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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:12:19

Orbital Elements for STF1663
WDS: STF1663 WDS ID/Discoverer
P: 986.000 Orbital period (years)
a: 0.701 Semi-major axis (arcseconds)
i: 141.5 Inclination (degrees)
Ω: 113.7 Longitude of ascending node (degrees)
T: 1671.000 Epoch of periastron passage (year)
e: 0.07 Eccentricity
ω: 280.9 Longitude of periastron (degrees)
Start-Year: 1532.0 Year
End-Year: 2518.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1663
Position: 123710.81+211152.5 Epoch-2000 right ascension and declination
WDS-ID: 12372+2112 WDS designation
Discoverer Code: STF1663 Discover designation and components
ADS number: 8611 Aitken Double Star catalog
HD number: 109782 HD catalog number
Hipparcos number: 61584 Hipparcos catalog number
V1: 8.03 Magnitude of the primary
V2: 9.16 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1663
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:12:19 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 = [0.5915667893198557, 0.589445840305789, 0.5872977077611302, 0.5851224590378231, 0.5829201630686389, 0.5806908903694996, 0.5784347130416571, 0.5761517047737379, 0.5738419408436274, 0.5715054981202159, 0.5691424550649897, 0.5667528917334728, 0.5643368897765162, 0.5618945324414262, 0.5594259045729474, 0.5569310926140725, 0.5544101846067072, 0.5518632701921616, 0.5492904406114857, 0.5466917887056365, ...], y_list = [-0.13641601370648532, -0.1400593892915783, -0.1436963057068431, -0.1473265874687222, -0.15095005903157904, -0.15456654479924067, -0.15817586913663145, -0.16177785638147985, -0.1653723308561347, -0.16895911687945314, -0.17253803877877857, -0.17610892090200295, -0.1796715876297078, -0.18322586338739957, -0.18677157265780464, -0.1903085399932682, -0.1938365900282088, -0.19735554749166767, -0.20086523721992094, -0.20436548416917352, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.5915667893198557, 0.589445840305789, 0.5872977077611302, 0.5851224590378231, 0.5829201630686389, 0.5806908903694996, 0.5784347130416571, 0.5761517047737379, 0.5738419408436274, 0.5715054981202159, 0.5691424550649897, 0.5667528917334728, 0.5643368897765162, 0.5618945324414262, 0.5594259045729474, 0.5569310926140725, 0.5544101846067072, 0.5518632701921616, 0.5492904406114857, 0.5466917887056365, ...], y_list=[-0.13641601370648532, -0.1400593892915783, -0.1436963057068431, -0.1473265874687222, -0.15095005903157904, -0.15456654479924067, -0.15817586913663145, -0.16177785638147985, -0.1653723308561347, -0.16895911687945314, -0.17253803877877857, -0.17610892090200295, -0.1796715876297078, -0.18322586338739957, -0.18677157265780464, -0.1903085399932682, -0.1938365900282088, -0.19735554749166767, -0.20086523721992094, -0.20436548416917352, ...])
    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([-0.67975289, -0.68019878, -0.6806184 , -0...4, -0.6782581 , -0.6787825 , -0.67928078]), y = array([-0.0024497 , -0.00604767, -0.0096454 , -0...2, 0.0083442 , 0.00474637, 0.00114836]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.67975289, -0.68019878, -0.6806184 , -0...4, -0.6782581 , -0.6787825 , -0.67928078]), array([-0.0024497 , -0.00604767, -0.0096454 , -0...2, 0.0083442 , 0.00474637, 0.00114836])], 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([-0.67975289, -0.68019878, -0.6806184 , -0...4, -0.6782581 , -0.6787825 , -0.67928078]), array([-0.0024497 , -0.00604767, -0.0096454 , -0...2, 0.0083442 , 0.00474637, 0.00114836])], 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([[-0.67975289, -0.68019878, -0.6806184 , .... 0.0083442 , 0.00474637, -0.0024497 ]]), 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([0.00000000e+00, 9.21410569e-04, 1.8419648... 9.97230535e-01, 9.98154579e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=993, 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([[-0.67975289, -0.68019878, -0.6806184 , .... 0.0083442 , 0.00474637, -0.0024497 ]]), 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([0.00000000e+00, 9.21410569e-04, 1.8419648... 9.97230535e-01, 9.98154579e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 993, 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>