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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:36:29

Orbital Elements for RST3557
WDS: RST3557 WDS ID/Discoverer
P: 220.000 Orbital period (years)
a: 0.463 Semi-major axis (arcseconds)
i: 97.4 Inclination (degrees)
Ω: 123.6 Longitude of ascending node (degrees)
T: 2030.760 Epoch of periastron passage (year)
e: 0.2 Eccentricity
ω: 309.0 Longitude of periastron (degrees)
Start-Year: 1915.0 Year
End-Year: 2135.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST3557
Position: 075321.16-523913.6 Epoch-2000 right ascension and declination
WDS-ID: 07534-5239 WDS designation
Discoverer Code: RST3557 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 38526 Hipparcos catalog number
V1: 9.81 Magnitude of the primary
V2: 11.50 Magnitude of the secondary
Equinox: 2000 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 RST3557
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:36:29 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 = [0.21548561488087445, 0.22355576312388273, 0.23152004941764076, 0.2393748343926034, 0.2471165072926559, 0.25474148446714706, 0.26224620769625817, 0.2696271438913772, 0.27688078154707474, 0.2840036316517546, 0.29099222535120983, 0.29784311298983235, 0.3045528629891764, 0.31111806078521, 0.31753530782559797, 0.32380122062851696, 0.3299124299047101, 0.33586557974470105, 0.3416573268733112, 0.3472843399738415, ...], y_list = [0.2154487516080483, 0.21993240325364316, 0.22431190837740492, 0.22858532111422883, 0.23275071995893978, 0.23680620690520562, 0.2407499065194402, 0.24457996575469548, 0.24829455208999643, 0.25189185401998343, 0.255370079870703, 0.2587274573568213, 0.26196223307600114, 0.26507267205621154, 0.2680570573569013, 0.2709136897251008, 0.2736408873076709, 0.2762369854210787, 0.27870033638024627, 0.2810293093881822, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.21548561488087445, 0.22355576312388273, 0.23152004941764076, 0.2393748343926034, 0.2471165072926559, 0.25474148446714706, 0.26224620769625817, 0.2696271438913772, 0.27688078154707474, 0.2840036316517546, 0.29099222535120983, 0.29784311298983235, 0.3045528629891764, 0.31111806078521, 0.31753530782559797, 0.32380122062851696, 0.3299124299047101, 0.33586557974470105, 0.3416573268733112, 0.3472843399738415, ...], y_list=[0.2154487516080483, 0.21993240325364316, 0.22431190837740492, 0.22858532111422883, 0.23275071995893978, 0.23680620690520562, 0.2407499065194402, 0.24457996575469548, 0.24829455208999643, 0.25189185401998343, 0.255370079870703, 0.2587274573568213, 0.26196223307600114, 0.26507267205621154, 0.2680570573569013, 0.2709136897251008, 0.2736408873076709, 0.2762369854210787, 0.27870033638024627, 0.2810293093881822, ...])
    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([-1.20250592e-01, -1.29167067e-01, -1.3800...27e-02, -1.02202791e-01, -1.11260389e-01]), y = array([-0.00273533, -0.00936242, -0.0159837 , -0...3, 0.01714002, 0.01051988, 0.00389345]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.20250592e-01, -1.29167067e-01, -1.3800...27e-02, -1.02202791e-01, -1.11260389e-01]), array([-0.00273533, -0.00936242, -0.0159837 , -0...3, 0.01714002, 0.01051988, 0.00389345])], 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([-1.20250592e-01, -1.29167067e-01, -1.3800...27e-02, -1.02202791e-01, -1.11260389e-01]), array([-0.00273533, -0.00936242, -0.0159837 , -0...3, 0.01714002, 0.01051988, 0.00389345])], 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([[-1.20250592e-01, -1.29167067e-01, -1.380...e-02, 1.05198802e-02, -2.73532865e-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. , 0.00592665, 0.01181715, 0.017...107 , 0.98204277, 0.9880542 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=227, 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([[-1.20250592e-01, -1.29167067e-01, -1.380...e-02, 1.05198802e-02, -2.73532865e-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. , 0.00592665, 0.01181715, 0.017...107 , 0.98204277, 0.9880542 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 227, 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>