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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:40:46

Orbital Elements for HU399
WDS: HU399 WDS ID/Discoverer
P: 600.000 Orbital period (years)
a: 0.504 Semi-major axis (arcseconds)
i: 70.3 Inclination (degrees)
Ω: 141.4 Longitude of ascending node (degrees)
T: 2012.050 Epoch of periastron passage (year)
e: 0.846 Eccentricity
ω: 326.2 Longitude of periastron (degrees)
Start-Year: 1725.0 Year
End-Year: 2325.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU399
Position: 231639.23-153342.7 Epoch-2000 right ascension and declination
WDS-ID: 23167-1534 WDS designation
Discoverer Code: HU399 Discover designation and components
ADS number: 16643 Aitken Double Star catalog
HD number: 219544 HD catalog number
Hipparcos number: 114919 Hipparcos catalog number
V1: 9.56 Magnitude of the primary
V2: 10.31 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HU399
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:40:46 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 = [0.6203184499964278, 0.6203682999604208, 0.6204072885563668, 0.620435408137765, 0.6204526507582524, 0.6204590081705422, 0.6204544718253157, 0.6204390328700666, 0.6204126821479055, 0.620375410196314, 0.6203272072388991, 0.6202680632075702, 0.6201979677104303, 0.6201169100484419, 0.6200248792098676, 0.6199218638687186, 0.6198078523831533, 0.6196828327938234, 0.61954679282217, 0.6193997198686652, ...], y_list = [0.5066747172282245, 0.507486165123236, 0.5082887279812506, 0.5090823860452828, 0.5098671192946801, 0.5106429074426495, 0.5114097299337323, 0.5121675659412248, 0.5129163943645665, 0.5136561938266683, 0.5143869427653613, 0.5151086190850334, 0.5158212006338055, 0.5165246649024595, 0.5172189890913973, 0.517904150107686, 0.5185801245620478, 0.5192468887657958, 0.5199044187277195, 0.5205526901509053, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.6203184499964278, 0.6203682999604208, 0.6204072885563668, 0.620435408137765, 0.6204526507582524, 0.6204590081705422, 0.6204544718253157, 0.6204390328700666, 0.6204126821479055, 0.620375410196314, 0.6203272072388991, 0.6202680632075702, 0.6201979677104303, 0.6201169100484419, 0.6200248792098676, 0.6199218638687186, 0.6198078523831533, 0.6196828327938234, 0.61954679282217, 0.6193997198686652, ...], y_list=[0.5066747172282245, 0.507486165123236, 0.5082887279812506, 0.5090823860452828, 0.5098671192946801, 0.5106429074426495, 0.5114097299337323, 0.5121675659412248, 0.5129163943645665, 0.5136561938266683, 0.5143869427653613, 0.5151086190850334, 0.5158212006338055, 0.5165246649024595, 0.5172189890913973, 0.517904150107686, 0.5185801245620478, 0.5192468887657958, 0.5199044187277195, 0.5205526901509053, ...])
    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([-3.80837815e-02, -4.37669952e-02, -4.8322...00e-02, -2.44627593e-02, -3.15610987e-02]), y = array([-0.00341889, -0.01643295, -0.02901719, -0...3, 0.03521425, 0.02260914, 0.00967873]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-3.80837815e-02, -4.37669952e-02, -4.8322...00e-02, -2.44627593e-02, -3.15610987e-02]), array([-0.00341889, -0.01643295, -0.02901719, -0...3, 0.03521425, 0.02260914, 0.00967873])], 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([-3.80837815e-02, -4.37669952e-02, -4.8322...00e-02, -2.44627593e-02, -3.15610987e-02]), array([-0.00341889, -0.01643295, -0.02901719, -0...3, 0.03521425, 0.02260914, 0.00967873])], 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([[-0.03808378, -0.043767 , -0.0483224 , .... 0.03521425, 0.02260914, -0.00341889]]), 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. , 0.00744121, 0.01445406, 0.020...8415, 0.97693124, 0.9846067 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=607, 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([[-0.03808378, -0.043767 , -0.0483224 , .... 0.03521425, 0.02260914, -0.00341889]]), 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. , 0.00744121, 0.01445406, 0.020...8415, 0.97693124, 0.9846067 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 607, 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>