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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:26:31

Orbital Elements for BU106AB
WDS: BU106AB WDS ID/Discoverer
P: 614.000 Orbital period (years)
a: 1.587 Semi-major axis (arcseconds)
i: 52.9 Inclination (degrees)
Ω: 46.5 Longitude of ascending node (degrees)
T: 1655.000 Epoch of periastron passage (year)
e: 0.65 Eccentricity
ω: 116.5 Longitude of periastron (degrees)
Start-Year: 1718.0 Year
End-Year: 2332.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU106AB
Position: 144919.09-140856.3 Epoch-2000 right ascension and declination
WDS-ID: 14493-1409 WDS designation
Discoverer Code: BU106AB Discover designation and components
ADS number: 9396 Aitken Double Star catalog
HD number: 130559 HD catalog number
Hipparcos number: 72489 Hipparcos catalog number
V1: 5.61 Magnitude of the primary
V2: 6.62 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU106AB


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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:26:31 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>
    956 
    957 # Smooth curve if necessary
=>  958 xa_smooth, ya_smooth = Q_get_smoothed_orbit(xa_list, ya_list)
    959 plt.plot(xa_smooth, ya_smooth, label=f'Orbit of {wds}', color='#528B8B')
    960 
xa_smooth undefined, ya_smooth undefined, Q_get_smoothed_orbit = <function Q_get_smoothed_orbit>, xa_list = [-0.9859816718348328, -0.9906696222421792, -0.9951636644908141, -0.9994684410697453, -1.0035884407763087, -1.0075280047938477, -1.0112913325260908, -1.01488248719438, -1.018305401204452, -1.0215638812899361, -1.0246616134399533, -1.0276021676184315, -1.030389002282788, -1.0330254687096547, -1.0355148151352571, -1.037860190717967, -1.0400646493303942, -1.042131153188213, -1.0440625763227451, -1.0458617079040808, ...], ya_list = [0.09752802472113577, 0.08600984486837832, 0.07447481865149776, 0.0629256176669744, 0.051364773063992224, 0.03979468379862569, 0.02821762434870111, 0.016635751927476163, 0.005051113231420493, -0.0065343492451207285, -0.018118791298127667, -0.029700461476831794, -0.04127769589538724, -0.05284891336918523, -0.06441261085347715, -0.07596735916363602, -0.0875117989578694, -0.0990446369646399, -0.11056464243829307, -0.12207064382763884, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.9859816718348328, -0.9906696222421792, -0.9951636644908141, -0.9994684410697453, -1.0035884407763087, -1.0075280047938477, -1.0112913325260908, -1.01488248719438, -1.018305401204452, -1.0215638812899361, -1.0246616134399533, -1.0276021676184315, -1.030389002282788, -1.0330254687096547, -1.0355148151352571, -1.037860190717967, -1.0400646493303942, -1.042131153188213, -1.0440625763227451, -1.0458617079040808, ...], y_list=[0.09752802472113577, 0.08600984486837832, 0.07447481865149776, 0.0629256176669744, 0.051364773063992224, 0.03979468379862569, 0.02821762434870111, 0.016635751927476163, 0.005051113231420493, -0.0065343492451207285, -0.018118791298127667, -0.029700461476831794, -0.04127769589538724, -0.05284891336918523, -0.06441261085347715, -0.07596735916363602, -0.0875117989578694, -0.0990446369646399, -0.11056464243829307, -0.12207064382763884, ...])
    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([-1.02156388e+00, -1.02466161e+00, -1.0276....01129133e+00, -1.01488249e+00, -1.01830540e+00]), y = array([-0.00653435, -0.01811879, -0.02970046, -0...03979468, 0.02821762, 0.01663575, 0.00505111]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.02156388e+00, -1.02466161e+00, -1.0276....01129133e+00, -1.01488249e+00, -1.01830540e+00]), array([-0.00653435, -0.01811879, -0.02970046, -0...03979468, 0.02821762, 0.01663575, 0.00505111])], 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([-1.02156388e+00, -1.02466161e+00, -1.0276....01129133e+00, -1.01488249e+00, -1.01830540e+00]), array([-0.00653435, -0.01811879, -0.02970046, -0...03979468, 0.02821762, 0.01663575, 0.00505111])], 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([[-1.02156388, -1.02466161, -1.02760217, .... 0.02821762, 0.01663575, -0.00653435]]), 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. , 0.00172195, 0.00343782, 0.005... 0.99304793, 0.994796 , 0.99653725, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=621, 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([[-1.02156388, -1.02466161, -1.02760217, .... 0.02821762, 0.01663575, -0.00653435]]), 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. , 0.00172195, 0.00343782, 0.005... 0.99304793, 0.994796 , 0.99653725, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 621, 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>