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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:44:05

Orbital Elements for A2338
WDS: A2338 WDS ID/Discoverer
P: 180.000 Orbital period (years)
a: 0.308 Semi-major axis (arcseconds)
i: 38.3 Inclination (degrees)
Ω: 157.3 Longitude of ascending node (degrees)
T: 2005.980 Epoch of periastron passage (year)
e: 0.736 Eccentricity
ω: 119.3 Longitude of periastron (degrees)
Start-Year: 1935.0 Year
End-Year: 2115.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2338
Position: 025111.57+014049.5 Epoch-2000 right ascension and declination
WDS-ID: 02512+0141 WDS designation
Discoverer Code: A2338 Discover designation and components
ADS number: 2177 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 13302 Hipparcos catalog number
V1: 9.9 Magnitude of the primary
V2: 10.6 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2015 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A2338
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:44:05 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 = [-0.41853134892475635, -0.41642983109230225, -0.41422049138335626, -0.4119026965270928, -0.40947577438243465, -0.4069390127849584, -0.4042916583090327, -0.401532914940295, -0.39866194252106635, -0.39567785565089053, -0.39257972150428533, -0.38936655840367884, -0.38603733387575906, -0.3825909626487766, -0.379026304509725, -0.3753421620115819, -0.37153727801995534, -0.36761033308757385, -0.363559942644087, -0.3593846539875941, ...], y_list = [-0.1708074207339022, -0.1741530142437795, -0.17745351412846377, -0.18070754931673141, -0.18391370653120057, -0.1870705275299108, -0.19017650617090653, -0.19323008528320512, -0.1962296534599992, -0.19917354104216442, -0.20206001687301423, -0.20488728385088698, -0.2076534745971132, -0.21035664671056917, -0.21299477765254982, -0.21556575922434698, -0.2180673915954727, -0.2204973768354237, -0.22285331189610683, -0.22513268098545494, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.41853134892475635, -0.41642983109230225, -0.41422049138335626, -0.4119026965270928, -0.40947577438243465, -0.4069390127849584, -0.4042916583090327, -0.401532914940295, -0.39866194252106635, -0.39567785565089053, -0.39257972150428533, -0.38936655840367884, -0.38603733387575906, -0.3825909626487766, -0.379026304509725, -0.3753421620115819, -0.37153727801995534, -0.36761033308757385, -0.363559942644087, -0.3593846539875941, ...], y_list=[-0.1708074207339022, -0.1741530142437795, -0.17745351412846377, -0.18070754931673141, -0.18391370653120057, -0.1870705275299108, -0.19017650617090653, -0.19323008528320512, -0.1962296534599992, -0.19917354104216442, -0.20206001687301423, -0.20488728385088698, -0.2076534745971132, -0.21035664671056917, -0.21299477765254982, -0.21556575922434698, -0.2180673915954727, -0.2204973768354237, -0.22285331189610683, -0.22513268098545494, ...])
    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([-0.41292624, -0.41520907, -0.41738195, -0...1, -0.40541026, -0.40802766, -0.41053271]), y = array([-4.10214999e-03, -8.38512431e-03, -1.2665...58e-03, 4.46594142e-03, 1.81921726e-04]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.41292624, -0.41520907, -0.41738195, -0...1, -0.40541026, -0.40802766, -0.41053271]), array([-4.10214999e-03, -8.38512431e-03, -1.2665...58e-03, 4.46594142e-03, 1.81921726e-04])], 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([-0.41292624, -0.41520907, -0.41738195, -0...1, -0.40541026, -0.40802766, -0.41053271]), array([-4.10214999e-03, -8.38512431e-03, -1.2665...58e-03, 4.46594142e-03, 1.81921726e-04])], 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([[-0.41292624, -0.41520907, -0.41738195, -... 0.00874873, 0.00446594, -0.00410215]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.00336898, 0.00670137, 0.009...4052, 0.98966486, 0.99314901, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=187, 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([[-0.41292624, -0.41520907, -0.41738195, -... 0.00874873, 0.00446594, -0.00410215]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.00336898, 0.00670137, 0.009...4052, 0.98966486, 0.99314901, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 187, 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>