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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:39:59

Orbital Elements for DUN245
WDS: DUN245 WDS ID/Discoverer
P: 37000.000 Orbital period (years)
a: 23.0 Semi-major axis (arcseconds)
i: 110.0 Inclination (degrees)
Ω: 110.0 Longitude of ascending node (degrees)
T: 4200.000 Epoch of periastron passage (year)
e: 0.6 Eccentricity
ω: 260.0 Longitude of periastron (degrees)
Start-Year: -16475.0 Year
End-Year: 20525.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DUN245
Position: 230837.60-594411.6 Epoch-2000 right ascension and declination
WDS-ID: 23086-5944 WDS designation
Discoverer Code: DUN245 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 7.45 Magnitude of the primary
V2: 9.44 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for DUN245
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:40:00 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 = [-13.896227677942383, -13.894647435041287, -13.893067091320686, -13.891486646794942, -13.88990610147826, -13.888325455384939, -13.886744708529283, -13.885163860925593, -13.88358291258806, -13.882001863531052, -13.880420713768782, -13.878839463315568, -13.877258112185643, -13.87567666039331, -13.8740951079528, -13.872513454878415, -13.870931701184434, -13.86934984688507, -13.86776789199462, -13.866185836527361, ...], y_list = [7.645701976665255, 7.646601326639831, 7.647500621130731, 7.6483998601329395, 7.649299043641522, 7.650198171651493, 7.651097244157873, 7.651996261155665, 7.652895222639948, 7.6537941286056945, 7.654692979047969, 7.655591773961766, 7.6564905133421375, 7.657389197184086, 7.658287825482662, 7.659186398232869, 7.660084915429731, 7.660983377068294, 7.661881783143571, 7.662780133650583, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-13.896227677942383, -13.894647435041287, -13.893067091320686, -13.891486646794942, -13.88990610147826, -13.888325455384939, -13.886744708529283, -13.885163860925593, -13.88358291258806, -13.882001863531052, -13.880420713768782, -13.878839463315568, -13.877258112185643, -13.87567666039331, -13.8740951079528, -13.872513454878415, -13.870931701184434, -13.86934984688507, -13.86776789199462, -13.866185836527361, ...], y_list=[7.645701976665255, 7.646601326639831, 7.647500621130731, 7.6483998601329395, 7.649299043641522, 7.650198171651493, 7.651097244157873, 7.651996261155665, 7.652895222639948, 7.6537941286056945, 7.654692979047969, 7.655591773961766, 7.6564905133421375, 7.657389197184086, 7.658287825482662, 7.659186398232869, 7.660084915429731, 7.660983377068294, 7.661881783143571, 7.662780133650583, ...])
    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([-21.53821419, -21.53851472, -21.53881495,...-21.53731084, -21.53761225, -21.53791336]), y = array([-0.00071144, -0.00185266, -0.00299388, ..., 0.00271222, 0.001571 , 0.00042978]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-21.53821419, -21.53851472, -21.53881495,...-21.53731084, -21.53761225, -21.53791336]), array([-0.00071144, -0.00185266, -0.00299388, ..., 0.00271222, 0.001571 , 0.00042978])], 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([-21.53821419, -21.53851472, -21.53881495,...-21.53731084, -21.53761225, -21.53791336]), array([-0.00071144, -0.00185266, -0.00299388, ..., 0.00271222, 0.001571 , 0.00042978])], 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([[-2.15382142e+01, -2.15385147e+01, -2.153...71222192e-03, 1.57100142e-03, -7.11439642e-04]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 1.36722580e-05, 2.7343652... 9.99958978e-01, 9.99972653e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=37007, 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([[-2.15382142e+01, -2.15385147e+01, -2.153...71222192e-03, 1.57100142e-03, -7.11439642e-04]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 1.36722580e-05, 2.7343652... 9.99958978e-01, 9.99972653e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 37007, 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>