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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:36:07

Orbital Elements for WRH15AB
WDS: WRH15AB WDS ID/Discoverer
P: 580.000 Orbital period (years)
a: 0.452 Semi-major axis (arcseconds)
i: 117.2 Inclination (degrees)
Ω: 55.4 Longitude of ascending node (degrees)
T: 1954.000 Epoch of periastron passage (year)
e: 0.449 Eccentricity
ω: 321.7 Longitude of periastron (degrees)
Start-Year: 1735.0 Year
End-Year: 2315.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WRH15AB
Position: 074833.65+230827.5 Epoch-2000 right ascension and declination
WDS-ID: 07486+2308 WDS designation
Discoverer Code: WRH15AB Discover designation and components
ADS number: 6378 Aitken Double Star catalog
HD number: 63209 HD catalog number
Hipparcos number: 38106 Hipparcos catalog number
V1: 6.85 Magnitude of the primary
V2: 7.30 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1995 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for WRH15AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:36:07 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 = [0.5402867747790417, 0.5396424083435728, 0.5389741308815542, 0.5382818764554725, 0.5375655785694523, 0.5368251701658177, 0.5360605836217018, 0.5352717507457082, 0.5344586027746272, 0.5336210703702111, 0.532759083616013, 0.5318725720142925, 0.5309614644829938, 0.5300256893527993, 0.5290651743642661, 0.5280798466650471, 0.5270696328072065, 0.5260344587446301, 0.524974249830542, 0.5238889308151301, ...], y_list = [-0.25964911492232357, -0.26101254198970036, -0.26236440379797654, -0.263704593935028, -0.26503300511644995, -0.26634952916962706, -0.26765405701758294, -0.2689464786625839, -0.27022668316950943, -0.27149455864896765, -0.2727499922401683, -0.2739928700935316, -0.2752230773530346, -0.27644049813829397, -0.2776450155263687, -0.27883651153328776, -0.2800148670952875, -0.28117996204976314, -0.2823316751159168, -0.2834698838751063, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.5402867747790417, 0.5396424083435728, 0.5389741308815542, 0.5382818764554725, 0.5375655785694523, 0.5368251701658177, 0.5360605836217018, 0.5352717507457082, 0.5344586027746272, 0.5336210703702111, 0.532759083616013, 0.5318725720142925, 0.5309614644829938, 0.5300256893527993, 0.5290651743642661, 0.5280798466650471, 0.5270696328072065, 0.5260344587446301, 0.524974249830542, 0.5238889308151301, ...], y_list=[-0.25964911492232357, -0.26101254198970036, -0.26236440379797654, -0.263704593935028, -0.26503300511644995, -0.26634952916962706, -0.26765405701758294, -0.2689464786625839, -0.27022668316950943, -0.27149455864896765, -0.2727499922401683, -0.2739928700935316, -0.2752230773530346, -0.27644049813829397, -0.2776450155263687, -0.27883651153328776, -0.2800148670952875, -0.28117996204976314, -0.2823316751159168, -0.2834698838751063, ...])
    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([-0.16615883, -0.1622695 , -0.15827361, -0...6, -0.17715118, -0.17360319, -0.16993792]), y = array([-5.04965293e-03, -1.03711771e-02, -1.5685...52e-02, 5.59989438e-03, 2.75215576e-04]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.16615883, -0.1622695 , -0.15827361, -0...6, -0.17715118, -0.17360319, -0.16993792]), array([-5.04965293e-03, -1.03711771e-02, -1.5685...52e-02, 5.59989438e-03, 2.75215576e-04])], 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([-0.16615883, -0.1622695 , -0.15827361, -0...6, -0.17715118, -0.17360319, -0.16993792]), array([-5.04965293e-03, -1.03711771e-02, -1.5685...52e-02, 5.59989438e-03, 2.75215576e-04])], 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([[-0.16615883, -0.1622695 , -0.15827361, .... 0.01092079, 0.00559989, -0.00504965]]), 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. , 0.00322555, 0.00647948, 0.009...176 , 0.99051182, 0.99364145, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=587, 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([[-0.16615883, -0.1622695 , -0.15827361, .... 0.01092079, 0.00559989, -0.00504965]]), 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. , 0.00322555, 0.00647948, 0.009...176 , 0.99051182, 0.99364145, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 587, 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>