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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:43:44

Orbital Elements for BU83AA,AB
WDS: BU83AA,AB WDS ID/Discoverer
P: 36.000 Orbital period (years)
a: 0.08 Semi-major axis (arcseconds)
i: 50.0 Inclination (degrees)
Ω: 110.0 Longitude of ascending node (degrees)
T: 1900.500 Epoch of periastron passage (year)
e: 0.15 Eccentricity
ω: 280.0 Longitude of periastron (degrees)
Start-Year: 2007.0 Year
End-Year: 2043.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU83AA,AB
Position: 024559.63-045723.2 Epoch-2000 right ascension and declination
WDS-ID: 02460-0457 WDS designation
Discoverer Code: BU83AA,AB Discover designation and components
ADS number: 2111 Aitken Double Star catalog
HD number: 17251 HD catalog number
Hipparcos number: 12912 Hipparcos catalog number
V1: 7.53 Magnitude of the primary
V2: 9.39 Magnitude of the secondary
Equinox: 1900 Equinox
Date: 1968 Date of last observation
Orbit grade: 9 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU83AA,AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:43:44 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 = [-0.0031794603750593844, -0.018468682898612403, -0.03284842362128239, -0.04561419416080802, -0.05618791535966866, -0.06417059157689232, -0.06935882216416443, -0.07172869842092205, -0.07139964034825709, -0.06859194313416558, -0.06358785249586105, -0.056700867840170456, -0.0482541152824537, -0.03856658355887899, -0.02794533492978223, -0.016681868793584572, -0.005051171090068201, 0.006687621060855534, 0.018289675991404224, 0.029522536892545925, ...], y_list = [0.04496919105036803, 0.039764997660130495, 0.032606063570133965, 0.023843117350040733, 0.013930360121346958, 0.0033703272844179833, -0.007341669371150309, -0.017760511652446992, -0.027516052757950094, -0.03632108324824134, -0.0439675165948053, -0.05031625914577237, -0.05528495275483108, -0.05883614117057315, -0.06096709304877002, -0.06170167320598532, -0.061084207037732326, -0.05917509384651433, -0.056047879134832494, -0.05178751863326225, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.0031794603750593844, -0.018468682898612403, -0.03284842362128239, -0.04561419416080802, -0.05618791535966866, -0.06417059157689232, -0.06935882216416443, -0.07172869842092205, -0.07139964034825709, -0.06859194313416558, -0.06358785249586105, -0.056700867840170456, -0.0482541152824537, -0.03856658355887899, -0.02794533492978223, -0.016681868793584572, -0.005051171090068201, 0.006687621060855534, 0.018289675991404224, 0.029522536892545925, ...], y_list=[0.04496919105036803, 0.039764997660130495, 0.032606063570133965, 0.023843117350040733, 0.013930360121346958, 0.0033703272844179833, -0.007341669371150309, -0.017760511652446992, -0.027516052757950094, -0.03632108324824134, -0.0439675165948053, -0.05031625914577237, -0.05528495275483108, -0.05883614117057315, -0.06096709304877002, -0.06170167320598532, -0.061084207037732326, -0.05917509384651433, -0.056047879134832494, -0.05178751863326225, ...])
    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([-0.06935882, -0.0717287 , -0.07139964, -0...2, -0.04561419, -0.05618792, -0.06417059]), y = array([-0.00734167, -0.01776051, -0.02751605, -0...6, 0.02384312, 0.01393036, 0.00337033]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.06935882, -0.0717287 , -0.07139964, -0...2, -0.04561419, -0.05618792, -0.06417059]), array([-0.00734167, -0.01776051, -0.02751605, -0...6, 0.02384312, 0.01393036, 0.00337033])], 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([-0.06935882, -0.0717287 , -0.07139964, -0...2, -0.04561419, -0.05618792, -0.06417059]), array([-0.00734167, -0.01776051, -0.02751605, -0...6, 0.02384312, 0.01393036, 0.00337033])], 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([[-0.06935882, -0.0717287 , -0.07139964, -... 0.02384312, 0.01393036, -0.00734167]]), 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. , 0.02580654, 0.04938171, 0.071...6998, 0.90456722, 0.93957259, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=43, 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([[-0.06935882, -0.0717287 , -0.07139964, -... 0.02384312, 0.01393036, -0.00734167]]), 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. , 0.02580654, 0.04938171, 0.071...6998, 0.90456722, 0.93957259, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 43, 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>