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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:51:33

Orbital Elements for BU824
WDS: BU824 WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.474 Semi-major axis (arcseconds)
i: 65.0 Inclination (degrees)
Ω: 164.7 Longitude of ascending node (degrees)
T: 2070.280 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 22.1 Longitude of periastron (degrees)
Start-Year: 1875.0 Year
End-Year: 2175.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU824
Position: 174853.45-015212.9 Epoch-2000 right ascension and declination
WDS-ID: 17489-0152 WDS designation
Discoverer Code: BU824 Discover designation and components
ADS number: 10809 Aitken Double Star catalog
HD number: 162008 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.4 Magnitude of the primary
V2: 9.5 Magnitude of the secondary
Equinox: Equinox
Date: 2021 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for BU824
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:51:33 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 = [0.17407605394212858, 0.1721130886960789, 0.17012280962034002, 0.16810578244243002, 0.1660625624174092, 0.16399369470948433, 0.16189971476069445, 0.15978114864727966, 0.1576385134243141, 0.15547231745915616, 0.15328306075423992, 0.15107123525971405, 0.14883732517641046, 0.14658180724960287, 0.14430515105399508, 0.1420078192703645, 0.13969026795426204, 0.1373529467971592, 0.13499629938041213, 0.1326207634224017, ...], y_list = [0.6398471658143381, 0.642525297120142, 0.6451014640889063, 0.6475762053542099, 0.6499500490483722, 0.6522235129368816, 0.6543971045534344, 0.6564713213352689, 0.6584466507585165, 0.6603235704733184, 0.662102548438489, 0.6637840430555332, 0.6653685033018422, 0.6668563688629235, 0.6682480702635305, 0.6695440289975825, 0.6707446576567775, 0.6718503600578162, 0.6728615313681708, 0.67377855823034, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.17407605394212858, 0.1721130886960789, 0.17012280962034002, 0.16810578244243002, 0.1660625624174092, 0.16399369470948433, 0.16189971476069445, 0.15978114864727966, 0.1576385134243141, 0.15547231745915616, 0.15328306075423992, 0.15107123525971405, 0.14883732517641046, 0.14658180724960287, 0.14430515105399508, 0.1420078192703645, 0.13969026795426204, 0.1373529467971592, 0.13499629938041213, 0.1326207634224017, ...], y_list=[0.6398471658143381, 0.642525297120142, 0.6451014640889063, 0.6475762053542099, 0.6499500490483722, 0.6522235129368816, 0.6543971045534344, 0.6564713213352689, 0.6584466507585165, 0.6603235704733184, 0.662102548438489, 0.6637840430555332, 0.6653685033018422, 0.6668563688629235, 0.6682480702635305, 0.6695440289975825, 0.6707446576567775, 0.6718503600578162, 0.6728615313681708, 0.67377855823034, ...])
    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([-0.1783727 , -0.17795333, -0.17740471, -0...4, -0.17890378, -0.17884328, -0.17866777]), y = array([-0.00714455, -0.01678191, -0.02640703, -0...4, 0.02177158, 0.01213859, 0.00249783]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.1783727 , -0.17795333, -0.17740471, -0...4, -0.17890378, -0.17884328, -0.17866777]), array([-0.00714455, -0.01678191, -0.02640703, -0...4, 0.02177158, 0.01213859, 0.00249783])], 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([-0.1783727 , -0.17795333, -0.17740471, -0...4, -0.17890378, -0.17884328, -0.17866777]), array([-0.00714455, -0.01678191, -0.02640703, -0...4, 0.02177158, 0.01213859, 0.00249783])], 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([[-0.1783727 , -0.17795333, -0.17740471, -... 0.02177158, 0.01213859, -0.00714455]]), 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. , 0.00454605, 0.00908939, 0.013...3662, 0.98637005, 0.99090983, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=307, 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([[-0.1783727 , -0.17795333, -0.17740471, -... 0.02177158, 0.01213859, -0.00714455]]), 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. , 0.00454605, 0.00908939, 0.013...3662, 0.98637005, 0.99090983, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 307, 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>