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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:05:35

Orbital Elements for I885AB
WDS: I885AB WDS ID/Discoverer
P: 650.000 Orbital period (years)
a: 1.69 Semi-major axis (arcseconds)
i: 100.8 Inclination (degrees)
Ω: 8.4 Longitude of ascending node (degrees)
T: 2520.000 Epoch of periastron passage (year)
e: 0.589 Eccentricity
ω: 118.5 Longitude of periastron (degrees)
Start-Year: 1700.0 Year
End-Year: 2350.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I885AB
Position: 112837.32-450827.4 Epoch-2000 right ascension and declination
WDS-ID: 11286-4508 WDS designation
Discoverer Code: I885AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 99804 HD catalog number
Hipparcos number: 56004 Hipparcos catalog number
V1: 7.98 Magnitude of the primary
V2: 9.90 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1995 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for I885AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:05:35 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 = [-0.48922122044231026, -0.4869960724746897, -0.484750847770093, -0.48248546986276314, -0.4801998615262395, -0.47789394476894703, -0.4755676408299274, -0.47322087017473513, -0.47085355249150274, -0.4684656066871974, -0.46605695088408183, -0.46362750241639844, -0.46117717782729173, -0.45870589286599356, -0.4562135624852854, -0.45370010083926643, -0.4511654212814434, -0.4486094363631738, -0.4460320578324833, -0.4434331966332863, ...], y_list = [1.8691553630342794, 1.8691993609025186, 1.869166299289673, 1.8690555277918788, 1.8688663870006124, 1.8685982083282435, 1.8682503138295272, 1.867822016018923, 1.86731261768364, 1.866721411692261, 1.866047680798874, 1.8652906974425405, 1.8644497235420137, 1.863524010285554, 1.8625127979157154, 1.8614153155089679, 1.860230780750016, 1.8589583997006616, 1.857597366563081, 1.8561468634373344, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.48922122044231026, -0.4869960724746897, -0.484750847770093, -0.48248546986276314, -0.4801998615262395, -0.47789394476894703, -0.4755676408299274, -0.47322087017473513, -0.47085355249150274, -0.4684656066871974, -0.46605695088408183, -0.46362750241639844, -0.46117717782729173, -0.45870589286599356, -0.4562135624852854, -0.45370010083926643, -0.4511654212814434, -0.4486094363631738, -0.4460320578324833, -0.4434331966332863, ...], y_list=[1.8691553630342794, 1.8691993609025186, 1.869166299289673, 1.8690555277918788, 1.8688663870006124, 1.8685982083282435, 1.8682503138295272, 1.867822016018923, 1.86731261768364, 1.866721411692261, 1.866047680798874, 1.8652906974425405, 1.8644497235420137, 1.863524010285554, 1.8625127979157154, 1.8614153155089679, 1.860230780750016, 1.8589583997006616, 1.857597366563081, 1.8561468634373344, ...])
    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([-0.43998662, -0.43760488, -0.43520731, -0...9, -0.44703712, -0.44470272, -0.44235256]), y = array([-5.89674585e-04, -1.00883065e-02, -1.9586....79049993e-02, 1.84073150e-02, 8.90897893e-03]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.43998662, -0.43760488, -0.43520731, -0...9, -0.44703712, -0.44470272, -0.44235256]), array([-5.89674585e-04, -1.00883065e-02, -1.9586....79049993e-02, 1.84073150e-02, 8.90897893e-03])], 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([-0.43998662, -0.43760488, -0.43520731, -0...9, -0.44703712, -0.44470272, -0.44235256]), array([-5.89674585e-04, -1.00883065e-02, -1.9586....79049993e-02, 1.84073150e-02, 8.90897893e-03])], 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([[-0.43998662, -0.43760488, -0.43520731, .... 0.027905 , 0.01840732, -0.00058967]]), 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. , 0.0016064 , 0.00321337, 0.004...8114, 0.99518475, 0.99678913, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=657, 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([[-0.43998662, -0.43760488, -0.43520731, .... 0.027905 , 0.01840732, -0.00058967]]), 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. , 0.0016064 , 0.00321337, 0.004...8114, 0.99518475, 0.99678913, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 657, 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>