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

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	Longitude of periastron (degrees)
Start-Year:	1151.0	Year
End-Year:	2899.0	Year
Epoch:	2025.99	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
Flags:	n	Flags

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[°]
---------------------------------------------
2025.99    7.437    141.8
-------------------------
1151.0    11.787     78.4
1161.0    11.776     77.9
1171.0    11.763     77.4
1181.0    11.747     76.8
1191.0    11.728     76.3
1201.0    11.707     75.8
1211.0    11.682     75.3
1221.0    11.655     74.8
1231.0    11.624     74.3
1241.0    11.590     73.7
1251.0    11.553     73.2
1261.0    11.513     72.7
1271.0    11.469     72.1
1281.0    11.421     71.6
1291.0    11.370     71.0
1301.0    11.315     70.5
1311.0    11.255     69.9
1321.0    11.192     69.4
1331.0    11.123     68.8
1341.0    11.051     68.2
1351.0    10.973     67.6
1361.0    10.891     67.0
1371.0    10.803     66.4
1381.0    10.709     65.8
1391.0    10.610     65.2
1401.0    10.505     64.5
1411.0    10.393     63.9
1421.0    10.274     63.2
1431.0    10.148     62.6
1441.0    10.014     61.9
1451.0     9.872     61.1
1461.0     9.722     60.4
1471.0     9.562     59.6
1481.0     9.391     58.8
1491.0     9.210     58.0
1501.0     9.017     57.2
1511.0     8.811     56.3
1521.0     8.591     55.3
1531.0     8.356     54.3
1541.0     8.103     53.3
1551.0     7.831     52.2
1561.0     7.538     51.0
1571.0     7.220     49.7
1581.0     6.874     48.2
1591.0     6.495     46.6
1601.0     6.077     44.8
1611.0     5.612     42.8
1621.0     5.090     40.3
1631.0     4.496     37.2
1641.0     3.809     33.1
1651.0     3.001     26.9
1661.0     2.049     15.4
1671.0     1.064    342.0
1681.0     1.119    260.7
1691.0     2.056    229.7
1701.0     2.835    217.7
1711.0     3.410    210.4
1721.0     3.845    205.0
1731.0     4.188    200.6
1741.0     4.468    196.8
1751.0     4.703    193.4
1761.0     4.904    190.4
1771.0     5.080    187.5
1781.0     5.237    184.8
1791.0     5.378    182.3
1801.0     5.507    179.9
1811.0     5.627    177.6
1821.0     5.738    175.4
1831.0     5.844    173.3
1841.0     5.943    171.3
1851.0     6.039    169.3
1861.0     6.130    167.4
1871.0     6.219    165.5
1881.0     6.305    163.7
1891.0     6.390    161.9
1901.0     6.472    160.2
1911.0     6.553    158.5
1921.0     6.633    156.9
1931.0     6.712    155.3
1941.0     6.790    153.8
1951.0     6.867    152.2
1961.0     6.944    150.7
1971.0     7.021    149.3
1981.0     7.097    147.9
1991.0     7.173    146.5
2001.0     7.248    145.1
2011.0     7.324    143.8
2021.0     7.399    142.4
2031.0     7.475    141.2
2041.0     7.550    139.9
2051.0     7.625    138.7
2061.0     7.700    137.5
2071.0     7.775    136.3
2081.0     7.850    135.1
2091.0     7.924    134.0
2101.0     7.999    132.8
2111.0     8.074    131.7
2121.0     8.148    130.7
2131.0     8.222    129.6
2141.0     8.297    128.6
2151.0     8.371    127.5
2161.0     8.445    126.5
2171.0     8.518    125.6
2181.0     8.592    124.6
2191.0     8.665    123.6
2201.0     8.738    122.7
2211.0     8.811    121.8
2221.0     8.883    120.9
2231.0     8.956    120.0
2241.0     9.027    119.1
2251.0     9.099    118.2
2261.0     9.170    117.4
2271.0     9.241    116.5
2281.0     9.311    115.7
2291.0     9.380    114.9
2301.0     9.450    114.1
2311.0     9.519    113.3
2321.0     9.587    112.5
2331.0     9.654    111.8
2341.0     9.722    111.0
2351.0     9.788    110.3
2361.0     9.854    109.5
2371.0     9.919    108.8
2381.0     9.984    108.1
2391.0    10.048    107.4
2401.0    10.111    106.7
2411.0    10.173    106.0
2421.0    10.235    105.3
2431.0    10.296    104.6
2441.0    10.356    104.0
2451.0    10.415    103.3
2461.0    10.474    102.6
2471.0    10.531    102.0
2481.0    10.588    101.4
2491.0    10.644    100.7
2501.0    10.699    100.1
2511.0    10.752     99.5
2521.0    10.805     98.9
2531.0    10.857     98.3
2541.0    10.908     97.7
2551.0    10.957     97.1
2561.0    11.006     96.5
2571.0    11.053     95.9
2581.0    11.100     95.3
2591.0    11.145     94.8
2601.0    11.189     94.2
2611.0    11.232     93.6
2621.0    11.273     93.1
2631.0    11.313     92.5
2641.0    11.352     91.9
2651.0    11.390     91.4
2661.0    11.426     90.8
2671.0    11.460     90.3
2681.0    11.494     89.8
2691.0    11.526     89.2
2701.0    11.556     88.7
2711.0    11.585     88.2
2721.0    11.612     87.6
2731.0    11.637     87.1
2741.0    11.661     86.6
2751.0    11.684     86.1
2761.0    11.704     85.5
2771.0    11.723     85.0
2781.0    11.740     84.5
2791.0    11.755     84.0
2801.0    11.769     83.5
2811.0    11.780     83.0
2821.0    11.789     82.5
2831.0    11.797     82.0
2841.0    11.802     81.4
2851.0    11.805     80.9
2861.0    11.806     80.4
2871.0    11.805     79.9
2881.0    11.801     79.4
2891.0    11.795     78.9

Observation Date:

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 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.

Report Information

Double Star Calculator:		Version 1.0 ($Rev: 1734 $)
Report created:		2025-12-29 22:54:41 +0100