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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:31:07

Orbital Elements for STF1944
WDS: STF1944 WDS ID/Discoverer
P: 1030.000 Orbital period (years)
a: 1.131 Semi-major axis (arcseconds)
i: 126.6 Inclination (degrees)
Ω: 142.6 Longitude of ascending node (degrees)
T: 2089.300 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 294.8 Longitude of periastron (degrees)
Start-Year: 1510.0 Year
End-Year: 2540.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1944
Position: 152742.14+060604.5 Epoch-2000 right ascension and declination
WDS-ID: 15277+0606 WDS designation
Discoverer Code: STF1944 Discover designation and components
ADS number: 9647 Aitken Double Star catalog
HD number: 137761 HD catalog number
Hipparcos number: 75682 Hipparcos catalog number
V1: 8.32 Magnitude of the primary
V2: 8.79 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STF1944
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:31:08 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 = [-0.481078175456924, -0.4783683517058533, -0.4756530745011521, -0.47293238050901404, -0.47020630629318366, -0.4674748883164916, -0.46473816294235193, -0.4619961664362697, -0.45924893496732694, -0.45649650460967967, -0.45373891134402533, -0.45097619105908304, -0.44820837955304704, -0.44543551253505315, -0.44265762562661926, -0.4398747543630969, -0.43708693419510297, -0.4342942004899475, -0.4314965885330614, -0.4286941335294082, ...], y_list = [0.9526758207694247, 0.9556847157149325, 0.9586827157629687, 0.9616697982478064, 0.9646459404989248, 0.9676111198398475, 0.9705653135870169, 0.9735084990486607, 0.9764406535236738, 0.9793617543004917, 0.9822717786559884, 0.9851707038543644, 0.9880585071460565, 0.9909351657666323, 0.9938006569357155, 0.9966549578558909, 0.999498045711633, 1.0023298976682353, 1.0051504908707387, 1.007959802442874, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.481078175456924, -0.4783683517058533, -0.4756530745011521, -0.47293238050901404, -0.47020630629318366, -0.4674748883164916, -0.46473816294235193, -0.4619961664362697, -0.45924893496732694, -0.45649650460967967, -0.45373891134402533, -0.45097619105908304, -0.44820837955304704, -0.44543551253505315, -0.44265762562661926, -0.4398747543630969, -0.43708693419510297, -0.4342942004899475, -0.4314965885330614, -0.4286941335294082, ...], y_list=[0.9526758207694247, 0.9556847157149325, 0.9586827157629687, 0.9616697982478064, 0.9646459404989248, 0.9676111198398475, 0.9705653135870169, 0.9735084990486607, 0.9764406535236738, 0.9793617543004917, 0.9822717786559884, 0.9851707038543644, 0.9880585071460565, 0.9909351657666323, 0.9938006569357155, 0.9966549578558909, 0.999498045711633, 1.0023298976682353, 1.0051504908707387, 1.007959802442874, ...])
    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([-0.85944473, -0.85927751, -0.85908687, ..., -0.85980754, -0.85970958, -0.8595887 ]), y = array([-0.0011415 , -0.00582929, -0.01051692, ..., 0.01292155, 0.00823404, 0.00354632]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.85944473, -0.85927751, -0.85908687, ..., -0.85980754, -0.85970958, -0.8595887 ]), array([-0.0011415 , -0.00582929, -0.01051692, ..., 0.01292155, 0.00823404, 0.00354632])], 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([-0.85944473, -0.85927751, -0.85908687, ..., -0.85980754, -0.85970958, -0.8595887 ]), array([-0.0011415 , -0.00582929, -0.01051692, ..., 0.01292155, 0.00823404, 0.00354632])], 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([[-0.85944473, -0.85927751, -0.85908687, .... 0.01292155, 0.00823404, -0.0011415 ]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 8.86536919e-04, 1.7732126... 9.97341239e-01, 9.98227353e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1037, 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([[-0.85944473, -0.85927751, -0.85908687, .... 0.01292155, 0.00823404, -0.0011415 ]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 8.86536919e-04, 1.7732126... 9.97341239e-01, 9.98227353e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1037, 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>