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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:28:53

Orbital Elements for HU374
WDS: HU374 WDS ID/Discoverer
P: 130.000 Orbital period (years)
a: 0.229 Semi-major axis (arcseconds)
i: 120.5 Inclination (degrees)
Ω: 26.9 Longitude of ascending node (degrees)
T: 1983.100 Epoch of periastron passage (year)
e: 0.569 Eccentricity
ω: 177.5 Longitude of periastron (degrees)
Start-Year: 1960.0 Year
End-Year: 2090.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU374
Position: 214325.99+235305.4 Epoch-2000 right ascension and declination
WDS-ID: 21434+2353 WDS designation
Discoverer Code: HU374 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 206719 HD catalog number
Hipparcos number: 107254 Hipparcos catalog number
V1: 9.4 Magnitude of the primary
V2: 9.4 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1987 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HU374
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:28:53 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 = [0.007481755186765331, 0.01276425185773186, 0.01801985457133123, 0.023234435049377285, 0.028391577302472947, 0.03347211792008618, 0.03845358010723035, 0.043309474988652535, 0.04800843767006345, 0.05251315916320418, 0.05677906978560899, 0.060752727865504515, 0.06436987544960576, 0.06755315197608895, 0.07020952963870407, 0.07222768948959851, 0.07347585786906621, 0.07380115169477741, 0.07303229994612122, 0.07098861188544871, ...], y_list = [0.1873808073311818, 0.17833725623564403, 0.16892017056600014, 0.15912033230828165, 0.14892872826416628, 0.13833681844883847, 0.12733691498733785, 0.11592271476452706, 0.10409004649104334, 0.09183791726785032, 0.0791699776392074, 0.06609657026447008, 0.05263758779758764, 0.038826439172620006, 0.024715499599420748, 0.010383464438250087, -0.004055042649424105, -0.01843761803220893, -0.032540963469595265, -0.046069496437912895, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.007481755186765331, 0.01276425185773186, 0.01801985457133123, 0.023234435049377285, 0.028391577302472947, 0.03347211792008618, 0.03845358010723035, 0.043309474988652535, 0.04800843767006345, 0.05251315916320418, 0.05677906978560899, 0.060752727865504515, 0.06436987544960576, 0.06755315197608895, 0.07020952963870407, 0.07222768948959851, 0.07347585786906621, 0.07380115169477741, 0.07303229994612122, 0.07098861188544871, ...], y_list=[0.1873808073311818, 0.17833725623564403, 0.16892017056600014, 0.15912033230828165, 0.14892872826416628, 0.13833681844883847, 0.12733691498733785, 0.11592271476452706, 0.10409004649104334, 0.09183791726785032, 0.0791699776392074, 0.06609657026447008, 0.05263758779758764, 0.038826439172620006, 0.024715499599420748, 0.010383464438250087, -0.004055042649424105, -0.01843761803220893, -0.032540963469595265, -0.046069496437912895, ...])
    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([-0.09857882, -0.09043994, -0.08182514, -0...1, -0.1203262 , -0.11350254, -0.10625992]), y = array([-0.00494699, -0.01526078, -0.02549294, -0...8, 0.02596608, 0.01570711, 0.00539079]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.09857882, -0.09043994, -0.08182514, -0...1, -0.1203262 , -0.11350254, -0.10625992]), array([-0.00494699, -0.01526078, -0.02549294, -0...8, 0.02596608, 0.01570711, 0.00539079])], 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([-0.09857882, -0.09043994, -0.08182514, -0...1, -0.1203262 , -0.11350254, -0.10625992]), array([-0.00494699, -0.01526078, -0.02549294, -0...8, 0.02596608, 0.01570711, 0.00539079])], 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([[-0.09857882, -0.09043994, -0.08182514, -... 0.02596608, 0.01570711, -0.00494699]]), 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. , 0.01236174, 0.02494691, 0.037...1137, 0.96443184, 0.97602463, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=137, 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([[-0.09857882, -0.09043994, -0.08182514, -... 0.02596608, 0.01570711, -0.00494699]]), 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. , 0.01236174, 0.02494691, 0.037...1137, 0.96443184, 0.97602463, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 137, 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>