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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:09:01

Orbital Elements for I215
WDS: I215 WDS ID/Discoverer
P: 156.000 Orbital period (years)
a: 0.781 Semi-major axis (arcseconds)
i: 112.4 Inclination (degrees)
Ω: 270.3 Longitude of ascending node (degrees)
T: 2018.800 Epoch of periastron passage (year)
e: 0.386 Eccentricity
ω: 282.7 Longitude of periastron (degrees)
Start-Year: 1947.0 Year
End-Year: 2103.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I215
Position: 120146.09-343901.1 Epoch-2000 right ascension and declination
WDS-ID: 12018-3439 WDS designation
Discoverer Code: I215 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 104471 HD catalog number
Hipparcos number: 58669 Hipparcos catalog number
V1: 7.27 Magnitude of the primary
V2: 8.48 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for I215
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:09:01 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 = [-0.3592940358782253, -0.37848234699413014, -0.39743577037623623, -0.4161411884744875, -0.4345853126470244, -0.4527546631292696, -0.47063554812810493, -0.48821404235485233, -0.5054759649287724, -0.5224068565810388, -0.5389919560873271, -0.555216175855179, -0.5710640765903557, -0.5865198409643971, -0.6015672462038045, -0.6161896355195828, -0.6303698882945753, -0.6440903889451874, -0.6573329943739491, -0.6700789999300948, ...], y_list = [-0.3887443176263377, -0.38547102558224255, -0.38195852112481116, -0.37820768259035015, -0.3742193827351163, -0.3699944918219525, -0.36553388104041656, -0.3608384262246028, -0.35590901189830026, -0.35074653568079184, -0.34535191309063995, -0.3397260827893238, -0.33387001231162144, -0.3277847043352716, -0.3214712035487453, -0.31493060418304636, -0.3081640582814052, -0.30117278478968035, -0.2939580795603473, -0.2865213263743107, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.3592940358782253, -0.37848234699413014, -0.39743577037623623, -0.4161411884744875, -0.4345853126470244, -0.4527546631292696, -0.47063554812810493, -0.48821404235485233, -0.5054759649287724, -0.5224068565810388, -0.5389919560873271, -0.555216175855179, -0.5710640765903557, -0.5865198409643971, -0.6015672462038045, -0.6161896355195828, -0.6303698882945753, -0.6440903889451874, -0.6573329943739491, -0.6700789999300948, ...], y_list=[-0.3887443176263377, -0.38547102558224255, -0.38195852112481116, -0.37820768259035015, -0.3742193827351163, -0.3699944918219525, -0.36553388104041656, -0.3608384262246028, -0.35590901189830026, -0.35074653568079184, -0.34535191309063995, -0.3397260827893238, -0.33387001231162144, -0.3277847043352716, -0.3214712035487453, -0.31493060418304636, -0.3081640582814052, -0.30117278478968035, -0.2939580795603473, -0.2865213263743107, ...])
    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([-0.72311193, -0.73551646, -0.74649497, -0...8, -0.67682312, -0.69381742, -0.70922964]), y = array([-0.00090097, -0.01285572, -0.02478575, -0...5, 0.0348673 , 0.02298769, 0.0110554 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.72311193, -0.73551646, -0.74649497, -0...8, -0.67682312, -0.69381742, -0.70922964]), array([-0.00090097, -0.01285572, -0.02478575, -0...5, 0.0348673 , 0.02298769, 0.0110554 ])], 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([-0.72311193, -0.73551646, -0.74649497, -0...8, -0.67682312, -0.69381742, -0.70922964]), array([-0.00090097, -0.01285572, -0.02478575, -0...5, 0.0348673 , 0.02298769, 0.0110554 ])], 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([[-0.72311193, -0.73551646, -0.74649497, -... 0.0348673 , 0.02298769, -0.00090097]]), 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. , 0.0051485 , 0.00999372, 0.014...1758, 0.98250675, 0.98870339, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=163, 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([[-0.72311193, -0.73551646, -0.74649497, -... 0.0348673 , 0.02298769, -0.00090097]]), 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. , 0.0051485 , 0.00999372, 0.014...1758, 0.98250675, 0.98870339, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 163, 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>