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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:31:03

Orbital Elements for A948AB
WDS: A948AB WDS ID/Discoverer
P: 480.000 Orbital period (years)
a: 0.54 Semi-major axis (arcseconds)
i: 67.4 Inclination (degrees)
Ω: 17.2 Longitude of ascending node (degrees)
T: 1883.000 Epoch of periastron passage (year)
e: 0.629 Eccentricity
ω: 309.8 Longitude of periastron (degrees)
Start-Year: 1785.0 Year
End-Year: 2265.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A948AB
Position: 014620.17+443848.6 Epoch-2000 right ascension and declination
WDS-ID: 01463+4439 WDS designation
Discoverer Code: A948AB Discover designation and components
ADS number: 1392 Aitken Double Star catalog
HD number: 10765 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.8 Magnitude of the primary
V2: 10.3 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1996 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A948AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:31:03 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 = [0.1378936902592233, 0.139061699083383, 0.14021541646160132, 0.14135447812775156, 0.1424785093562721, 0.14358712454992165, 0.1446799268078217, 0.14575650747268315, 0.14681644565603724, 0.14785930774022388, 0.14888464685579417, 0.14989200233292657, 0.1508808991253345, 0.151850847205066, 0.1528013409264817, 0.15373185835759046, 0.15464186057679852, 0.1555307909330051, 0.1563980742668342, 0.157243116090654, ...], y_list = [-0.6170364481592576, -0.6139933202603706, -0.6108870942936915, -0.6077170190923672, -0.6044823268828413, -0.60118223281038, -0.5978159344493362, -0.5943826112977298, -0.5908814242557289, -0.5873115150876197, -0.5836720058668761, -0.5799619984039359, -0.5761805736563489, -0.5723267911209445, -0.5683996882077489, -0.5643982795953845, -0.5603215565677723, -0.5561684863319959, -0.5519380113172808, -0.5476290484551262, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.1378936902592233, 0.139061699083383, 0.14021541646160132, 0.14135447812775156, 0.1424785093562721, 0.14358712454992165, 0.1446799268078217, 0.14575650747268315, 0.14681644565603724, 0.14785930774022388, 0.14888464685579417, 0.14989200233292657, 0.1508808991253345, 0.151850847205066, 0.1528013409264817, 0.15373185835759046, 0.15464186057679852, 0.1555307909330051, 0.1563980742668342, 0.157243116090654, ...], y_list=[-0.6170364481592576, -0.6139933202603706, -0.6108870942936915, -0.6077170190923672, -0.6044823268828413, -0.60118223281038, -0.5978159344493362, -0.5943826112977298, -0.5908814242557289, -0.5873115150876197, -0.5836720058668761, -0.5799619984039359, -0.5761805736563489, -0.5723267911209445, -0.5683996882077489, -0.5643982795953845, -0.5603215565677723, -0.5561684863319959, -0.5519380113172808, -0.5476290484551262, ...])
    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([-0.22997689, -0.2302983 , -0.23058833, -0...2, -0.22881802, -0.22923741, -0.22962348]), y = array([-4.66811412e-03, -9.63307253e-03, -1.4596...55e-02, 5.26305232e-03, 2.97491529e-04]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.22997689, -0.2302983 , -0.23058833, -0...2, -0.22881802, -0.22923741, -0.22962348]), array([-4.66811412e-03, -9.63307253e-03, -1.4596...55e-02, 5.26305232e-03, 2.97491529e-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([-0.22997689, -0.2302983 , -0.23058833, -0...2, -0.22881802, -0.22923741, -0.22962348]), array([-4.66811412e-03, -9.63307253e-03, -1.4596...55e-02, 5.26305232e-03, 2.97491529e-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([[-2.29976895e-01, -2.30298302e-01, -2.305...e-02, 5.26305232e-03, -4.66811412e-03]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.00229039, 0.0045793 , 0.006...2753, 0.99312188, 0.99541555, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=487, 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([[-2.29976895e-01, -2.30298302e-01, -2.305...e-02, 5.26305232e-03, -4.66811412e-03]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.00229039, 0.0045793 , 0.006...2753, 0.99312188, 0.99541555, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 487, 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>