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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:44:31

Orbital Elements for HDS371
WDS: HDS371 WDS ID/Discoverer
P: 132.000 Orbital period (years)
a: 0.35 Semi-major axis (arcseconds)
i: 120.0 Inclination (degrees)
Ω: 116.3 Longitude of ascending node (degrees)
T: 2022.300 Epoch of periastron passage (year)
e: 0.303 Eccentricity
ω: 118.4 Longitude of periastron (degrees)
Start-Year: 1959.0 Year
End-Year: 2091.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS371
Position: 025424.33-200701.6 Epoch-2000 right ascension and declination
WDS-ID: 02544-2007 WDS designation
Discoverer Code: HDS371 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 18165 HD catalog number
Hipparcos number: 13542 Hipparcos catalog number
V1: 9.23 Magnitude of the primary
V2: 11.59 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS371
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:44:31 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 = [-0.13456301210465252, -0.14505208212327686, -0.15539163609171572, -0.1655703859155188, -0.17557696272402326, -0.1853998969576799, -0.19502759981109857, -0.20444834339953824, -0.2136502412796833, -0.22262122870513193, -0.23134904267558037, -0.23982120175840999, -0.24802498566942435, -0.2559474146090987, -0.26357522836231223, -0.2708948651835506, -0.2778924405065185, -0.2845537255376379, -0.2908641258177879, -0.2968086598667349, ...], y_list = [-0.28069591021129253, -0.28193159981505334, -0.28287669277896615, -0.28352906967598934, -0.28388662616173516, -0.2839472723587754, -0.28370893299033056, -0.2831695481815585, -0.2823270750532386, -0.28117949013501664, -0.27972479266977895, -0.27796100888892133, -0.2758861973522142, -0.2734984554615095, -0.2707959272749395, -0.26777681276779336, -0.2644393787082389, -0.26078197134082437, -0.2568030310986168, -0.25250110959635, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.13456301210465252, -0.14505208212327686, -0.15539163609171572, -0.1655703859155188, -0.17557696272402326, -0.1853998969576799, -0.19502759981109857, -0.20444834339953824, -0.2136502412796833, -0.22262122870513193, -0.23134904267558037, -0.23982120175840999, -0.24802498566942435, -0.2559474146090987, -0.26357522836231223, -0.2708948651835506, -0.2778924405065185, -0.2845537255376379, -0.2908641258177879, -0.2968086598667349, ...], y_list=[-0.28069591021129253, -0.28193159981505334, -0.28287669277896615, -0.28352906967598934, -0.28388662616173516, -0.2839472723587754, -0.28370893299033056, -0.2831695481815585, -0.2823270750532386, -0.28117949013501664, -0.27972479266977895, -0.27796100888892133, -0.2758861973522142, -0.2734984554615095, -0.2707959272749395, -0.26777681276779336, -0.2644393787082389, -0.26078197134082437, -0.2568030310986168, -0.25250110959635, ...])
    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([-0.23994713, -0.25196677, -0.26309091, -0...9, -0.19851791, -0.21321629, -0.2270293 ]), y = array([-0.00704531, -0.01897056, -0.03082873, -0...8, 0.02869853, 0.01683743, 0.00490594]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.23994713, -0.25196677, -0.26309091, -0...9, -0.19851791, -0.21321629, -0.2270293 ]), array([-0.00704531, -0.01897056, -0.03082873, -0...8, 0.02869853, 0.01683743, 0.00490594])], 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([-0.23994713, -0.25196677, -0.26309091, -0...9, -0.19851791, -0.21321629, -0.2270293 ]), array([-0.00704531, -0.01897056, -0.03082873, -0...8, 0.02869853, 0.01683743, 0.00490594])], 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([[-0.23994713, -0.25196677, -0.26309091, -... 0.02869853, 0.01683743, -0.00704531]]), 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. , 0.01029132, 0.02017389, 0.029...8385, 0.96673254, 0.97821245, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=139, 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([[-0.23994713, -0.25196677, -0.26309091, -... 0.02869853, 0.01683743, -0.00704531]]), 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. , 0.01029132, 0.02017389, 0.029...8385, 0.96673254, 0.97821245, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 139, 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>