.00    4.461    74.73
2320.00    4.454    73.73
2330.00    4.447    72.72
2340.00    4.440    71.71
2350.00    4.433    70.69
2360.00    4.426    69.67
2370.00    4.419    68.65
2380.00    4.412    67.63
2390.00    4.405    66.60
2400.00    4.398    65.57
2410.00    4.391    64.53
2420.00    4.385    63.49
2430.00    4.378    62.45
2440.00    4.372    61.41
2450.00    4.366    60.36
2460.00    4.360    59.31
2470.00    4.354    58.26
2480.00    4.348    57.21
2490.00    4.342    56.15
2500.00    4.337    55.09
2510.00    4.331    54.02
2520.00    4.326    52.96
2530.00    4.321    51.89
2540.00    4.316    50.82
2550.00    4.312    49.74
2560.00    4.308    48.67
2570.00    4.303    47.59
2580.00    4.299    46.51
2590.00    4.296    45.43
2600.00    4.292    44.35
2610.00    4.289    43.26
2620.00    4.286    42.17
2630.00    4.283    41.09
2640.00    4.280    40.00
2650.00    4.278    38.91
2660.00    4.276    37.81
2670.00    4.274    36.72
2680.00    4.273    35.63
2690.00    4.271    34.53
2700.00    4.270    33.44
2710.00    4.270    32.34
2720.00    4.269    31.24
2730.00    4.269    30.15
2740.00    4.269    29.05
2750.00    4.269    27.96
2760.00    4.270    26.86
2770.00    4.270    25.76
2780.00    4.271    24.67
2790.00    4.273    23.57
2800.00    4.274    22.48
2810.00    4.276    21.39
2820.00    4.278    20.29
2830.00    4.280    19.20
2840.00    4.283    18.11
2850.00    4.286    17.03
2860.00    4.289    15.94
2870.00    4.292    14.85
2880.00    4.296    13.77
2890.00    4.299    12.69
2900.00    4.303    11.61
2910.00    4.308    10.53
2920.00    4.312     9.46
2930.00    4.316     8.38
2940.00    4.321     7.31
2950.00    4.326     6.24
2960.00    4.331     5.18
2970.00    4.337     4.11
2980.00    4.342     3.05
2990.00    4.348     1.99
3000.00    4.354     0.94
3010.00    4.360   359.89
3020.00    4.366   358.84
3030.00    4.372   357.79
3040.00    4.378   356.75
3050.00    4.385   355.71
3060.00    4.391   354.67
3070.00    4.398   353.63
3080.00    4.405   352.60
3090.00    4.412   351.57
3100.00    4.419   350.55
3110.00    4.426   349.53
3120.00    4.433   348.51
3130.00    4.440   347.49
3140.00    4.447   346.48
3150.00    4.454   345.47
3160.00    4.461   344.47
3170.00    4.468   343.47
3180.00    4.475   342.47
3190.00    4.483   341.47
3200.00    4.490   340.48
3210.00    4.497   339.49
3220.00    4.504   338.50
3230.00    4.511   337.52
3240.00    4.518   336.54
3250.00    4.525   335.56
3260.00    4.532   334.59
3270.00    4.539   333.62
3280.00    4.545   332.65
3290.00    4.552   331.68
3300.00    4.559   330.72
3310.00    4.565   329.76
3320.00    4.571   328.80
3330.00    4.578   327.85
3340.00    4.584   326.90
3350.00    4.590   325.95
3360.00    4.595   325.00
3370.00    4.601   324.05
3380.00    4.607   323.11
3390.00    4.612   322.17
3400.00    4.617   321.23
3410.00    4.622   320.30
3420.00    4.627   319.36
3430.00    4.632   318.43
3440.00    4.636   317.50
3450.00    4.640   316.57
3460.00    4.644   315.64
3470.00    4.648   314.72
3480.00    4.652   313.80
3490.00    4.655   312.87
3500.00    4.659   311.95
3510.00    4.662   311.03
3520.00    4.664   310.11
3530.00    4.667   309.20
3540.00    4.669   308.28
3550.00    4.671   307.36
3560.00    4.673   306.45
3570.00    4.675   305.53
3580.00    4.676   304.62
3590.00    4.678   303.71
3600.00    4.679   302.79
3610.00    4.679   301.88
3620.00    4.680   300.97
3630.00    4.680   300.06
3640.00    4.680   299.14
3650.00    4.680   298.23
3660.00    4.679   297.32
3670.00    4.679   296.41
3680.00    4.678   295.49
3690.00    4.676   294.58
3700.00    4.675   293.67
3710.00    4.673   292.75
3720.00    4.671   291.84
3730.00    4.669   290.92
3740.00    4.667   290.00
3750.00    4.664   289.09
3760.00    4.662   288.17
3770.00    4.659   287.25
3780.00    4.655   286.33
3790.00    4.652   285.40
3800.00    4.648   284.48
3810.00    4.644   283.56
3820.00    4.640   282.63
3830.00    4.636   281.70




    Observation Date:  

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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.


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Report created:   2026-07-17 15:55:49 +0200


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