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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:45:30

Orbital Elements for HDO269
WDS: HDO269 WDS ID/Discoverer
P: 1700.000 Orbital period (years)
a: 0.806 Semi-major axis (arcseconds)
i: 72.4 Inclination (degrees)
Ω: 27.7 Longitude of ascending node (degrees)
T: 1999.500 Epoch of periastron passage (year)
e: 0.949 Eccentricity
ω: 112.7 Longitude of periastron (degrees)
Start-Year: 1175.0 Year
End-Year: 2875.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDO269
Position: 171924.63-441322.8 Epoch-2000 right ascension and declination
WDS-ID: 17194-4413 WDS designation
Discoverer Code: HDO269 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 84748 Hipparcos catalog number
V1: 7.3 Magnitude of the primary
V2: 7.5 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2017 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HDO269
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:45:30 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 = [0.09958025218952457, 0.09931888130910498, 0.09905732683416173, 0.09879558922218765, 0.09853366893018937, 0.09827156641468693, 0.09800928213172436, 0.09774681653687411, 0.09748417008524435, 0.09722134323148372, 0.0969583364297904, 0.0966951501339153, 0.09643178479717103, 0.09616824087243787, 0.09590451881216858, 0.09564061906839509, 0.0953765420927363, 0.09511228833640431, 0.09484785825020806, 0.09458325228456317, ...], y_list = [0.7493580347798335, 0.7496897425449791, 0.7500200644814743, 0.7503489997818423, 0.7506765476336518, 0.751002707219512, 0.7513274777170564, 0.7516508582989329, 0.7519728481327893, 0.7522934463812636, 0.7526126522019684, 0.752930464747481, 0.7532468831653284, 0.7535619065979741, 0.7538755341828077, 0.7541877650521313, 0.7544985983331437, 0.7548080331479283, 0.7551160686134426, 0.7554227038415003, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.09958025218952457, 0.09931888130910498, 0.09905732683416173, 0.09879558922218765, 0.09853366893018937, 0.09827156641468693, 0.09800928213172436, 0.09774681653687411, 0.09748417008524435, 0.09722134323148372, 0.0969583364297904, 0.0966951501339153, 0.09643178479717103, 0.09616824087243787, 0.09590451881216858, 0.09564061906839509, 0.0953765420927363, 0.09511228833640431, 0.09484785825020806, 0.09458325228456317, ...], y_list=[0.7493580347798335, 0.7496897425449791, 0.7500200644814743, 0.7503489997818423, 0.7506765476336518, 0.751002707219512, 0.7513274777170564, 0.7516508582989329, 0.7519728481327893, 0.7522934463812636, 0.7526126522019684, 0.752930464747481, 0.7532468831653284, 0.7535619065979741, 0.7538755341828077, 0.7541877650521313, 0.7544985983331437, 0.7548080331479283, 0.7551160686134426, 0.7554227038415003, ...])
    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([-0.00762216, 0.00213614, 0.01170909, ..., -0.03103385, -0.02447388, -0.01666475]), y = array([-0.01213592, -0.02611958, -0.03760846, ..., 0.03220176, 0.01807081, 0.0030513 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.00762216, 0.00213614, 0.01170909, ..., -0.03103385, -0.02447388, -0.01666475]), array([-0.01213592, -0.02611958, -0.03760846, ..., 0.03220176, 0.01807081, 0.0030513 ])], 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([-0.00762216, 0.00213614, 0.01170909, ..., -0.03103385, -0.02447388, -0.01666475]), array([-0.01213592, -0.02611958, -0.03760846, ..., 0.03220176, 0.01807081, 0.0030513 ])], 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([[-0.00762216, 0.00213614, 0.01170909, .... 0.03220176, 0.01807081, -0.01213592]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0. , 0.00894155, 0.01678325, ..., 0.97369287, 0.98186227, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1707, 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([[-0.00762216, 0.00213614, 0.01170909, .... 0.03220176, 0.01807081, -0.01213592]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0. , 0.00894155, 0.01678325, ..., 0.97369287, 0.98186227, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1707, 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>