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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:34:16

Orbital Elements for HDS3187
WDS: HDS3187 WDS ID/Discoverer
P: 120.000 Orbital period (years)
a: 0.375 Semi-major axis (arcseconds)
i: 103.3 Inclination (degrees)
Ω: 187.5 Longitude of ascending node (degrees)
T: 2030.293 Epoch of periastron passage (year)
e: 0.4 Eccentricity
ω: 41.7 Longitude of periastron (degrees)
Start-Year: 1965.0 Year
End-Year: 2085.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3187
Position: 222951.74-310048.0 Epoch-2000 right ascension and declination
WDS-ID: 22299-3101 WDS designation
Discoverer Code: HDS3187 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 213136 HD catalog number
Hipparcos number: 111051 Hipparcos catalog number
V1: 10.25 Magnitude of the primary
V2: 10.71 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS3187
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:34:16 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 = [0.010681325435070627, 0.014084712618597462, 0.017473873588758095, 0.020845464186318358, 0.024196163278683226, 0.02752266396185341, 0.030821664807418887, 0.0340898612233484, 0.03732393687139409, 0.04052055508516236, 0.04367635023416524, 0.046787919174818345, 0.04985181196188759, 0.052864523253450146, 0.05582248274958249, 0.05872204562738143, 0.061559482564933606, 0.0643309693478492, 0.06703257599768896, 0.06966025535866019, ...], y_list = [0.43667467777887536, 0.4304926268732733, 0.4238756642427334, 0.4168324256143338, 0.40937139957324337, 0.4015009475378919, 0.3932293242454965, 0.3845646986336815, 0.3755151752436617, 0.36608881628785755, 0.35629366454211214, 0.346137766589473, 0.3356291991017702, 0.3247760935785802, 0.31358666490356113, 0.30206924070897007, 0.29023229293370145, 0.27808447170653944, 0.26563464188701197, 0.2528919226379302, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.010681325435070627, 0.014084712618597462, 0.017473873588758095, 0.020845464186318358, 0.024196163278683226, 0.02752266396185341, 0.030821664807418887, 0.0340898612233484, 0.03732393687139409, 0.04052055508516236, 0.04367635023416524, 0.046787919174818345, 0.04985181196188759, 0.052864523253450146, 0.05582248274958249, 0.05872204562738143, 0.061559482564933606, 0.0643309693478492, 0.06703257599768896, 0.06966025535866019, ...], y_list=[0.43667467777887536, 0.4304926268732733, 0.4238756642427334, 0.4168324256143338, 0.40937139957324337, 0.4015009475378919, 0.3932293242454965, 0.3845646986336815, 0.3755151752436617, 0.36608881628785755, 0.35629366454211214, 0.346137766589473, 0.3356291991017702, 0.3247760935785802, 0.31358666490356113, 0.30206924070897007, 0.29023229293370145, 0.27808447170653944, 0.26563464188701197, 0.2528919226379302, ...])
    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([-0.05639692, -0.05109565, -0.0452765 , -0... , -0.06911788, -0.06540445, -0.06116693]), y = array([-0.00932806, -0.03593381, -0.06217176, -0...3, 0.07011711, 0.04391761, 0.01736888]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.05639692, -0.05109565, -0.0452765 , -0... , -0.06911788, -0.06540445, -0.06116693]), array([-0.00932806, -0.03593381, -0.06217176, -0...3, 0.07011711, 0.04391761, 0.01736888])], 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([-0.05639692, -0.05109565, -0.0452765 , -0... , -0.06911788, -0.06540445, -0.06116693]), array([-0.00932806, -0.03593381, -0.06217176, -0...3, 0.07011711, 0.04391761, 0.01736888])], 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([[-5.63969241e-02, -5.10956549e-02, -4.527...e-02, 4.39176095e-02, -9.32805913e-03]]), 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. , 0.01766811, 0.03517128, 0.052...384 , 0.94759661, 0.96483006, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=127, 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([[-5.63969241e-02, -5.10956549e-02, -4.527...e-02, 4.39176095e-02, -9.32805913e-03]]), 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. , 0.01766811, 0.03517128, 0.052...384 , 0.94759661, 0.96483006, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 127, 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>