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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:35:32

Orbital Elements for HDS315
WDS: HDS315 WDS ID/Discoverer
P: 600.000 Orbital period (years)
a: 0.674 Semi-major axis (arcseconds)
i: 50.0 Inclination (degrees)
Ω: 63.4 Longitude of ascending node (degrees)
T: 2002.500 Epoch of periastron passage (year)
e: 0.64 Eccentricity
ω: 237.4 Longitude of periastron (degrees)
Start-Year: 1725.0 Year
End-Year: 2325.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS315
Position: 022523.19+013515.2 Epoch-2000 right ascension and declination
WDS-ID: 02254+0135 WDS designation
Discoverer Code: HDS315 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 15030 HD catalog number
Hipparcos number: 11286 Hipparcos catalog number
V1: 9.24 Magnitude of the primary
V2: 11.53 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS315
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:35:32 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 = [-0.7510578964186454, -0.7486340757632877, -0.746191395232596, -0.7437298946687644, -0.7412496135906332, -0.7387505911987938, -0.7362328663807055, -0.7336964777158004, -0.7311414634805894, -0.7285678616537697, -0.7259757099213313, -0.7233650456816714, -0.7207359060507154, -0.7180883278670449, -0.7154223476970363, -0.7127380018400133, -0.710035326333412, -0.707314356957967, -0.7045751292429103, -0.701817678471198, ...], y_list = [-0.3178669452114169, -0.31996946145441446, -0.32206391688975033, -0.32415024938872034, -0.3262283964959665, -0.32829829542171557, -0.33035988303392905, -0.332413095850384, -0.3344578700306748, -0.3364941413681315, -0.3385218452816581, -0.340540916807481, -0.34255129059080824, -0.34455290087739765, -0.3465456815050306, -0.3485295658948857, -0.350504487042815, -0.35247037751051097, -0.3544271694165732, -0.35637479442745945, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.7510578964186454, -0.7486340757632877, -0.746191395232596, -0.7437298946687644, -0.7412496135906332, -0.7387505911987938, -0.7362328663807055, -0.7336964777158004, -0.7311414634805894, -0.7285678616537697, -0.7259757099213313, -0.7233650456816714, -0.7207359060507154, -0.7180883278670449, -0.7154223476970363, -0.7127380018400133, -0.710035326333412, -0.707314356957967, -0.7045751292429103, -0.701817678471198, ...], y_list=[-0.3178669452114169, -0.31996946145441446, -0.32206391688975033, -0.32415024938872034, -0.3262283964959665, -0.32829829542171557, -0.33035988303392905, -0.332413095850384, -0.3344578700306748, -0.3364941413681315, -0.3385218452816581, -0.340540916807481, -0.34255129059080824, -0.34455290087739765, -0.3465456815050306, -0.3485295658948857, -0.350504487042815, -0.35247037751051097, -0.3544271694165732, -0.35637479442745945, ...])
    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([-8.85159463e-01, -8.85697985e-01, -8.8620...40e-01, -8.83993996e-01, -8.84591518e-01]), y = array([-1.36739574e-04, -2.79121542e-03, -5.4455...73e-03, 5.17213676e-03, 2.51774073e-03]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-8.85159463e-01, -8.85697985e-01, -8.8620...40e-01, -8.83993996e-01, -8.84591518e-01]), array([-1.36739574e-04, -2.79121542e-03, -5.4455...73e-03, 5.17213676e-03, 2.51774073e-03])], 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([-8.85159463e-01, -8.85697985e-01, -8.8620...40e-01, -8.83993996e-01, -8.84591518e-01]), array([-1.36739574e-04, -2.79121542e-03, -5.4455...73e-03, 5.17213676e-03, 2.51774073e-03])], 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([[-8.85159463e-01, -8.85697985e-01, -8.862...82635873e-03, 5.17213676e-03, -1.36739574e-04]]), 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([0.00000000e+00, 8.81824807e-04, 1.7617750...2486e-01, 9.98230426e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=607, 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([[-8.85159463e-01, -8.85697985e-01, -8.862...82635873e-03, 5.17213676e-03, -1.36739574e-04]]), 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([0.00000000e+00, 8.81824807e-04, 1.7617750...2486e-01, 9.98230426e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 607, 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>