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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:22:12

Orbital Elements for HDO182
WDS: HDO182 WDS ID/Discoverer
P: 840.000 Orbital period (years)
a: 1.175 Semi-major axis (arcseconds)
i: 16.88 Inclination (degrees)
Ω: 13.06 Longitude of ascending node (degrees)
T: 1989.900 Epoch of periastron passage (year)
e: 0.88 Eccentricity
ω: 0.66 Longitude of periastron (degrees)
Start-Year: 1605.0 Year
End-Year: 2445.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDO182
Position: 004242.89-382748.6 Epoch-2000 right ascension and declination
WDS-ID: 00427-3828 WDS designation
Discoverer Code: HDO182 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 4065 HD catalog number
Hipparcos number: 3356 Hipparcos catalog number
V1: 6.60 Magnitude of the primary
V2: 7.01 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HDO182
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:22:12 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 = [0.5924596323873014, 0.5943553069293267, 0.596245903503442, 0.5981314017770404, 0.6000117813145485, 0.6018870215761174, 0.6037571019163029, 0.6056220015827346, 0.60748169971477, 0.6093361753421409, 0.6111854073835805, 0.6130293746454433, 0.6148680558203142, 0.6167014294855891, 0.618529474102067, 0.6203521680125014, 0.6221694894401587, 0.6239814164873517, 0.6257879271339588, 0.6275889992359294, ...], y_list = [-2.1173729031890596, -2.116225338871857, -2.1150596942602093, -2.1138759644855343, -2.1126741444259514, -2.1114542287058193, -2.11021621169525, -2.1089600875096055, -2.1076858500089717, -2.106393492797616, -2.1050830092234176, -2.1037543923772883, -2.1024076350925607, -2.101042729944364, -2.099659669248976, -2.0982584450631574, -2.096839049183455, -2.0954014731455013, -2.093945708223275, -2.092471745428348, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.5924596323873014, 0.5943553069293267, 0.596245903503442, 0.5981314017770404, 0.6000117813145485, 0.6018870215761174, 0.6037571019163029, 0.6056220015827346, 0.60748169971477, 0.6093361753421409, 0.6111854073835805, 0.6130293746454433, 0.6148680558203142, 0.6167014294855891, 0.618529474102067, 0.6203521680125014, 0.6221694894401587, 0.6239814164873517, 0.6257879271339588, 0.6275889992359294, ...], y_list=[-2.1173729031890596, -2.116225338871857, -2.1150596942602093, -2.1138759644855343, -2.1126741444259514, -2.1114542287058193, -2.11021621169525, -2.1089600875096055, -2.1076858500089717, -2.106393492797616, -2.1050830092234176, -2.1037543923772883, -2.1024076350925607, -2.101042729944364, -2.099659669248976, -2.0982584450631574, -2.096839049183455, -2.0954014731455013, -2.093945708223275, -2.092471745428348, ...])
    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([-2.19653507e-01, -2.32711340e-01, -2.4434...19e-01, -1.88331366e-01, -2.04945972e-01]), y = array([-0.0122589 , -0.0343324 , -0.05619962, -0... , 0.05363833, 0.03196105, 0.00990106]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-2.19653507e-01, -2.32711340e-01, -2.4434...19e-01, -1.88331366e-01, -2.04945972e-01]), array([-0.0122589 , -0.0343324 , -0.05619962, -0... , 0.05363833, 0.03196105, 0.00990106])], 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([-2.19653507e-01, -2.32711340e-01, -2.4434...19e-01, -1.88331366e-01, -2.04945972e-01]), array([-0.0122589 , -0.0343324 , -0.05619962, -0... , 0.05363833, 0.03196105, 0.00990106])], 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([[-0.21965351, -0.23271134, -0.24434326, .... 0.05363833, 0.03196105, -0.0122589 ]]), 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. , 0.00461321, 0.00906848, 0.013...2815, 0.98509067, 0.99025262, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=847, 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([[-0.21965351, -0.23271134, -0.24434326, .... 0.05363833, 0.03196105, -0.0122589 ]]), 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. , 0.00461321, 0.00906848, 0.013...2815, 0.98509067, 0.99025262, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 847, 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>