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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:59:38

Orbital Elements for A2388
WDS: A2388 WDS ID/Discoverer
P: 330.000 Orbital period (years)
a: 0.453 Semi-major axis (arcseconds)
i: 70.3 Inclination (degrees)
Ω: 254.7 Longitude of ascending node (degrees)
T: 1942.400 Epoch of periastron passage (year)
e: 0.85 Eccentricity
ω: 96.0 Longitude of periastron (degrees)
Start-Year: 1860.0 Year
End-Year: 2190.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2388
Position: 184359.30+032038.2 Epoch-2000 right ascension and declination
WDS-ID: 18440+0321 WDS designation
Discoverer Code: A2388 Discover designation and components
ADS number: 11619 Aitken Double Star catalog
HD number: 173196 HD catalog number
Hipparcos number: 91893 Hipparcos catalog number
V1: 8.59 Magnitude of the primary
V2: 9.56 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A2388
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:59:38 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 = [0.18991757291200617, 0.1916360314285567, 0.19333458710790055, 0.19501272081151286, 0.19666989620864586, 0.1983055589287317, 0.1999191356613601, 0.2015100331998319, 0.20307763742391874, 0.20462131221706822, 0.20614039831283468, 0.20763421206485208, 0.20910204413408082, 0.21054315808650176, 0.21195678889370267, 0.21334214132810422, 0.21469838824368942, 0.21602466873219311, 0.2173200861436324, 0.2185837059589088, ...], y_list = [-0.27624855638203805, -0.27509497247555453, -0.2739128189453649, -0.27270173302318157, -0.2714613405538359, -0.2701912555146681, -0.2688910795076785, -0.26756040122253916, -0.26619879586839545, -0.26480582457221175, -0.2633810337412276, -0.26192395438687155, -0.2604341014072444, -0.25891097282503284, -0.25735404897741443, -0.25576279165421145, -0.2541366431801887, -0.2524750254370075, -0.25077733881991215, -0.2490429611237426, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.18991757291200617, 0.1916360314285567, 0.19333458710790055, 0.19501272081151286, 0.19666989620864586, 0.1983055589287317, 0.1999191356613601, 0.2015100331998319, 0.20307763742391874, 0.20462131221706822, 0.20614039831283468, 0.20763421206485208, 0.20910204413408082, 0.21054315808650176, 0.21195678889370267, 0.21334214132810422, 0.21469838824368942, 0.21602466873219311, 0.2173200861436324, 0.2185837059589088, ...], y_list=[-0.27624855638203805, -0.27509497247555453, -0.2739128189453649, -0.27270173302318157, -0.2714613405538359, -0.2701912555146681, -0.2688910795076785, -0.26756040122253916, -0.26619879586839545, -0.26480582457221175, -0.2633810337412276, -0.26192395438687155, -0.2604341014072444, -0.25891097282503284, -0.25735404897741443, -0.25576279165421145, -0.2541366431801887, -0.2524750254370075, -0.25077733881991215, -0.2490429611237426, ...])
    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([-1.91225322e-01, -1.95395326e-01, -1.9915....75686222e-01, -1.81438473e-01, -1.86593432e-01]), y = array([-0.00205849, -0.0057303 , -0.00939023, -0...5, 0.00894386, 0.00528985, 0.00161808]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.91225322e-01, -1.95395326e-01, -1.9915....75686222e-01, -1.81438473e-01, -1.86593432e-01]), array([-0.00205849, -0.0057303 , -0.00939023, -0...5, 0.00894386, 0.00528985, 0.00161808])], 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([-1.91225322e-01, -1.95395326e-01, -1.9915....75686222e-01, -1.81438473e-01, -1.86593432e-01]), array([-0.00205849, -0.0057303 , -0.00939023, -0...5, 0.00894386, 0.00528985, 0.00161808])], 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([[-1.91225322e-01, -1.95395326e-01, -1.991...e-03, 5.28985347e-03, -2.05848982e-03]]), 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. , 0.00443514, 0.00862309, 0.012...9409, 0.98479108, 0.99023081, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=337, 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([[-1.91225322e-01, -1.95395326e-01, -1.991...e-03, 5.28985347e-03, -2.05848982e-03]]), 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. , 0.00443514, 0.00862309, 0.012...9409, 0.98479108, 0.99023081, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 337, 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>