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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:21:37

Orbital Elements for VOU31AB
WDS: VOU31AB WDS ID/Discoverer
P: 182.000 Orbital period (years)
a: 0.788 Semi-major axis (arcseconds)
i: 125.4 Inclination (degrees)
Ω: 251.9 Longitude of ascending node (degrees)
T: 2031.300 Epoch of periastron passage (year)
e: 0.6 Eccentricity
ω: 171.8 Longitude of periastron (degrees)
Start-Year: 1934.0 Year
End-Year: 2116.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for VOU31AB
Position: 140349.40-602222.9 Epoch-2000 right ascension and declination
WDS-ID: 14038-6022 WDS designation
Discoverer Code: VOU31AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 122451 HD catalog number
Hipparcos number: 68702 Hipparcos catalog number
V1: 0.58 Magnitude of the primary
V2: 3.95 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for VOU31AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:21:37 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 = [1.2151193829230253, 1.2166025152450335, 1.2177290200870117, 1.2184994662498692, 1.218914338191049, 1.218974036655587, 1.218678879122249, 1.2180291001695516, 1.21702485175871, 1.21566620343285, 1.2139531424341525, 1.2118855737429017, 1.209463319959154, 1.2066861213332847, 1.203553635375353, 1.2000654366526406, 1.1962210163940998, 1.1920197820330605, 1.1874610566692303, 1.1825440784502022, ...], y_list = [-0.23661132803200172, -0.24507536033317825, -0.2534675535560486, -0.2617856349566178, -0.2700273245672522, -0.27819033272095023, -0.286272357050295, -0.29427107950611364, -0.3021841633783842, -0.31000925030237014, -0.3177439572334954, -0.3253858733750653, -0.3329325572902952, -0.34038153321091397, -0.3477302883986338, -0.3549762695285534, -0.36211687936006104, -0.3691494732421428, -0.37607135550583803, -0.38287977573114435, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.2151193829230253, 1.2166025152450335, 1.2177290200870117, 1.2184994662498692, 1.218914338191049, 1.218974036655587, 1.218678879122249, 1.2180291001695516, 1.21702485175871, 1.21566620343285, 1.2139531424341525, 1.2118855737429017, 1.209463319959154, 1.2066861213332847, 1.203553635375353, 1.2000654366526406, 1.1962210163940998, 1.1920197820330605, 1.1874610566692303, 1.1825440784502022, ...], y_list=[-0.23661132803200172, -0.24507536033317825, -0.2534675535560486, -0.2617856349566178, -0.2700273245672522, -0.27819033272095023, -0.286272357050295, -0.29427107950611364, -0.3021841633783842, -0.31000925030237014, -0.3177439572334954, -0.3253858733750653, -0.3329325572902952, -0.34038153321091397, -0.3477302883986338, -0.3549762695285534, -0.36211687936006104, -0.3691494732421428, -0.37607135550583803, -0.38287977573114435, ...])
    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([-0.29519885, -0.28249889, -0.2653653 , -0...2, -0.30162497, -0.30506957, -0.30286595]), y = array([-0.00387581, -0.0372701 , -0.0700882 , -0... , 0.09425146, 0.06249364, 0.02957778]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.29519885, -0.28249889, -0.2653653 , -0...2, -0.30162497, -0.30506957, -0.30286595]), array([-0.00387581, -0.0372701 , -0.0700882 , -0... , 0.09425146, 0.06249364, 0.02957778])], 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([-0.29519885, -0.28249889, -0.2653653 , -0...2, -0.30162497, -0.30506957, -0.30286595]), array([-0.00387581, -0.0372701 , -0.0700882 , -0... , 0.09425146, 0.06249364, 0.02957778])], 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([[-2.95198847e-01, -2.82498892e-01, -2.653...42514602e-02, 6.24936367e-02, -3.87580510e-03]]), 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. , 0.00955573, 0.01945748, 0.029...265 , 0.97350982, 0.98205359, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=189, 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([[-2.95198847e-01, -2.82498892e-01, -2.653...42514602e-02, 6.24936367e-02, -3.87580510e-03]]), 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. , 0.00955573, 0.01945748, 0.029...265 , 0.97350982, 0.98205359, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 189, 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>