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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:27:22

Orbital Elements for I226AB
WDS: I226AB WDS ID/Discoverer
P: 3556.000 Orbital period (years)
a: 3.56 Semi-major axis (arcseconds)
i: 55.0 Inclination (degrees)
Ω: 265.0 Longitude of ascending node (degrees)
T: 502.000 Epoch of periastron passage (year)
e: 0.13 Eccentricity
ω: 145.3 Longitude of periastron (degrees)
Start-Year: 247.0 Year
End-Year: 3803.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I226AB
Position: 145425.30-340834.0 Epoch-2000 right ascension and declination
WDS-ID: 14544-3409 WDS designation
Discoverer Code: I226AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 131399 HD catalog number
Hipparcos number: 72940 Hipparcos catalog number
V1: 7.09 Magnitude of the primary
V2: 11.16 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2016 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for I226AB
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:27:22 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 = [-1.0275470807158544, -1.0340279343109795, -1.0405041573792935, -1.0469757189195084, -1.0534425879320468, -1.0599047334193263, -1.0663621243860777, -1.0728147298396382, -1.0792625187902207, -1.0857054602512588, -1.0921435232396486, -1.0985766767761067, -1.1050048898854075, -1.1114281315967272, -1.117846370943937, -1.1242595769658823, -1.1306677187067193, -1.1370707652161705, -1.1434686855498735, -1.1498614487696392, ...], y_list = [1.7762869390064666, 1.775096328769128, 1.7738977693993765, 1.7726912628550557, 1.771476811143915, 1.7702544163236635, 1.7690240805020236, 1.7677858058367846, 1.7665395945358617, 1.7652854488573408, 1.7640233711095397, 1.7627533636510488, 1.7614754288907966, 1.7601895692880865, 1.7588957873526523, 1.75759408564471, 1.7562844667749975, 1.7549669334048321, 1.7536414882461495, 1.7523081340615583, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-1.0275470807158544, -1.0340279343109795, -1.0405041573792935, -1.0469757189195084, -1.0534425879320468, -1.0599047334193263, -1.0663621243860777, -1.0728147298396382, -1.0792625187902207, -1.0857054602512588, -1.0921435232396486, -1.0985766767761067, -1.1050048898854075, -1.1114281315967272, -1.117846370943937, -1.1242595769658823, -1.1306677187067193, -1.1370707652161705, -1.1434686855498735, -1.1498614487696392, ...], y_list=[1.7762869390064666, 1.775096328769128, 1.7738977693993765, 1.7726912628550557, 1.771476811143915, 1.7702544163236635, 1.7690240805020236, 1.7677858058367846, 1.7665395945358617, 1.7652854488573408, 1.7640233711095397, 1.7627533636510488, 1.7614754288907966, 1.7601895692880865, 1.7588957873526523, 1.75759408564471, 1.7562844667749975, 1.7549669334048321, 1.7536414882461495, 1.7523081340615583, ...])
    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([-3.17306932, -3.17291425, -3.17274552, ..., -3.17345252, -3.17333846, -3.17321073]), y = array([-0.00305362, -0.00706701, -0.01108038, ..., 0.00898659, 0.0049732 , 0.0009598 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-3.17306932, -3.17291425, -3.17274552, ..., -3.17345252, -3.17333846, -3.17321073]), array([-0.00305362, -0.00706701, -0.01108038, ..., 0.00898659, 0.0049732 , 0.0009598 ])], 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([-3.17306932, -3.17291425, -3.17274552, ..., -3.17345252, -3.17333846, -3.17321073]), array([-0.00305362, -0.00706701, -0.01108038, ..., 0.00898659, 0.0049732 , 0.0009598 ])], 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([[-3.17306932e+00, -3.17291425e+00, -3.172...98658838e-03, 4.97320270e-03, -3.05361567e-03]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 2.24904492e-04, 4.4983810... 9.99325446e-01, 9.99550273e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=3563, 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([[-3.17306932e+00, -3.17291425e+00, -3.172...98658838e-03, 4.97320270e-03, -3.05361567e-03]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 2.24904492e-04, 4.4983810... 9.99325446e-01, 9.99550273e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 3563, 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>