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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:03:38

Orbital Elements for HDS2716
WDS: HDS2716 WDS ID/Discoverer
P: 150.000 Orbital period (years)
a: 0.19 Semi-major axis (arcseconds)
i: 68.8 Inclination (degrees)
Ω: 97.6 Longitude of ascending node (degrees)
T: 2019.560 Epoch of periastron passage (year)
e: 0.94 Eccentricity
ω: 104.9 Longitude of periastron (degrees)
Start-Year: 1950.0 Year
End-Year: 2100.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2716
Position: 190918.40+113736.5 Epoch-2000 right ascension and declination
WDS-ID: 19093+1138 WDS designation
Discoverer Code: HDS2716 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 178715 HD catalog number
Hipparcos number: 94098 Hipparcos catalog number
V1: 7.60 Magnitude of the primary
V2: 9.43 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS2716
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:03:38 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 = [-0.11777904247294084, -0.11893804055787341, -0.1200680491956699, -0.12116865372406091, -0.12223942254918395, -0.12327990627300181, -0.12428963673474352, -0.1252681259866892, -0.12621486519820369, -0.12712932348129807, -0.12801094663029453, -0.12885915576737916, -0.12967334588492138, -0.13045288427442503, -0.13119710883080712, -0.13190532621938497, -0.13257680989144763, -0.13321079793255788, -0.13380649072577008, -0.13436304840967528, ...], y_list = [0.11306340593668324, 0.11259203857802233, 0.11209322883436552, 0.11156696830102271, 0.1110132366811134, 0.11043200168357167, 0.10982321890171066, 0.10918683166141767, 0.10852277083794538, 0.10783095464006788, 0.1071112883601506, 0.1063636640884482, 0.1055879603896903, 0.10478404193973435, 0.10395175911975969, 0.10309094756513483, 0.10220142766571366, 0.10128300401389513, 0.1003354647963091, 0.09935858112445839, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.11777904247294084, -0.11893804055787341, -0.1200680491956699, -0.12116865372406091, -0.12223942254918395, -0.12327990627300181, -0.12428963673474352, -0.1252681259866892, -0.12621486519820369, -0.12712932348129807, -0.12801094663029453, -0.12885915576737916, -0.12967334588492138, -0.13045288427442503, -0.13119710883080712, -0.13190532621938497, -0.13257680989144763, -0.13321079793255788, -0.13380649072577008, -0.13436304840967528, ...], y_list=[0.11306340593668324, 0.11259203857802233, 0.11209322883436552, 0.11156696830102271, 0.1110132366811134, 0.11043200168357167, 0.10982321890171066, 0.10918683166141767, 0.10852277083794538, 0.10783095464006788, 0.1071112883601506, 0.1063636640884482, 0.1055879603896903, 0.10478404193973435, 0.10395175911975969, 0.10309094756513483, 0.10220142766571366, 0.10128300401389513, 0.1003354647963091, 0.09935858112445839, ...])
    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([-0.03970287, -0.01814659, 0.01730965, 0...6, -0.07136494, -0.06322411, -0.05315088]), y = array([-0.0016223 , -0.00507281, 0.00212692, 0... , 0.01016254, 0.00639894, 0.00244904]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.03970287, -0.01814659, 0.01730965, 0...6, -0.07136494, -0.06322411, -0.05315088]), array([-0.0016223 , -0.00507281, 0.00212692, 0... , 0.01016254, 0.00639894, 0.00244904])], 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([-0.03970287, -0.01814659, 0.01730965, 0...6, -0.07136494, -0.06322411, -0.05315088]), array([-0.0016223 , -0.00507281, 0.00212692, 0... , 0.01016254, 0.00639894, 0.00244904])], 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([[-0.03970287, -0.01814659, 0.01730965, ... 0.01016254, 0.00639894, -0.0016223 ]]), 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. , 0.04850688, 0.12889699, 0.161...6646, 0.92485325, 0.94478137, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=157, 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([[-0.03970287, -0.01814659, 0.01730965, ... 0.01016254, 0.00639894, -0.0016223 ]]), 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. , 0.04850688, 0.12889699, 0.161...6646, 0.92485325, 0.94478137, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 157, 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>