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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:12:52

Orbital Elements for KOU15
WDS: KOU15 WDS ID/Discoverer
P: 40.000 Orbital period (years)
a: 0.2 Semi-major axis (arcseconds)
i: 113.3 Inclination (degrees)
Ω: 5.8 Longitude of ascending node (degrees)
T: 2025.420 Epoch of periastron passage (year)
e: 0.228 Eccentricity
ω: 188.9 Longitude of periastron (degrees)
Start-Year: 2005.0 Year
End-Year: 2045.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KOU15
Position: 124249.80-555649.1 Epoch-2000 right ascension and declination
WDS-ID: 12428-5557 WDS designation
Discoverer Code: KOU15 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 62026 Hipparcos catalog number
V1: 6.49 Magnitude of the primary
V2: 7.46 Magnitude of the secondary
Equinox: Equinox
Date: 2021 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for KOU15
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:12:52 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 = [-0.013786096440791918, -0.0037082288079653327, 0.006418987692909879, 0.016459397945203715, 0.0262732607299558, 0.0357152499371745, 0.04463240676966536, 0.05286208271231018, 0.06022996940835028, 0.06654840962557056, 0.07161534739186988, 0.07521453983549174, 0.0771180603865351, 0.07709270475950782, 0.07491263525515314, 0.07038124145930148, 0.06336511155361531, 0.053840891523925564, 0.041949910598559556, 0.028045281807700325, ...], y_list = [0.24383079799842483, 0.24072332079524417, 0.23440463276882348, 0.2249282352514418, 0.21236388384517665, 0.19680087286051123, 0.1783529225052061, 0.15716500448811127, 0.1334225646029616, 0.10736371881092031, 0.07929507657730318, 0.049611798708824206, 0.018822155982285347, -0.012424098751689124, -0.04330632274362745, -0.07280923878636729, -0.09971777987884639, -0.12265102741994692, -0.14016000802241083, -0.15090499201333402, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.013786096440791918, -0.0037082288079653327, 0.006418987692909879, 0.016459397945203715, 0.0262732607299558, 0.0357152499371745, 0.04463240676966536, 0.05286208271231018, 0.06022996940835028, 0.06654840962557056, 0.07161534739186988, 0.07521453983549174, 0.0771180603865351, 0.07709270475950782, 0.07491263525515314, 0.07038124145930148, 0.06336511155361531, 0.053840891523925564, 0.041949910598559556, 0.028045281807700325, ...], y_list=[0.24383079799842483, 0.24072332079524417, 0.23440463276882348, 0.2249282352514418, 0.21236388384517665, 0.19680087286051123, 0.1783529225052061, 0.15716500448811127, 0.1334225646029616, 0.10736371881092031, 0.07929507657730318, 0.049611798708824206, 0.018822155982285347, -0.012424098751689124, -0.04330632274362745, -0.07280923878636729, -0.09971777987884639, -0.12265102741994692, -0.14016000802241083, -0.15090499201333402, ...])
    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([-0.06744191, -0.05849554, -0.04727696, -0...7, -0.08056706, -0.07838527, -0.07405338]), y = array([-0.02898135, -0.06079683, -0.09022022, -0...1, 0.06836278, 0.03660644, 0.00386208]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.06744191, -0.05849554, -0.04727696, -0...7, -0.08056706, -0.07838527, -0.07405338]), array([-0.02898135, -0.06079683, -0.09022022, -0...1, 0.06836278, 0.03660644, 0.00386208])], 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([-0.06744191, -0.05849554, -0.04727696, -0...7, -0.08056706, -0.07838527, -0.07405338]), array([-0.02898135, -0.06079683, -0.09022022, -0...1, 0.06836278, 0.03660644, 0.00386208])], 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([[-0.06744191, -0.05849554, -0.04727696, -... 0.06836278, 0.03660644, -0.02898135]]), 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. , 0.03622716, 0.07074451, 0.102...3657, 0.89222012, 0.92711195, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=47, 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([[-0.06744191, -0.05849554, -0.04727696, -... 0.06836278, 0.03660644, -0.02898135]]), 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. , 0.03622716, 0.07074451, 0.102...3657, 0.89222012, 0.92711195, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 47, 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>