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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:35:18

Orbital Elements for STF1130
WDS: STF1130 WDS ID/Discoverer
P: 1000.000 Orbital period (years)
a: 1.86 Semi-major axis (arcseconds)
i: 52.3 Inclination (degrees)
Ω: 328.6 Longitude of ascending node (degrees)
T: 1981.090 Epoch of periastron passage (year)
e: 0.811 Eccentricity
ω: 346.1 Longitude of periastron (degrees)
Start-Year: 1525.0 Year
End-Year: 2525.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1130
Position: 074142.35+094217.3 Epoch-2000 right ascension and declination
WDS-ID: 07417+0942 WDS designation
Discoverer Code: STF1130 Discover designation and components
ADS number: 6291 Aitken Double Star catalog
HD number: 61886 HD catalog number
Hipparcos number: 37484 Hipparcos catalog number
V1: 8.76 Magnitude of the primary
V2: 9.48 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1995 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1130
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:35:18 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 = [-2.0492281862169817, -2.0471677649624005, -2.04509351214008, -2.0430054315236075, -2.0409035267636257, -2.038787801387953, -2.0366582588016895, -2.034514902287319, -2.032357735004798, -2.03018675999166, -2.0280019801630913, -2.025803398312012, -2.0235910171091542, -2.0213648391031254, -2.0191248667204684, -2.0168711022657315, -2.0146035479215105, -2.0123222057484895, -2.010027077685493, -2.0077181655495213, ...], y_list = [-2.601962397177606, -2.603141300918739, -2.604302616686737, -2.60544632359389, -2.6065724005574116, -2.6076808262984192, -2.608771579340914, -2.6098446380107383, -2.6108999804345543, -2.611937584538756, -2.6129574280484054, -2.613959488486155, -2.6149437431711386, -2.615910169217861, -2.6168587435350767, -2.61778944282464, -2.6187022435803553, -2.6195971220868173, -2.6204740544182172, -2.6213330164371453, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-2.0492281862169817, -2.0471677649624005, -2.04509351214008, -2.0430054315236075, -2.0409035267636257, -2.038787801387953, -2.0366582588016895, -2.034514902287319, -2.032357735004798, -2.03018675999166, -2.0280019801630913, -2.025803398312012, -2.0235910171091542, -2.0213648391031254, -2.0191248667204684, -2.0168711022657315, -2.0146035479215105, -2.0123222057484895, -2.010027077685493, -2.0077181655495213, ...], y_list=[-2.601962397177606, -2.603141300918739, -2.604302616686737, -2.60544632359389, -2.6065724005574116, -2.6076808262984192, -2.608771579340914, -2.6098446380107383, -2.6108999804345543, -2.611937584538756, -2.6129574280484054, -2.613959488486155, -2.6149437431711386, -2.615910169217861, -2.6168587435350767, -2.61778944282464, -2.6187022435803553, -2.6195971220868173, -2.6204740544182172, -2.6213330164371453, ...])
    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([-0.8002191 , -0.81232284, -0.82430735, ..., -0.76317011, -0.77564503, -0.78799392]), y = array([-0.00972615, -0.0195916 , -0.02945418, ..., 0.0198729 , 0.01000765, 0.00014077]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.8002191 , -0.81232284, -0.82430735, ..., -0.76317011, -0.77564503, -0.78799392]), array([-0.00972615, -0.0195916 , -0.02945418, ..., 0.0198729 , 0.01000765, 0.00014077])], 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([-0.8002191 , -0.81232284, -0.82430735, ..., -0.76317011, -0.77564503, -0.78799392]), array([-0.00972615, -0.0195916 , -0.02945418, ..., 0.0198729 , 0.01000765, 0.00014077])], 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([[-0.8002191 , -0.81232284, -0.82430735, .... 0.0198729 , 0.01000765, -0.00972615]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0. , 0.0018792 , 0.00374707, ..., 0.99429308, 0.99620709, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1007, 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([[-0.8002191 , -0.81232284, -0.82430735, .... 0.0198729 , 0.01000765, -0.00972615]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0. , 0.0018792 , 0.00374707, ..., 0.99429308, 0.99620709, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1007, 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>