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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:37:48

Orbital Elements for BU178
WDS: BU178 WDS ID/Discoverer
P: 106.000 Orbital period (years)
a: 0.394 Semi-major axis (arcseconds)
i: 82.2 Inclination (degrees)
Ω: 140.8 Longitude of ascending node (degrees)
T: 1944.210 Epoch of periastron passage (year)
e: 0.743 Eccentricity
ω: 2.2 Longitude of periastron (degrees)
Start-Year: 1972.0 Year
End-Year: 2078.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU178
Position: 225510.96-045916.4 Epoch-2000 right ascension and declination
WDS-ID: 22552-0459 WDS designation
Discoverer Code: BU178 Discover designation and components
ADS number: 16365 Aitken Double Star catalog
HD number: 216718 HD catalog number
Hipparcos number: 113184 Hipparcos catalog number
V1: 6.03 Magnitude of the primary
V2: 7.75 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2017 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU178
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:37:48 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 = [0.362651538586623, 0.36952619000396003, 0.3760004166760701, 0.38208496530209995, 0.38778972921059274, 0.3931238249726051, 0.39809565970270905, 0.4027129903311719, 0.40698297592743854, 0.4109122239867716, 0.4145068315020528, 0.41777242114319074, 0.42071417404192474, 0.42333685821946104, 0.42564485433702737, 0.42764217849403974, 0.42933250251271105, 0.4307191719651526, 0.4318052221640544, 0.43259339230751914, ...], y_list = [0.40444700086164126, 0.4144182669782925, 0.4239404813571286, 0.4330233502987882, 0.4416758174521554, 0.44990612253049245, 0.4577218536199547, 0.46512999379744613, 0.4721369626897819, 0.4787486535287471, 0.48497046627498036, 0.49080733664948684, 0.49626376308729253, 0.5013438294211754, 0.506051225788328, 0.5103892669211118, 0.5143609082689946, 0.5179687601295229, 0.5212150999423574, 0.5241018828785339, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.362651538586623, 0.36952619000396003, 0.3760004166760701, 0.38208496530209995, 0.38778972921059274, 0.3931238249726051, 0.39809565970270905, 0.4027129903311719, 0.40698297592743854, 0.4109122239867716, 0.4145068315020528, 0.41777242114319074, 0.42071417404192474, 0.42333685821946104, 0.42564485433702737, 0.42764217849403974, 0.42933250251271105, 0.4307191719651526, 0.4318052221640544, 0.43259339230751914, ...], y_list=[0.40444700086164126, 0.4144182669782925, 0.4239404813571286, 0.4330233502987882, 0.4416758174521554, 0.44990612253049245, 0.4577218536199547, 0.46512999379744613, 0.4721369626897819, 0.4787486535287471, 0.48497046627498036, 0.49080733664948684, 0.49626376308729253, 0.5013438294211754, 0.506051225788328, 0.5103892669211118, 0.5143609082689946, 0.5179687601295229, 0.5212150999423574, 0.5241018828785339, ...])
    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([-3.67617715e-02, -5.27828523e-02, -6.3694....92915658e-02, 3.55192225e-04, -1.85615988e-02]), y = array([-0.01218859, -0.03996279, -0.06374012, -0...7, 0.07154764, 0.04449805, 0.01641375]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-3.67617715e-02, -5.27828523e-02, -6.3694....92915658e-02, 3.55192225e-04, -1.85615988e-02]), array([-0.01218859, -0.03996279, -0.06374012, -0...7, 0.07154764, 0.04449805, 0.01641375])], 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([-3.67617715e-02, -5.27828523e-02, -6.3694....92915658e-02, 3.55192225e-04, -1.85615988e-02]), array([-0.01218859, -0.03996279, -0.06374012, -0...7, 0.07154764, 0.04449805, 0.01641375])], 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([[-3.67617715e-02, -5.27828523e-02, -6.369...e-02, 4.44980529e-02, -1.21885935e-02]]), 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. , 0.0200977 , 0.03649582, 0.045...6515, 0.9368328 , 0.9575294 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=113, 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([[-3.67617715e-02, -5.27828523e-02, -6.369...e-02, 4.44980529e-02, -1.21885935e-02]]), 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. , 0.0200977 , 0.03649582, 0.045...6515, 0.9368328 , 0.9575294 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 113, 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>