Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:22:31

Orbital Elements for STF1821AB
WDS: STF1821AB WDS ID/Discoverer
P: 10141.555 Orbital period (years)
a: 30.24041 Semi-major axis (arcseconds)
i: 93.267 Inclination (degrees)
Ω: 51.244 Longitude of ascending node (degrees)
T: 2902.040 Epoch of periastron passage (year)
e: 0.68651 Eccentricity
ω: 242.039 Longitude of periastron (degrees)
Start-Year: -3045.0 Year
End-Year: 7095.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1821AB
Position: 141329.00+514723.8 Epoch-2000 right ascension and declination
WDS-ID: 14135+5147 WDS designation
Discoverer Code: STF1821AB Discover designation and components
ADS number: 9173 Aitken Double Star catalog
HD number: 124675 HD catalog number
Hipparcos number: 69483 Hipparcos catalog number
V1: 4.53 Magnitude of the primary
V2: 6.62 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1821AB



WDS 6th Orbit including measures of STF1821AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of STF1821AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0    13.676    235.5
-------------------------
-3045.0    29.451     46.8
-2945.0    28.922     46.6
-2845.0    28.369     46.4
-2745.0    27.792     46.3
-2645.0    27.193     46.1
-2545.0    26.572     45.9
-2445.0    25.929     45.7
-2345.0    25.267     45.5
-2245.0    24.584     45.3
-2145.0    23.882     45.1
-2045.0    23.161     44.8
-1945.0    22.422     44.6
-1845.0    21.666     44.3
-1745.0    20.892     44.0
-1645.0    20.103     43.7
-1545.0    19.297     43.3
-1445.0    18.476     42.9
-1345.0    17.641     42.5
-1245.0    16.792     42.1
-1145.0    15.929     41.6
-1045.0    15.054     41.0
-945.0    14.168     40.4
-845.0    13.270     39.7
-745.0    12.362     38.8
-645.0    11.446     37.9
-545.0    10.522     36.8
-445.0     9.592     35.4
-345.0     8.658     33.8
-245.0     7.724     31.8
-145.0     6.793     29.2
-45.0      5.873     25.9
55.0       4.973     21.3
155.0      4.113     14.7
255.0      3.330      4.8
355.0      2.696    349.6
455.0      2.343    327.8
555.0      2.398    303.1
655.0      2.837    283.0
755.0      3.518    269.4
855.0      4.323    260.5
955.0      5.190    254.5
1055.0     6.085    250.2
1155.0     6.991    247.0
1255.0     7.895    244.6
1355.0     8.786    242.7
1455.0     9.656    241.1
1555.0    10.496    239.8
1655.0    11.296    238.6
1755.0    12.044    237.6
1855.0    12.725    236.8
1955.0    13.321    236.0
2055.0    13.809    235.2
2155.0    14.156    234.6
2255.0    14.320    233.9
2355.0    14.241    233.2
2455.0    13.835    232.6
2555.0    12.984    231.8
2655.0    11.530    230.9
2755.0     9.299    229.7
2855.0     6.195    227.4
2955.0     2.406    218.5
3055.0     1.865     69.4
3155.0     5.772     57.0
3255.0     9.361     54.5
3355.0    12.539     53.4
3455.0    15.327     52.7
3555.0    17.773     52.2
3655.0    19.922     51.8
3755.0    21.816     51.5
3855.0    23.490     51.3
3955.0    24.971     51.0
4055.0    26.283     50.8
4155.0    27.445     50.6
4255.0    28.473     50.5
4355.0    29.381     50.3
4455.0    30.180     50.2
4555.0    30.879     50.0
4655.0    31.487     49.9
4755.0    32.012     49.7
4855.0    32.459     49.6
4955.0    32.834     49.5
5055.0    33.142     49.4
5155.0    33.387     49.2
5255.0    33.573     49.1
5355.0    33.704     49.0
5455.0    33.783     48.9
5555.0    33.812     48.8
5655.0    33.795     48.6
5755.0    33.733     48.5
5855.0    33.628     48.4
5955.0    33.484     48.3
6055.0    33.301     48.2
6155.0    33.080     48.0
6255.0    32.825     47.9
6355.0    32.536     47.8
6455.0    32.214     47.7
6555.0    31.861     47.5
6655.0    31.477     47.4
6755.0    31.065     47.3
6855.0    30.625     47.1
6955.0    30.157     47.0
7055.0    29.663     46.8






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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