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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:00:24

Orbital Elements for HDS1544
WDS: HDS1544 WDS ID/Discoverer
P: 78.000 Orbital period (years)
a: 0.224 Semi-major axis (arcseconds)
i: 127.5 Inclination (degrees)
Ω: 96.3 Longitude of ascending node (degrees)
T: 2003.800 Epoch of periastron passage (year)
e: 0.319 Eccentricity
ω: 175.0 Longitude of periastron (degrees)
Start-Year: 1986.0 Year
End-Year: 2064.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1544
Position: 104753.55-641546.3 Epoch-2000 right ascension and declination
WDS-ID: 10479-6416 WDS designation
Discoverer Code: HDS1544 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 93738 HD catalog number
Hipparcos number: 52815 Hipparcos catalog number
V1: 6.74 Magnitude of the primary
V2: 8.10 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS1544
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:00:24 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 = [-0.14118845520156575, -0.12468909236684467, -0.10745419945546669, -0.08953702269533853, -0.07100558357797014, -0.05194597288212671, -0.03246619083026538, -0.012700493278278399, 0.007185908334346952, 0.026992129997506362, 0.04647749524857655, 0.06535900184248665, 0.0833117989970954, 0.09997447008873687, 0.11496097888059752, 0.1278805450031619, 0.13836516028291748, 0.14610198498349336, 0.1508651895843636, 0.15254028817076698, ...], y_list = [0.10599555359264168, 0.1101099339992063, 0.11357345824349165, 0.11631409350484852, 0.1182543754276497, 0.11931160493034883, 0.1193984595017684, 0.11842421835836578, 0.11629686111169371, 0.1129263563131824, 0.10822948596535556, 0.10213651235280181, 0.09459982005379897, 0.08560428291405288, 0.0751784641054022, 0.06340491157694232, 0.05042701194520656, 0.03644958328655225, 0.021731135350654338, 0.006567660170081333, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.14118845520156575, -0.12468909236684467, -0.10745419945546669, -0.08953702269533853, -0.07100558357797014, -0.05194597288212671, -0.03246619083026538, -0.012700493278278399, 0.007185908334346952, 0.026992129997506362, 0.04647749524857655, 0.06535900184248665, 0.0833117989970954, 0.09997447008873687, 0.11496097888059752, 0.1278805450031619, 0.13836516028291748, 0.14610198498349336, 0.1508651895843636, 0.15254028817076698, ...], y_list=[0.10599555359264168, 0.1101099339992063, 0.11357345824349165, 0.11631409350484852, 0.1182543754276497, 0.11931160493034883, 0.1193984595017684, 0.11842421835836578, 0.11629686111169371, 0.1129263563131824, 0.10822948596535556, 0.10213651235280181, 0.09459982005379897, 0.08560428291405288, 0.0751784641054022, 0.06340491157694232, 0.05042701194520656, 0.03644958328655225, 0.021731135350654338, 0.006567660170081333, ...])
    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([-0.28991328, -0.2918534 , -0.29294824, -0...27359785, -0.27896968, -0.2834764 , -0.28712264]), y = array([-0.00656837, -0.01465213, -0.02269349, -0...02571595, 0.01770194, 0.00963293, 0.0015346 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.28991328, -0.2918534 , -0.29294824, -0...27359785, -0.27896968, -0.2834764 , -0.28712264]), array([-0.00656837, -0.01465213, -0.02269349, -0...02571595, 0.01770194, 0.00963293, 0.0015346 ])], 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([-0.28991328, -0.2918534 , -0.29294824, -0...27359785, -0.27896968, -0.2834764 , -0.28712264]), array([-0.00656837, -0.01465213, -0.02269349, -0...02571595, 0.01770194, 0.00963293, 0.0015346 ])], 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([[-0.28991328, -0.2918534 , -0.29294824, -...2571595, 0.01770194, 0.00963293, -0.00656837]]), w=array([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. , 0.00736195, 0.01454876, 0.021... 0.96783353, 0.97637728, 0.98456187, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=85, 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([[-0.28991328, -0.2918534 , -0.29294824, -...2571595, 0.01770194, 0.00963293, -0.00656837]]), w = array([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. , 0.00736195, 0.01454876, 0.021... 0.96783353, 0.97637728, 0.98456187, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 85, 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>