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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:55:10

Orbital Elements for STF1394
WDS: STF1394 WDS ID/Discoverer
P: 2848.000 Orbital period (years)
a: 3.53 Semi-major axis (arcseconds)
i: 45.0 Inclination (degrees)
Ω: 78.0 Longitude of ascending node (degrees)
T: 1163.000 Epoch of periastron passage (year)
e: 0.46 Eccentricity
ω: 21.0 Longitude of periastron (degrees)
Start-Year: 601.0 Year
End-Year: 3449.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1394
Position: 095714.57+455410.1 Epoch-2000 right ascension and declination
WDS-ID: 09572+4554 WDS designation
Discoverer Code: STF1394 Discover designation and components
ADS number: 7588 Aitken Double Star catalog
HD number: 86057 HD catalog number
Hipparcos number: 48804 Hipparcos catalog number
V1: 8.89 Magnitude of the primary
V2: 9.75 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STF1394
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:55:10 2025

A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.

 /var/www/cgi-bin/ds_orbit.py in <module>
    891 
    892 # Smooth curve if necessary
=>  893 x_smooth, y_smooth = Q_get_smoothed_orbit(x_list, y_list)
    894 plt.plot(x_smooth, y_smooth, label=f'Orbit of {wds}', color='#528B8B')
    895 
x_smooth undefined, y_smooth undefined, Q_get_smoothed_orbit = <function Q_get_smoothed_orbit>, x_list = [1.3317429594676904, 1.324509054911545, 1.3172696853130736, 1.3100248657982028, 1.3027746116073813, 1.2955189380964096, 1.2882578607373518, 1.2809913951194096, 1.273719556949815, 1.2664423620547516, 1.25915982638024, 1.2518719659930893, 1.2445787970817932, 1.2372803359574598, 1.2299765990547835, 1.2226676029329566, 1.2153533642766519, 1.2080338998969573, 1.200709226732373, 1.1933793618497717, ...], y_list = [2.3507463607709718, 2.350937977399559, 2.3511198938244005, 2.351292082978309, 2.351454517704412, 2.3516071707558397, 2.3517500147953854, 2.3518830223951888, 2.3520061660364053, 2.352119418108879, 2.352222750910815, 2.3523161366484486, 2.35239954743572, 2.3524729552939427, 2.3525363321514763, 2.352589649843391, 2.352632880111145, 2.3526659946022477, 2.35268896486993, 2.352701762372814, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.3317429594676904, 1.324509054911545, 1.3172696853130736, 1.3100248657982028, 1.3027746116073813, 1.2955189380964096, 1.2882578607373518, 1.2809913951194096, 1.273719556949815, 1.2664423620547516, 1.25915982638024, 1.2518719659930893, 1.2445787970817932, 1.2372803359574598, 1.2299765990547835, 1.2226676029329566, 1.2153533642766519, 1.2080338998969573, 1.200709226732373, 1.1933793618497717, ...], y_list=[2.3507463607709718, 2.350937977399559, 2.3511198938244005, 2.351292082978309, 2.351454517704412, 2.3516071707558397, 2.3517500147953854, 2.3518830223951888, 2.3520061660364053, 2.352119418108879, 2.352222750910815, 2.3523161366484486, 2.35239954743572, 2.3524729552939427, 2.3525363321514763, 2.352589649843391, 2.352632880111145, 2.3526659946022477, 2.35268896486993, 2.352701762372814, ...])
    272     # Nur wenn ausreichend Punkte vorhanden sind
    273     if len(x) >= 4:
=>  274         tck, u = splprep([x, y], s=0.0, per=True) # per=True für geschlossene Kurve (Orbit)
    275         u_fine = np.linspace(0, 1, 300)           # Feinere Parameterwerte
    276         return splev(u_fine, tck)
tck undefined, u undefined, splprep = <function splprep>, x = array([-1.86771642, -1.8655866 , -1.86339923, ..., -1.87376027, -1.87180329, -1.86978867]), y = array([-0.00090721, -0.01014751, -0.01938749, ..., 0.0268127 , 0.01757318, 0.00833311]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.86771642, -1.8655866 , -1.86339923, ..., -1.87376027, -1.87180329, -1.86978867]), array([-0.00090721, -0.01014751, -0.01938749, ..., 0.0268127 , 0.01757318, 0.00833311])], w=None, u=None, ub=None, ue=None, k=3, task=0, s=0.0, t=None, full_output=0, nest=None, per=True, quiet=1)
    153     """
    154 
=>  155     res = _impl.splprep(x, w, u, ub, ue, k, task, s, t, full_output, nest, per,
=>  156                         quiet)
    157     return res
res undefined, global _impl = <module 'scipy.interpolate._fitpack_impl' from '...ist-packages/scipy/interpolate/_fitpack_impl.py'>, _impl.splprep = <function splprep>, x = [array([-1.86771642, -1.8655866 , -1.86339923, ..., -1.87376027, -1.87180329, -1.86978867]), array([-0.00090721, -0.01014751, -0.01938749, ..., 0.0268127 , 0.01757318, 0.00833311])], w = None, u = None, ub = None, ue = None, k = 3, task = 0, s = 0.0, t = None, full_output = 0, nest = None, per = True, quiet = 1
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_impl.py in splprep(x=array([[-1.86771642e+00, -1.86558660e+00, -1.863...68127022e-02, 1.75731776e-02, -9.07210651e-04]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 5.20443607e-04, 1.0415889... 9.98442858e-01, 9.98961212e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=2855, per=True, quiet=1)
    172     wrk = _parcur_cache['wrk']
    173     iwrk = _parcur_cache['iwrk']
=>  174     t, c, o = _fitpack._parcur(ravel(transpose(x)), w, u, ub, ue, k,
=>  175                                task, ipar, s, t, nest, wrk, iwrk, per)
    176     _parcur_cache['u'] = o['u']
t = array([], dtype=float64), c undefined, o undefined, global _fitpack = <module 'scipy.interpolate._fitpack' from '/usr/...polate/_fitpack.cpython-312-x86_64-linux-gnu.so'>, _fitpack._parcur = <built-in function _parcur>, global ravel = <function ravel>, global transpose = <function transpose>, x = array([[-1.86771642e+00, -1.86558660e+00, -1.863...68127022e-02, 1.75731776e-02, -9.07210651e-04]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 5.20443607e-04, 1.0415889... 9.98442858e-01, 9.98961212e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 2855, wrk = array([], dtype=float64), iwrk = array([], dtype=int32), per = True

ValueError: Invalid inputs.
      add_note = <built-in method add_note of ValueError object>
      args = ('Invalid inputs.',)
      with_traceback = <built-in method with_traceback of ValueError object>