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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:32:53

Orbital Elements for HDS1019AB
WDS: HDS1019AB WDS ID/Discoverer
P: 200.000 Orbital period (years)
a: 0.587 Semi-major axis (arcseconds)
i: 85.1 Inclination (degrees)
Ω: 163.9 Longitude of ascending node (degrees)
T: 2019.420 Epoch of periastron passage (year)
e: 0.979 Eccentricity
ω: 179.1 Longitude of periastron (degrees)
Start-Year: 1925.0 Year
End-Year: 2125.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1019AB
Position: 071912.43+205736.9 Epoch-2000 right ascension and declination
WDS-ID: 07192+2058 WDS designation
Discoverer Code: HDS1019AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 56762 HD catalog number
Hipparcos number: 35459 Hipparcos catalog number
V1: 8.73 Magnitude of the primary
V2: 12.20 Magnitude of the secondary
Equinox: Equinox
Date: 2021 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS1019AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:32:53 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 = [-0.3221416240315004, -0.32174344064992827, -0.3213039520120266, -0.3208231046092196, -0.32030083448700436, -0.3197370671781357, -0.31913171758640396, -0.31848468986096556, -0.31779587725478325, -0.3170651619666727, -0.31629241496639743, -0.31547749580218454, -0.31462025238996444, -0.31372052078356755, -0.3127781249250226, -0.3117928763740264, -0.310764574015553, -0.3096930037444777, -0.3085779381259799, -0.3074191360303732, ...], y_list = [-1.1137391313493556, -1.1129476152919893, -1.1120132195791623, -1.1109356836800115, -1.1097147105110337, -1.1083499660862872, -1.1068410790428405, -1.1051876401232787, -1.1033892016011333, -1.1014452766472373, -1.0993553386348018, -1.0971188203807574, -1.0947351133206433, -1.0922035666140615, -1.0895234861774055, -1.0866941336402607, -1.0837147252215256, -1.0805844305209278, -1.077302371221212, -1.0738676196958243, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.3221416240315004, -0.32174344064992827, -0.3213039520120266, -0.3208231046092196, -0.32030083448700436, -0.3197370671781357, -0.31913171758640396, -0.31848468986096556, -0.31779587725478325, -0.3170651619666727, -0.31629241496639743, -0.31547749580218454, -0.31462025238996444, -0.31372052078356755, -0.3127781249250226, -0.3117928763740264, -0.310764574015553, -0.3096930037444777, -0.3085779381259799, -0.3074191360303732, ...], y_list=[-1.1137391313493556, -1.1129476152919893, -1.1120132195791623, -1.1109356836800115, -1.1097147105110337, -1.1083499660862872, -1.1068410790428405, -1.1051876401232787, -1.1033892016011333, -1.1014452766472373, -1.0993553386348018, -1.0971188203807574, -1.0947351133206433, -1.0922035666140615, -1.0895234861774055, -1.0866941336402607, -1.0837147252215256, -1.0805844305209278, -1.077302371221212, -1.0738676196958243, ...])
    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([-0.01269744, -0.03162667, -0.04609919, -0...1, -0.03161522, -0.01871905, -0.00263477]), y = array([-0.02966923, -0.08793186, -0.13405754, -0...9, -0.13334097, -0.08482582, -0.02117346]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.01269744, -0.03162667, -0.04609919, -0...1, -0.03161522, -0.01871905, -0.00263477]), array([-0.02966923, -0.08793186, -0.13405754, -0...9, -0.13334097, -0.08482582, -0.02117346])], 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([-0.01269744, -0.03162667, -0.04609919, -0...1, -0.03161522, -0.01871905, -0.00263477]), array([-0.02966923, -0.08793186, -0.13405754, -0...9, -0.13334097, -0.08482582, -0.02117346])], 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([[-0.01269744, -0.03162667, -0.04609919, -... -0.13334097, -0.08482582, -0.02966923]]), 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. , 0.02709687, 0.04847998, 0.066...9744, 0.95325355, 0.97545807, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=207, 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([[-0.01269744, -0.03162667, -0.04609919, -... -0.13334097, -0.08482582, -0.02966923]]), 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. , 0.02709687, 0.04847998, 0.066...9744, 0.95325355, 0.97545807, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 207, 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>