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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:45:23

Orbital Elements for BU1174
WDS: BU1174 WDS ID/Discoverer
P: 346.000 Orbital period (years)
a: 1.221 Semi-major axis (arcseconds)
i: 120.8 Inclination (degrees)
Ω: 7.6 Longitude of ascending node (degrees)
T: 2039.800 Epoch of periastron passage (year)
e: 0.797 Eccentricity
ω: 249.4 Longitude of periastron (degrees)
Start-Year: 1852.0 Year
End-Year: 2198.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1174
Position: 030332.01-105829.3 Epoch-2000 right ascension and declination
WDS-ID: 03035-1059 WDS designation
Discoverer Code: BU1174 Discover designation and components
ADS number: 2323 Aitken Double Star catalog
HD number: 19063 HD catalog number
Hipparcos number: 14235 Hipparcos catalog number
V1: 7.24 Magnitude of the primary
V2: 10.96 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2015 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for BU1174
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:45:23 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 = [0.9011751064407603, 0.9041815475992901, 0.9071359340797854, 0.9100381906878768, 0.9128882384448374, 0.9156859945622002, 0.9184313725371009, 0.9211242815647541, 0.9237646274921243, 0.9263523119896816, 0.9288872327782406, 0.931369283591135, 0.9337983541359228, 0.9361743300553428, 0.9384970928872599, 0.9407665200233614, 0.942982484666394, 0.9451448557857389, 0.9472534980711528, 0.9493082718845304, ...], y_list = [0.9981590698876568, 0.9921983266453424, 0.9861804613391513, 0.9801059235983401, 0.9739751570818759, 0.9677885996443097, 0.961546683216638, 0.9552498352516431, 0.9488984766270677, 0.9424930236142696, 0.9360338874440631, 0.9295214744610024, 0.9229561862734212, 0.9163384198995903, 0.9096685679104285, 0.9029470185691665, 0.896174155968411, 0.8893503601650937, 0.8824760073138002, 0.8755514697989623, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.9011751064407603, 0.9041815475992901, 0.9071359340797854, 0.9100381906878768, 0.9128882384448374, 0.9156859945622002, 0.9184313725371009, 0.9211242815647541, 0.9237646274921243, 0.9263523119896816, 0.9288872327782406, 0.931369283591135, 0.9337983541359228, 0.9361743300553428, 0.9384970928872599, 0.9407665200233614, 0.942982484666394, 0.9451448557857389, 0.9472534980711528, 0.9493082718845304, ...], y_list=[0.9981590698876568, 0.9921983266453424, 0.9861804613391513, 0.9801059235983401, 0.9739751570818759, 0.9677885996443097, 0.961546683216638, 0.9552498352516431, 0.9488984766270677, 0.9424930236142696, 0.9360338874440631, 0.9295214744610024, 0.9229561862734212, 0.9163384198995903, 0.9096685679104285, 0.9029470185691665, 0.896174155968411, 0.8893503601650937, 0.8824760073138002, 0.8755514697989623, ...])
    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([-1.26971881e-01, -1.10128663e-01, -8.9001....50908374e-01, -1.46967608e-01, -1.39179864e-01]), y = array([-2.83975335e-02, -9.01498420e-02, -1.4838....55552834e-01, 9.62259592e-02, 3.44335690e-02]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.26971881e-01, -1.10128663e-01, -8.9001....50908374e-01, -1.46967608e-01, -1.39179864e-01]), array([-2.83975335e-02, -9.01498420e-02, -1.4838....55552834e-01, 9.62259592e-02, 3.44335690e-02])], 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([-1.26971881e-01, -1.10128663e-01, -8.9001....50908374e-01, -1.46967608e-01, -1.39179864e-01]), array([-2.83975335e-02, -9.01498420e-02, -1.4838....55552834e-01, 9.62259592e-02, 3.44335690e-02])], 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([[-1.26971881e-01, -1.10128663e-01, -8.900...e-01, 9.62259592e-02, -2.83975335e-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. , 0.01443195, 0.02839994, 0.041...8165, 0.95813576, 0.97154169, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=353, 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([[-1.26971881e-01, -1.10128663e-01, -8.900...e-01, 9.62259592e-02, -2.83975335e-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. , 0.01443195, 0.02839994, 0.041...8165, 0.95813576, 0.97154169, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 353, 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>