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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:11:26

Orbital Elements for A481AB
WDS: A481AB WDS ID/Discoverer
P: 200.000 Orbital period (years)
a: 0.529 Semi-major axis (arcseconds)
i: 114.8 Inclination (degrees)
Ω: 54.1 Longitude of ascending node (degrees)
T: 2085.000 Epoch of periastron passage (year)
e: 0.903 Eccentricity
ω: 279.8 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 A481AB
Position: 050418.00-060152.7 Epoch-2000 right ascension and declination
WDS-ID: 05043-0602 WDS designation
Discoverer Code: A481AB Discover designation and components
ADS number: 3662 Aitken Double Star catalog
HD number: 32622 HD catalog number
Hipparcos number: 23586 Hipparcos catalog number
V1: 7.07 Magnitude of the primary
V2: 8.96 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1997 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A481AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:11:26 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 = [0.12328020666824623, 0.1289654287058002, 0.1346078731615546, 0.14020721795808438, 0.14576317448592174, 0.15127548315407857, 0.156743909498873, 0.16216824077198397, 0.16754828294103374, 0.17288385804623108, 0.1781748018651271, 0.18342096184460832, 0.18862219526522145, 0.1937783676078653, 0.19888935109712963, 0.2039550233990675, 0.20897526645424033, 0.21394996542938954, 0.21887900777330022, 0.22376228236427295, ...], y_list = [0.2980201827124099, 0.29891293337497593, 0.2997065107574365, 0.3004041042760369, 0.30100871576487315, 0.30152317455560773, 0.30195015103086004, 0.30229216883592464, 0.3025516159076533, 0.30273075445760833, 0.30283173002820846, 0.302856579725002, 0.3028072397149052, 0.3026855520689235, 0.30249327101811724, 0.30223206868324587, 0.3019035403312755, 0.3015092092057379, 0.3010505309724921, 0.30052889781775044, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.12328020666824623, 0.1289654287058002, 0.1346078731615546, 0.14020721795808438, 0.14576317448592174, 0.15127548315407857, 0.156743909498873, 0.16216824077198397, 0.16754828294103374, 0.17288385804623108, 0.1781748018651271, 0.18342096184460832, 0.18862219526522145, 0.1937783676078653, 0.19888935109712963, 0.2039550233990675, 0.20897526645424033, 0.21394996542938954, 0.21887900777330022, 0.22376228236427295, ...], y_list=[0.2980201827124099, 0.29891293337497593, 0.2997065107574365, 0.3004041042760369, 0.30100871576487315, 0.30152317455560773, 0.30195015103086004, 0.30229216883592464, 0.3025516159076533, 0.30273075445760833, 0.30283173002820846, 0.302856579725002, 0.3028072397149052, 0.3026855520689235, 0.30249327101811724, 0.30223206868324587, 0.3019035403312755, 0.3015092092057379, 0.3010505309724921, 0.30052889781775044, ...])
    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([-0.0195114 , 0.03743413, 0.08237749, 0...3, -0.08185988, -0.07610816, -0.05997326]), y = array([-0.01205904, -0.04789612, -0.06465889, -0...1, 0.09424726, 0.06853366, 0.03396579]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.0195114 , 0.03743413, 0.08237749, 0...3, -0.08185988, -0.07610816, -0.05997326]), array([-0.01205904, -0.04789612, -0.06465889, -0...1, 0.09424726, 0.06853366, 0.03396579])], 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([-0.0195114 , 0.03743413, 0.08237749, 0...3, -0.08185988, -0.07610816, -0.05997326]), array([-0.01205904, -0.04789612, -0.06465889, -0...1, 0.09424726, 0.06853366, 0.03396579])], 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([[-0.0195114 , 0.03743413, 0.08237749, ... 0.09424726, 0.06853366, -0.01205904]]), 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. , 0.04679591, 0.0801575 , 0.104...3559, 0.91318094, 0.93150674, 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([[-0.0195114 , 0.03743413, 0.08237749, ... 0.09424726, 0.06853366, -0.01205904]]), 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. , 0.04679591, 0.0801575 , 0.104...3559, 0.91318094, 0.93150674, 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>