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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:25:41

Orbital Elements for A2517
WDS: A2517 WDS ID/Discoverer
P: 140.000 Orbital period (years)
a: 0.161 Semi-major axis (arcseconds)
i: 106.3 Inclination (degrees)
Ω: 14.6 Longitude of ascending node (degrees)
T: 2026.330 Epoch of periastron passage (year)
e: 0.3 Eccentricity
ω: 264.4 Longitude of periastron (degrees)
Start-Year: 1955.0 Year
End-Year: 2095.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2517
Position: 062333.35+173910.8 Epoch-2000 right ascension and declination
WDS-ID: 06236+1739 WDS designation
Discoverer Code: A2517 Discover designation and components
ADS number: 5002 Aitken Double Star catalog
HD number: 44635 HD catalog number
Hipparcos number: 30400 Hipparcos catalog number
V1: 9.07 Magnitude of the primary
V2: 9.52 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2016 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A2517
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:25:41 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 = [0.0494299076566953, 0.050939188227489475, 0.052401766178045664, 0.0538162936459393, 0.055181425715754254, 0.056495818412510744, 0.05775812677186368, 0.058967002983137805, 0.060121094602242874, 0.06121904288065797, 0.062259480978508044, 0.06324103254249269, 0.06416231009989962, 0.06502191363221926, 0.06581842920349038, 0.06655042766789454, 0.06721646346352488, 0.06781507350118143, 0.06834477615923465, 0.06880407039808636, ...], y_list = [0.04121451164677161, 0.036172677670135676, 0.031097679211530276, 0.02599416583282869, 0.0208667948751689, 0.015720238788683224, 0.010559192554522295, 0.005388381220769626, 0.00021256757424353972, -0.0049634402623492556, -0.010134780195789374, -0.015296528713110298, -0.020443692041720436, -0.025571197564312996, -0.030673884871774595, -0.03574649651810093, -0.04078366845245952, -0.04577992010357303, -0.050729644091888244, -0.05562709554559984, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.0494299076566953, 0.050939188227489475, 0.052401766178045664, 0.0538162936459393, 0.055181425715754254, 0.056495818412510744, 0.05775812677186368, 0.058967002983137805, 0.060121094602242874, 0.06121904288065797, 0.062259480978508044, 0.06324103254249269, 0.06416231009989962, 0.06502191363221926, 0.06581842920349038, 0.06655042766789454, 0.06721646346352488, 0.06781507350118143, 0.06834477615923465, 0.06880407039808636, ...], y_list=[0.04121451164677161, 0.036172677670135676, 0.031097679211530276, 0.02599416583282869, 0.0208667948751689, 0.015720238788683224, 0.010559192554522295, 0.005388381220769626, 0.00021256757424353972, -0.0049634402623492556, -0.010134780195789374, -0.015296528713110298, -0.020443692041720436, -0.025571197564312996, -0.030673884871774595, -0.03574649651810093, -0.04078366845245952, -0.04577992010357303, -0.050729644091888244, -0.05562709554559984, ...])
    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([-0.03201409, -0.02948414, -0.02678143, -0...5, -0.0384422 , -0.03650329, -0.0343576 ]), y = array([-0.00274484, -0.01224757, -0.0216785 , -0...9, 0.02564187, 0.01625388, 0.00677396]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.03201409, -0.02948414, -0.02678143, -0...5, -0.0384422 , -0.03650329, -0.0343576 ]), array([-0.00274484, -0.01224757, -0.0216785 , -0...9, 0.02564187, 0.01625388, 0.00677396])], 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([-0.03201409, -0.02948414, -0.02678143, -0...5, -0.0384422 , -0.03650329, -0.0343576 ]), array([-0.00274484, -0.01224757, -0.0216785 , -0...9, 0.02564187, 0.01625388, 0.00677396])], 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([[-0.03201409, -0.02948414, -0.02678143, -... 0.02564187, 0.01625388, -0.00274484]]), 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. , 0.01463365, 0.0292328 , 0.043...8772, 0.95668422, 0.97094937, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=147, 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([[-0.03201409, -0.02948414, -0.02678143, -... 0.02564187, 0.01625388, -0.00274484]]), 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. , 0.01463365, 0.0292328 , 0.043...8772, 0.95668422, 0.97094937, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 147, 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>