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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:29:27

Orbital Elements for HDS2143
WDS: HDS2143 WDS ID/Discoverer
P: 66.000 Orbital period (years)
a: 0.229 Semi-major axis (arcseconds)
i: 132.0 Inclination (degrees)
Ω: 354.0 Longitude of ascending node (degrees)
T: 2063.000 Epoch of periastron passage (year)
e: 0.962 Eccentricity
ω: 275.0 Longitude of periastron (degrees)
Start-Year: 1992.0 Year
End-Year: 2058.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2143
Position: 151511.37+045621.7 Epoch-2000 right ascension and declination
WDS-ID: 15152+0456 WDS designation
Discoverer Code: HDS2143 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 135482 HD catalog number
Hipparcos number: 74649 Hipparcos catalog number
V1: 5.61 Magnitude of the primary
V2: 7.90 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS2143
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:29:27 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 = [0.11272891131002222, 0.09568501660728959, 0.07657743176355639, 0.05458180848115327, 0.027871936663685586, -0.005689563287514843, 0.04173911608310078, 0.07164057272407362, 0.09526319608189919, 0.1152766806191166, 0.13279864891027163, 0.1484324867592182, 0.1625511331710979, 0.17540560656189128, 0.18717510980631405, 0.19799321045370594, 0.20796278484264386, 0.2171651364655447, 0.22566585764733937, 0.23351875926341809, ...], y_list = [-0.0903012146954674, -0.08471645797420713, -0.07728790457822778, -0.06689280076726285, -0.050432259408222796, 0.0013606041121871073, 0.033785448425597484, 0.03670793731829976, 0.03619387801200751, 0.03426700548458102, 0.03158566989714325, 0.028449182491367395, 0.025019147910421216, 0.02139272224433005, 0.017632835503016142, 0.013782566365874412, 0.009872704099870679, 0.005926038935464073, 0.0019599443719487274, -0.002011992848413251, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.11272891131002222, 0.09568501660728959, 0.07657743176355639, 0.05458180848115327, 0.027871936663685586, -0.005689563287514843, 0.04173911608310078, 0.07164057272407362, 0.09526319608189919, 0.1152766806191166, 0.13279864891027163, 0.1484324867592182, 0.1625511331710979, 0.17540560656189128, 0.18717510980631405, 0.19799321045370594, 0.20796278484264386, 0.2171651364655447, 0.22566585764733937, 0.23351875926341809, ...], y_list=[-0.0903012146954674, -0.08471645797420713, -0.07728790457822778, -0.06689280076726285, -0.050432259408222796, 0.0013606041121871073, 0.033785448425597484, 0.03670793731829976, 0.03619387801200751, 0.03426700548458102, 0.03158566989714325, 0.028449182491367395, 0.025019147910421216, 0.02139272224433005, 0.017632835503016142, 0.013782566365874412, 0.009872704099870679, 0.005926038935464073, 0.0019599443719487274, -0.002011992848413251, ...])
    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([ 0.02787194, 0.05458181, 0.07657743, 0... , 0.07164057, 0.04173912, -0.00568956]), y = array([-0.05043226, -0.0668928 , -0.0772879 , -0...8, 0.03670794, 0.03378545, 0.0013606 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([ 0.02787194, 0.05458181, 0.07657743, 0... , 0.07164057, 0.04173912, -0.00568956]), array([-0.05043226, -0.0668928 , -0.0772879 , -0...8, 0.03670794, 0.03378545, 0.0013606 ])], 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([ 0.02787194, 0.05458181, 0.07657743, 0... , 0.07164057, 0.04173912, -0.00568956]), array([-0.05043226, -0.0668928 , -0.0772879 , -0...8, 0.03670794, 0.03378545, 0.0013606 ])], 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([[ 0.02787194, 0.05458181, 0.07657743, ... 0.03670794, 0.03378545, -0.05043226]]), 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. , 0.04683733, 0.0831556 , 0.113...5937, 0.82773255, 0.87258338, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=73, 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([[ 0.02787194, 0.05458181, 0.07657743, ... 0.03670794, 0.03378545, -0.05043226]]), 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. , 0.04683733, 0.0831556 , 0.113...5937, 0.82773255, 0.87258338, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 73, 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>