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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:44:20

Orbital Elements for STT325
WDS: STT325 WDS ID/Discoverer
P: 2838.000 Orbital period (years)
a: 3.34 Semi-major axis (arcseconds)
i: 77.9 Inclination (degrees)
Ω: 6.2 Longitude of ascending node (degrees)
T: 2130.000 Epoch of periastron passage (year)
e: 0.662 Eccentricity
ω: 348.8 Longitude of periastron (degrees)
Start-Year: 606.0 Year
End-Year: 3444.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT325
Position: 171259.30+074457.5 Epoch-2000 right ascension and declination
WDS-ID: 17130+0745 WDS designation
Discoverer Code: STT325 Discover designation and components
ADS number: 10398 Aitken Double Star catalog
HD number: 155714 HD catalog number
Hipparcos number: 84230 Hipparcos catalog number
V1: 7.15 Magnitude of the primary
V2: 8.94 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STT325
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:44:20 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 = [0.28249617785599324, 0.2832840430505111, 0.28407160228939865, 0.28485885478977935, 0.28564579976880167, 0.2864324364436344, 0.2872187640314732, 0.2880047817495235, 0.2887904888150025, 0.2895758844451387, 0.290360967857157, 0.2911457382682862, 0.29193019489574573, 0.292714336956742, 0.29349816366847115, 0.2942816742481105, 0.29506486791281045, 0.2958477438796948, 0.29663030136585755, 0.29741253958835373, ...], y_list = [-5.346164714026399, -5.347339134732536, -5.348507780144593, -5.349670650275217, -5.350827745131117, -5.351979064713046, -5.353124609015824, -5.354264378028324, -5.355398371733471, -5.356526590108252, -5.357649033123703, -5.358765700744923, -5.3598765929310614, -5.360981709635313, -5.362081050804944, -5.363174616381264, -5.364262406299635, -5.365344420489472, -5.366420658874248, -5.367491121371481, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.28249617785599324, 0.2832840430505111, 0.28407160228939865, 0.28485885478977935, 0.28564579976880167, 0.2864324364436344, 0.2872187640314732, 0.2880047817495235, 0.2887904888150025, 0.2895758844451387, 0.290360967857157, 0.2911457382682862, 0.29193019489574573, 0.292714336956742, 0.29349816366847115, 0.2942816742481105, 0.29506486791281045, 0.2958477438796948, 0.29663030136585755, 0.29741253958835373, ...], y_list=[-5.346164714026399, -5.347339134732536, -5.348507780144593, -5.349670650275217, -5.350827745131117, -5.351979064713046, -5.353124609015824, -5.354264378028324, -5.355398371733471, -5.356526590108252, -5.357649033123703, -5.358765700744923, -5.3598765929310614, -5.360981709635313, -5.362081050804944, -5.363174616381264, -5.364262406299635, -5.365344420489472, -5.366420658874248, -5.367491121371481, ...])
    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([-0.44642952, -0.44687619, -0.44731437, ..., -0.44503782, -0.44551041, -0.44597428]), y = array([-0.00281339, -0.01150801, -0.02020241, ..., 0.0232701 , 0.01457583, 0.00588127]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.44642952, -0.44687619, -0.44731437, ..., -0.44503782, -0.44551041, -0.44597428]), array([-0.00281339, -0.01150801, -0.02020241, ..., 0.0232701 , 0.01457583, 0.00588127])], 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([-0.44642952, -0.44687619, -0.44731437, ..., -0.44503782, -0.44551041, -0.44597428]), array([-0.00281339, -0.01150801, -0.02020241, ..., 0.0232701 , 0.01457583, 0.00588127])], 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([[-0.44642952, -0.44687619, -0.44731437, .... 0.0232701 , 0.01457583, -0.00281339]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 6.34808723e-04, 1.2695700... 9.98095402e-01, 9.98730285e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=2845, 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([[-0.44642952, -0.44687619, -0.44731437, .... 0.0232701 , 0.01457583, -0.00281339]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 6.34808723e-04, 1.2695700... 9.98095402e-01, 9.98730285e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 2845, 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>