☰Double Star Calculator - Results

WARNING: Invalid or missing GAIA IDs


Measurements for STF 982 AB

WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
06546+1311  STF 982     AB    1    7.63"    142.1°   B2025.169  HWI  120/900 APO   ASI678MM


WDS record for STF 982 AB
wds_id                       : 06546+1311
discoverer_code              : STF
discoverer_number            : 982
discoverer_components        : AB
date_first                   : 1781
date_last                    : 2023
num_of_obs                   : 311
pa_first                     : 180
pa_last                      : 142
sep_first                    : 7.8
sep_last                     : 7.4
mag_primary                  : 4.75
mag_secondary                : 7.8
spectral_type                : F0Vp
primary_proper_motion_RA     : 71
primary_proper_motion_DEC    : -80
secondary_proper_motion_RA   : 70
secondary_proper_motion_DEC  : -78
dm_number                    : +13 1462
notes                        : NO
precise_coordinate           : 065438.63+131040.1
                             : 06:54:38.63 +13:10:40.1

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 982 AB
WDS: STF 982 AB WDS ID/Discoverer
P: 1749.905 Orbital period (years)
a: 11.96064 Semi-major axis (arcseconds)
i: 116.481 Inclination (degrees)
Ω: 36.824 Longitude of ascending node (degrees)
T: 1678.603 Epoch of periastron passage (year)
e: 0.84082 Eccentricity
ω: 104.38 Argument of periastron (degrees)
Start-Year: 1150.048 Year
End-Year: 2899.952 Year
Epoch: 2016.0 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for STF 982 AB
Position: 065438.63+131040.1 Epoch-2000 right ascension and declination
WDS-ID: 06546+1311 WDS designation
Discoverer Code: STF 982 AB Discover designation and components
ADS number: 5559 Aitken Double Star catalog
HD number: 50635 HD catalog number
Hipparcos number: 33202 Hipparcos catalog number
V1: 4.75 Magnitude of the primary
V2: 7.80 Magnitude of the secondary
Equinox: Equinox
Date: 2014 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: Izm2019 Reference

Double Star Orbit for STF 982 AB



WDS 6th Orbit including measures of STF 982 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 982 AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2016.00    7.362   143.10
--------------------------
1150.00   11.788    78.44
1160.00   11.778    77.93
1170.00   11.764    77.41
1180.00   11.749    76.90
1190.00   11.730    76.38
1200.00   11.709    75.87
1210.00   11.685    75.35
1220.00   11.657    74.83
1230.00   11.627    74.30
1240.00   11.594    73.78
1250.00   11.557    73.25
1260.00   11.517    72.71
1270.00   11.473    72.17
1280.00   11.426    71.63
1290.00   11.375    71.09
1300.00   11.320    70.53
1310.00   11.261    69.98
1320.00   11.198    69.41
1330.00   11.130    68.84
1340.00   11.058    68.27
1350.00   10.981    67.68
1360.00   10.899    67.09
1370.00   10.812    66.49
1380.00   10.719    65.87
1390.00   10.620    65.25
1400.00   10.515    64.61
1410.00   10.404    63.96
1420.00   10.286    63.30
1430.00   10.161    62.62
1440.00   10.028    61.92
1450.00    9.887    61.21
1460.00    9.737    60.47
1470.00    9.578    59.71
1480.00    9.409    58.92
1490.00    9.229    58.10
1500.00    9.037    57.25
1510.00    8.833    56.36
1520.00    8.614    55.43
1530.00    8.380    54.44
1540.00    8.129    53.40
1550.00    7.860    52.29
1560.00    7.568    51.10
1570.00    7.253    49.80
1580.00    6.910    48.39
1590.00    6.534    46.81
1600.00    6.120    45.04
1610.00    5.661    42.99
1620.00    5.145    40.56
1630.00    4.559    37.54
1640.00    3.882    33.54
1650.00    3.088    27.65
1660.00    2.150    17.05
1670.00    1.147   347.86
1680.00    1.041   266.83
1690.00    1.965   231.43
1700.00    2.767   218.58
1710.00    3.359   211.01
1720.00    3.807   205.49
1730.00    4.157   201.01
1740.00    4.442   197.17
1750.00    4.681   193.76
1760.00    4.885   190.66
1770.00    5.063   187.79
1780.00    5.222   185.10
1790.00    5.365   182.57
1800.00    5.495   180.16
1810.00    5.615   177.86
1820.00    5.728   175.65
1830.00    5.833   173.52
1840.00    5.934   171.47
1850.00    6.029   169.49
1860.00    6.121   167.56
1870.00    6.210   165.69
1880.00    6.297   163.88
1890.00    6.381   162.11
1900.00    6.464   160.39
1910.00    6.545   158.71
1920.00    6.625   157.07
1930.00    6.704   155.47
1940.00    6.782   153.91
1950.00    6.860   152.38
1960.00    6.937   150.89
1970.00    7.013   149.43
1980.00    7.089   148.00
1990.00    7.165   146.60
2000.00    7.241   145.23
2010.00    7.316   143.89
2020.00    7.392   142.58
2030.00    7.467   141.29
2040.00    7.542   140.03
2050.00    7.617   138.79
2060.00    7.692   137.58
2070.00    7.767   136.39
2080.00    7.842   135.23
2090.00    7.917   134.08
2100.00    7.992   132.96
2110.00    8.066   131.86
2120.00    8.141   130.77
2130.00    8.215   129.71
2140.00    8.289   128.67
2150.00    8.363   127.64
2160.00    8.437   126.64
2170.00    8.511   125.65
2180.00    8.585   124.68
2190.00    8.658   123.72
2200.00    8.731   122.78
2210.00    8.804   121.86
2220.00    8.876   120.95
2230.00    8.948   120.05
2240.00    9.020   119.17
2250.00    9.092   118.31
2260.00    9.163   117.45
2270.00    9.233   116.61
2280.00    9.304   115.79
2290.00    9.374   114.97
2300.00    9.443   114.17
2310.00    9.512   113.38
2320.00    9.580   112.60
2330.00    9.648   111.83
2340.00    9.715   111.07
2350.00    9.781   110.33
2360.00    9.847   109.59
2370.00    9.913   108.86
2380.00    9.977   108.14
2390.00   10.041   107.43
2400.00   10.105   106.73
2410.00   10.167   106.04
2420.00   10.229   105.36
2430.00   10.290   104.68
2440.00   10.350   104.02
2450.00   10.410   103.36
2460.00   10.468   102.71
2470.00   10.526   102.06
2480.00   10.582   101.42
2490.00   10.638   100.79
2500.00   10.693   100.17
2510.00   10.747    99.55
2520.00   10.800    98.94
2530.00   10.852    98.33
2540.00   10.903    97.73
2550.00   10.952    97.14
2560.00   11.001    96.55
2570.00   11.049    95.96
2580.00   11.095    95.38
2590.00   11.140    94.81
2600.00   11.185    94.24
2610.00   11.227    93.67
2620.00   11.269    93.11
2630.00   11.309    92.55
2640.00   11.348    92.00
2650.00   11.386    91.45
2660.00   11.422    90.90
2670.00   11.457    90.36
2680.00   11.490    89.82
2690.00   11.522    89.28
2700.00   11.553    88.75
2710.00   11.582    88.22
2720.00   11.609    87.69
2730.00   11.635    87.17
2740.00   11.659    86.64
2750.00   11.682    86.12
2760.00   11.702    85.60
2770.00   11.721    85.08
2780.00   11.739    84.57
2790.00   11.754    84.05
2800.00   11.767    83.54
2810.00   11.779    83.03
2820.00   11.789    82.51
2830.00   11.796    82.00
2840.00   11.802    81.49
2850.00   11.805    80.98
2860.00   11.806    80.47
2870.00   11.805    79.96
2880.00   11.802    79.45
2890.00   11.796    78.94
2900.00   11.788    78.43




    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 08:48:51 +0200


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