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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:30:37

Orbital Elements for HU149
WDS: HU149 WDS ID/Discoverer
P: 770.000 Orbital period (years)
a: 0.776 Semi-major axis (arcseconds)
i: 96.8 Inclination (degrees)
Ω: 90.7 Longitude of ascending node (degrees)
T: 1979.400 Epoch of periastron passage (year)
e: 0.17 Eccentricity
ω: 156.0 Longitude of periastron (degrees)
Start-Year: 1640.0 Year
End-Year: 2410.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU149
Position: 152435.30+541246.1 Epoch-2000 right ascension and declination
WDS-ID: 15246+5413 WDS designation
Discoverer Code: HU149 Discover designation and components
ADS number: 9628 Aitken Double Star catalog
HD number: 137588 HD catalog number
Hipparcos number: 75425 Hipparcos catalog number
V1: 7.48 Magnitude of the primary
V2: 7.62 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HU149
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:30:37 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 = [-0.8909319009054656, -0.89143467892069, -0.8918995334171622, -0.892326406702595, -0.8927152418197141, -0.8930659825499457, -0.8933785734172414, -0.893652959692043, -0.8938890873953846, -0.894086903303137, -0.8942463549503926, -0.8943673906359944, -0.8944499594272076, -0.8944940111645372, -0.8944994964666936, -0.8944663667357021, -0.8943945741503715, -0.8942840717119709, -0.8941348131983907, -0.8939467531988597, ...], y_list = [-0.026801720826695907, -0.02617332404090898, -0.025543813791233473, -0.024913215772573622, -0.024281555756149563, -0.02364885959026277, -0.023015153201065296, -0.02238046259333185, -0.021744813851236576, -0.02110823313913255, -0.020470746702335806, -0.019832380867911396, -0.01919316204546431, -0.018553116727932452, -0.017912271492383405, -0.017270653000813745, -0.016628287917779806, -0.01598520323440034, -0.01534142579772121, -0.014696982617446565, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.8909319009054656, -0.89143467892069, -0.8918995334171622, -0.892326406702595, -0.8927152418197141, -0.8930659825499457, -0.8933785734172414, -0.893652959692043, -0.8938890873953846, -0.894086903303137, -0.8942463549503926, -0.8943673906359944, -0.8944499594272076, -0.8944940111645372, -0.8944994964666936, -0.8944663667357021, -0.8943945741503715, -0.8942840717119709, -0.8941348131983907, -0.8939467531988597, ...], y_list=[-0.026801720826695907, -0.02617332404090898, -0.025543813791233473, -0.024913215772573622, -0.024281555756149563, -0.02364885959026277, -0.023015153201065296, -0.02238046259333185, -0.021744813851236576, -0.02110823313913255, -0.020470746702335806, -0.019832380867911396, -0.01919316204546431, -0.018553116727932452, -0.017912271492383405, -0.017270653000813745, -0.016628287917779806, -0.01598520323440034, -0.01534142579772121, -0.014696982617446565, ...])
    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([-0.87991136, -0.88096282, -0.88197471, -0...6, -0.8765192 , -0.87768957, -0.87882028]), y = array([-0.00040664, -0.0010587 , -0.00171072, -0...2, 0.00154956, 0.00089752, 0.00024545]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.87991136, -0.88096282, -0.88197471, -0...6, -0.8765192 , -0.87768957, -0.87882028]), array([-0.00040664, -0.0010587 , -0.00171072, -0...2, 0.00154956, 0.00089752, 0.00024545])], 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([-0.87991136, -0.88096282, -0.88197471, -0...6, -0.8765192 , -0.87768957, -0.87882028]), array([-0.00040664, -0.0010587 , -0.00171072, -0...2, 0.00154956, 0.00089752, 0.00024545])], 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([[-8.79911355e-01, -8.80962824e-01, -8.819...54955769e-03, 8.97523763e-04, -4.06636281e-04]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0.00000000e+00, 3.91370867e-04, 7.7214974... 9.98761272e-01, 9.99185064e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=777, 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([[-8.79911355e-01, -8.80962824e-01, -8.819...54955769e-03, 8.97523763e-04, -4.06636281e-04]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0.00000000e+00, 3.91370867e-04, 7.7214974... 9.98761272e-01, 9.99185064e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 777, 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>