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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:23:36

Orbital Elements for BU1111BC
WDS: BU1111BC WDS ID/Discoverer
P: 40.000 Orbital period (years)
a: 0.24 Semi-major axis (arcseconds)
i: 42.0 Inclination (degrees)
Ω: 46.0 Longitude of ascending node (degrees)
T: 1998.000 Epoch of periastron passage (year)
e: 0.25 Eccentricity
ω: 141.0 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 BU1111BC
Position: 142322.59+082641.7 Epoch-2000 right ascension and declination
WDS-ID: 14234+0827 WDS designation
Discoverer Code: BU1111BC Discover designation and components
ADS number: 9247 Aitken Double Star catalog
HD number: 126128 HD catalog number
Hipparcos number: 70327 Hipparcos catalog number
V1: 7.4 Magnitude of the primary
V2: 7.7 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 1 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU1111BC
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:23:37 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 = [0.1919391161825984, 0.1875924934881444, 0.17838287820546755, 0.16505661506986294, 0.1483062607294114, 0.12876113637139042, 0.10698794342222977, 0.0834963181217721, 0.05874641747979961, 0.03315699948724835, 0.007113254677171033, -0.01902591552839834, -0.04492124725005122, -0.0702470517566789, -0.09468565310729468, -0.11792223014330314, -0.1396399756330182, -0.15951551580968198, -0.17721458779232388, -0.19238805165485448, ...], y_list = [0.00018707353482882373, 0.03394576288712265, 0.06684265538072402, 0.09821269864185685, 0.1275591868631083, 0.1545144056569722, 0.17880759406442678, 0.20024007495378543, 0.21866647747809467, 0.23398080995023904, 0.24610627762815993, 0.25498796265363627, 0.2605877047556278, 0.26288071376927524, 0.2618536033888931, 0.2575036705647306, 0.24983936175680085, 0.23888198117052523, 0.22466881406651387, 0.20725797541142005, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.1919391161825984, 0.1875924934881444, 0.17838287820546755, 0.16505661506986294, 0.1483062607294114, 0.12876113637139042, 0.10698794342222977, 0.0834963181217721, 0.05874641747979961, 0.03315699948724835, 0.007113254677171033, -0.01902591552839834, -0.04492124725005122, -0.0702470517566789, -0.09468565310729468, -0.11792223014330314, -0.1396399756330182, -0.15951551580968198, -0.17721458779232388, -0.19238805165485448, ...], y_list=[0.00018707353482882373, 0.03394576288712265, 0.06684265538072402, 0.09821269864185685, 0.1275591868631083, 0.1545144056569722, 0.17880759406442678, 0.20024007495378543, 0.21866647747809467, 0.23398080995023904, 0.24610627762815993, 0.25498796265363627, 0.2605877047556278, 0.26288071376927524, 0.2618536033888931, 0.2575036705647306, 0.24983936175680085, 0.23888198117052523, 0.22466881406651387, 0.20725797541142005, ...])
    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([-0.17520382, -0.14989566, -0.11888666, -0... , -0.21679251, -0.20842642, -0.19466705]), y = array([-2.42492131e-02, -5.76834499e-02, -8.8887...08e-02, 4.40196259e-02, 1.00214966e-02]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.17520382, -0.14989566, -0.11888666, -0... , -0.21679251, -0.20842642, -0.19466705]), array([-2.42492131e-02, -5.76834499e-02, -8.8887...08e-02, 4.40196259e-02, 1.00214966e-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([-0.17520382, -0.14989566, -0.11888666, -0... , -0.21679251, -0.20842642, -0.19466705]), array([-2.42492131e-02, -5.76834499e-02, -8.8887...08e-02, 4.40196259e-02, 1.00214966e-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([[-1.75203818e-01, -1.49895662e-01, -1.188...e-02, 4.40196259e-02, -2.42492131e-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. , 0.03225941, 0.06610264, 0.100...1468, 0.91549339, 0.941591 , 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([[-1.75203818e-01, -1.49895662e-01, -1.188...e-02, 4.40196259e-02, -2.42492131e-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. , 0.03225941, 0.06610264, 0.100...1468, 0.91549339, 0.941591 , 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>