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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:59:26

Orbital Elements for STF1457
WDS: STF1457 WDS ID/Discoverer
P: 488.000 Orbital period (years)
a: 1.1962 Semi-major axis (arcseconds)
i: 66.0 Inclination (degrees)
Ω: 159.89 Longitude of ascending node (degrees)
T: 1748.000 Epoch of periastron passage (year)
e: 0.5967 Eccentricity
ω: 339.2 Longitude of periastron (degrees)
Start-Year: 1781.0 Year
End-Year: 2269.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1457
Position: 103843.14+054402.9 Epoch-2000 right ascension and declination
WDS-ID: 10387+0544 WDS designation
Discoverer Code: STF1457 Discover designation and components
ADS number: 7864 Aitken Double Star catalog
HD number: 92184 HD catalog number
Hipparcos number: 52097 Hipparcos catalog number
V1: 7.69 Magnitude of the primary
V2: 8.16 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STF1457
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:59:26 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 = [0.1560690994346837, 0.16771402041554018, 0.17924932664792403, 0.19067263264421797, 0.20198196714809485, 0.2131757289985831, 0.22425264719715188, 0.23521174484389898, 0.24605230661911748, 0.25677384950120324, 0.26737609642936916, 0.27785895263871757, 0.2882224844150011, 0.2984669000361644, 0.30859253268709447, 0.3185998251525214, 0.32848931611055804, 0.3382616278658007, 0.3479174553761574, 0.3574575564416593, ...], y_list = [-0.37977509275780497, -0.3695866987804318, -0.3591565725943633, -0.3485018786023925, -0.33763873481116735, -0.3265822733472132, -0.3153466989655548, -0.3039453452459743, -0.2923907282771601, -0.2806945977122992, -0.26886798514486876, -0.256921249803724, -0.24486412160477278, -0.23270574162492663, -0.22045470008448415, -0.20811907193832485, -0.19570645018551763, -0.18322397701225354, -0.17067837288535742, -0.1580759637136097, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.1560690994346837, 0.16771402041554018, 0.17924932664792403, 0.19067263264421797, 0.20198196714809485, 0.2131757289985831, 0.22425264719715188, 0.23521174484389898, 0.24605230661911748, 0.25677384950120324, 0.26737609642936916, 0.27785895263871757, 0.2882224844150011, 0.2984669000361644, 0.30859253268709447, 0.3185998251525214, 0.32848931611055804, 0.3382616278658007, 0.3479174553761574, 0.3574575564416593, ...], y_list=[-0.37977509275780497, -0.3695866987804318, -0.3591565725943633, -0.3485018786023925, -0.33763873481116735, -0.3265822733472132, -0.3153466989655548, -0.3039453452459743, -0.2923907282771601, -0.2806945977122992, -0.26886798514486876, -0.256921249803724, -0.24486412160477278, -0.23270574162492663, -0.22045470008448415, -0.20811907193832485, -0.19570645018551763, -0.18322397701225354, -0.17067837288535742, -0.1580759637136097, ...])
    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([-0.25646043, -0.2589119 , -0.26099237, -0...24336264, -0.24709082, -0.25052949, -0.25365937]), y = array([-0.00862173, -0.03214563, -0.05562319, -0...08529821, 0.06190077, 0.03843104, 0.01491419]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.25646043, -0.2589119 , -0.26099237, -0...24336264, -0.24709082, -0.25052949, -0.25365937]), array([-0.00862173, -0.03214563, -0.05562319, -0...08529821, 0.06190077, 0.03843104, 0.01491419])], 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([-0.25646043, -0.2589119 , -0.26099237, -0...24336264, -0.24709082, -0.25052949, -0.25365937]), array([-0.00862173, -0.03214563, -0.05562319, -0...08529821, 0.06190077, 0.03843104, 0.01491419])], 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([[-0.25646043, -0.2589119 , -0.26099237, -...8529821, 0.06190077, 0.03843104, -0.00862173]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.00451884, 0.00902206, 0.013... 0.98188016, 0.98640689, 0.99093891, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=495, 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([[-0.25646043, -0.2589119 , -0.26099237, -...8529821, 0.06190077, 0.03843104, -0.00862173]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.00451884, 0.00902206, 0.013... 0.98188016, 0.98640689, 0.99093891, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 495, 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>