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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:34:48

Orbital Elements for HDS2240
WDS: HDS2240 WDS ID/Discoverer
P: 80.000 Orbital period (years)
a: 0.191 Semi-major axis (arcseconds)
i: 0.0 Inclination (degrees)
Ω: 182.8 Longitude of ascending node (degrees)
T: 2020.490 Epoch of periastron passage (year)
e: 0.83 Eccentricity
ω: 0.0 Longitude of periastron (degrees)
Start-Year: 1985.0 Year
End-Year: 2065.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2240
Position: 155424.71-613105.8 Epoch-2000 right ascension and declination
WDS-ID: 15544-6131 WDS designation
Discoverer Code: HDS2240 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 141806 HD catalog number
Hipparcos number: 77890 Hipparcos catalog number
V1: 10.38 Magnitude of the primary
V2: 10.64 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2020 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS2240
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:34:48 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 = [-0.03742434468091138, -0.04184570927726886, -0.04622328709452573, -0.05055174368396434, -0.05482549283724228, -0.05903865008359104, -0.06318498047928861, -0.06725783936488777, -0.0712501044728447, -0.07515409738718262, -0.07896149185872149, -0.08266320582378883, -0.08624927316950771, -0.08970868973805186, -0.09302922748707129, -0.0961972070812413, -0.09919721751708122, -0.10201176643297277, -0.10462083893238514, -0.10700133392230339, ...], y_list = [0.34452605203241843, 0.34253382477009897, 0.3401832686962527, 0.3374713046213876, 0.33439423839036897, 0.3309477274984446, 0.32712674081756665, 0.3229255105059945, 0.3183374749484754, 0.31335521129643673, 0.3079703558316064, 0.3021735099410359, 0.2959541288190333, 0.2893003899769287, 0.2821990359938023, 0.2746351872475842, 0.26659211653937914, 0.2580509766015906, 0.24899046824045346, 0.23938643298947396, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.03742434468091138, -0.04184570927726886, -0.04622328709452573, -0.05055174368396434, -0.05482549283724228, -0.05903865008359104, -0.06318498047928861, -0.06725783936488777, -0.0712501044728447, -0.07515409738718262, -0.07896149185872149, -0.08266320582378883, -0.08624927316950771, -0.08970868973805186, -0.09302922748707129, -0.0961972070812413, -0.09919721751708122, -0.10201176643297277, -0.10462083893238514, -0.10700133392230339, ...], y_list=[0.34452605203241843, 0.34253382477009897, 0.3401832686962527, 0.3374713046213876, 0.33439423839036897, 0.3309477274984446, 0.32712674081756665, 0.3229255105059945, 0.3183374749484754, 0.31335521129643673, 0.3079703558316064, 0.3021735099410359, 0.2959541288190333, 0.2893003899769287, 0.2821990359938023, 0.2746351872475842, 0.26659211653937914, 0.2580509766015906, 0.24899046824045346, 0.23938643298947396, ...])
    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([-0.05568531, -0.02164487, 0.025215 , 0...6, -0.09763484, -0.08876641, -0.07580055]), y = array([-0.00673856, -0.02904257, -0.0264032 , -0...9, 0.06510311, 0.0429148 , 0.01883113]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.05568531, -0.02164487, 0.025215 , 0...6, -0.09763484, -0.08876641, -0.07580055]), array([-0.00673856, -0.02904257, -0.0264032 , -0...9, 0.06510311, 0.0429148 , 0.01883113])], 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([-0.05568531, -0.02164487, 0.025215 , 0...6, -0.09763484, -0.08876641, -0.07580055]), array([-0.00673856, -0.02904257, -0.0264032 , -0...9, 0.06510311, 0.0429148 , 0.01883113])], 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([[-0.05568531, -0.02164487, 0.025215 , ... 0.06510311, 0.0429148 , -0.00673856]]), 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. , 0.04278247, 0.09212209, 0.134...7882, 0.91215826, 0.9372779 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=87, 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([[-0.05568531, -0.02164487, 0.025215 , ... 0.06510311, 0.0429148 , -0.00673856]]), 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. , 0.04278247, 0.09212209, 0.134...7882, 0.91215826, 0.9372779 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 87, 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>