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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:40:04

Orbital Elements for A1238AB
WDS: A1238AB WDS ID/Discoverer
P: 72.000 Orbital period (years)
a: 0.247 Semi-major axis (arcseconds)
i: 153.5 Inclination (degrees)
Ω: 114.3 Longitude of ascending node (degrees)
T: 1963.250 Epoch of periastron passage (year)
e: 0.2773 Eccentricity
ω: 145.7 Longitude of periastron (degrees)
Start-Year: 1989.0 Year
End-Year: 2061.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1238AB
Position: 230847.77+105731.1 Epoch-2000 right ascension and declination
WDS-ID: 23088+1058 WDS designation
Discoverer Code: A1238AB Discover designation and components
ADS number: 16539 Aitken Double Star catalog
HD number: 218550 HD catalog number
Hipparcos number: 114280 Hipparcos catalog number
V1: 8.20 Magnitude of the primary
V2: 8.79 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A1238AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:40:04 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 = [-0.012277708509564274, -0.0291857034535033, -0.04597229855230665, -0.0625726104139492, -0.07892527829566369, -0.09497194513364522, -0.11065678790477013, -0.1259260914490679, -0.14072785988789135, -0.15501146195555834, -0.1687273038984888, -0.18182652811426384, -0.1942607332373712, -0.2059817133896799, -0.21694121455396378, -0.22709070726124012, -0.2363811731093138, -0.2447629088668102, -0.25218534580513635, -0.2585968891122368, ...], y_list = [-0.27274684670249816, -0.2757621111092681, -0.2776271530887608, -0.27836549290575185, -0.2780010564462327, -0.2765580585191282, -0.2740609354869515, -0.27053431931903915, -0.26600304731692354, -0.2604922029990639, -0.25402718589392537, -0.24663380815829478, -0.23833841779534204, -0.2291680488630737, -0.2191506001017322, -0.20831504372928777, -0.196691669569466, -0.18431236521070166, -0.1712109411054555, -0.15742350474152533, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.012277708509564274, -0.0291857034535033, -0.04597229855230665, -0.0625726104139492, -0.07892527829566369, -0.09497194513364522, -0.11065678790477013, -0.1259260914490679, -0.14072785988789135, -0.15501146195555834, -0.1687273038984888, -0.18182652811426384, -0.1942607332373712, -0.2059817133896799, -0.21694121455396378, -0.22709070726124012, -0.2363811731093138, -0.2447629088668102, -0.25218534580513635, -0.2585968891122368, ...], y_list=[-0.27274684670249816, -0.2757621111092681, -0.2776271530887608, -0.27836549290575185, -0.2780010564462327, -0.2765580585191282, -0.2740609354869515, -0.27053431931903915, -0.26600304731692354, -0.2604922029990639, -0.25402718589392537, -0.24663380815829478, -0.23833841779534204, -0.2291680488630737, -0.2191506001017322, -0.20831504372928777, -0.196691669569466, -0.18431236521070166, -0.1712109411054555, -0.15742350474152533, ...])
    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([-0.26168455, -0.26689495, -0.27057719, -0...3, -0.2363036 , -0.24644394, -0.25488658]), y = array([-0.01025026, -0.0279308 , -0.04545234, -0...8, 0.04270069, 0.02518351, 0.00749141]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.26168455, -0.26689495, -0.27057719, -0...3, -0.2363036 , -0.24644394, -0.25488658]), array([-0.01025026, -0.0279308 , -0.04545234, -0...8, 0.04270069, 0.02518351, 0.00749141])], 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([-0.26168455, -0.26689495, -0.27057719, -0...3, -0.2363036 , -0.24644394, -0.25488658]), array([-0.01025026, -0.0279308 , -0.04545234, -0...8, 0.04270069, 0.02518351, 0.00749141])], 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([[-0.26168455, -0.26689495, -0.27057719, -... 0.04270069, 0.02518351, -0.01025026]]), 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. , 0.01277215, 0.02517843, 0.037...6044, 0.95924724, 0.97327234, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=79, 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([[-0.26168455, -0.26689495, -0.27057719, -... 0.04270069, 0.02518351, -0.01025026]]), 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. , 0.01277215, 0.02517843, 0.037...6044, 0.95924724, 0.97327234, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 79, 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>