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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:39:05

Orbital Elements for STF1216
WDS: STF1216 WDS ID/Discoverer
P: 402.000 Orbital period (years)
a: 0.565 Semi-major axis (arcseconds)
i: 31.7 Inclination (degrees)
Ω: 264.1 Longitude of ascending node (degrees)
T: 2322.000 Epoch of periastron passage (year)
e: 0.109 Eccentricity
ω: 310.8 Longitude of periastron (degrees)
Start-Year: 1824.0 Year
End-Year: 2226.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1216
Position: 082120.28-013607.3 Epoch-2000 right ascension and declination
WDS-ID: 08213-0136 WDS designation
Discoverer Code: STF1216 Discover designation and components
ADS number: 6762 Aitken Double Star catalog
HD number: 70340 HD catalog number
Hipparcos number: 40941 Hipparcos catalog number
V1: 6.85 Magnitude of the primary
V2: 7.88 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1216
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:39:05 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 = [-0.5033317637226074, -0.4984146839139708, -0.493376760224496, -0.48821860335183265, -0.48294086068543696, -0.4775442168496102, -0.472029394242767, -0.46639715357211714, -0.4606482943829311, -0.45478365558152345, -0.4488041159510399, -0.4427105946591171, -0.43650405175643486, -0.43018548866516404, -0.42375594865624994, -0.4172165173144721, -0.4105683229901593, -0.4038125372364272, -0.3969503752307471, -0.3899830961796605, ...], y_list = [-0.20766037518356587, -0.21401505944048824, -0.22031785261535558, -0.22656695377757569, -0.23276055711400995, -0.23889685241538172, -0.24497402558319706, -0.2509902591575586, -0.2569437328662214, -0.2628326241952169, -0.26865510898137973, -0.2744093620270641, -0.280093557737334, -0.28570587077987164, -0.2912444767678504, -0.2967075529659573, -0.3020932790197484, -0.30739983770847185, -0.312625415721478, -0.31776820445827564, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.5033317637226074, -0.4984146839139708, -0.493376760224496, -0.48821860335183265, -0.48294086068543696, -0.4775442168496102, -0.472029394242767, -0.46639715357211714, -0.4606482943829311, -0.45478365558152345, -0.4488041159510399, -0.4427105946591171, -0.43650405175643486, -0.43018548866516404, -0.42375594865624994, -0.4172165173144721, -0.4105683229901593, -0.4038125372364272, -0.3969503752307471, -0.3899830961796605, ...], y_list=[-0.20766037518356587, -0.21401505944048824, -0.22031785261535558, -0.22656695377757569, -0.23276055711400995, -0.23889685241538172, -0.24497402558319706, -0.2509902591575586, -0.2569437328662214, -0.2628326241952169, -0.26865510898137973, -0.2744093620270641, -0.280093557737334, -0.28570587077987164, -0.2912444767678504, -0.2967075529659573, -0.3020932790197484, -0.30739983770847185, -0.312625415721478, -0.31776820445827564, ...])
    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([-0.59297234, -0.5918048 , -0.59051247, -0...1, -0.59572904, -0.59493417, -0.59401537]), y = array([-0.00151789, -0.00863094, -0.01574218, -0...2, 0.01981726, 0.0127077 , 0.00559549]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.59297234, -0.5918048 , -0.59051247, -0...1, -0.59572904, -0.59493417, -0.59401537]), array([-0.00151789, -0.00863094, -0.01574218, -0...2, 0.01981726, 0.0127077 , 0.00559549])], 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([-0.59297234, -0.5918048 , -0.59051247, -0...1, -0.59572904, -0.59493417, -0.59401537]), array([-0.00151789, -0.00863094, -0.01574218, -0...2, 0.01981726, 0.0127077 , 0.00559549])], 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([[-0.59297234, -0.5918048 , -0.59051247, -... 0.01981726, 0.0127077 , -0.00151789]]), w=array([1., 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. , 0.00219728, 0.0044005 , 0.006...6628, 0.99344188, 0.99562258, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=409, 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([[-0.59297234, -0.5918048 , -0.59051247, -... 0.01981726, 0.0127077 , -0.00151789]]), w = array([1., 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. , 0.00219728, 0.0044005 , 0.006...6628, 0.99344188, 0.99562258, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 409, 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>