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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:26:56

Orbital Elements for STT287
WDS: STT287 WDS ID/Discoverer
P: 340.000 Orbital period (years)
a: 0.91 Semi-major axis (arcseconds)
i: 67.0 Inclination (degrees)
Ω: 166.9 Longitude of ascending node (degrees)
T: 2067.000 Epoch of periastron passage (year)
e: 0.34 Eccentricity
ω: 306.0 Longitude of periastron (degrees)
Start-Year: 1855.0 Year
End-Year: 2195.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT287
Position: 145127.53+445542.6 Epoch-2000 right ascension and declination
WDS-ID: 14515+4456 WDS designation
Discoverer Code: STT287 Discover designation and components
ADS number: 9418 Aitken Double Star catalog
HD number: 131315 HD catalog number
Hipparcos number: 72666 Hipparcos catalog number
V1: 8.40 Magnitude of the primary
V2: 8.62 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STT287
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:26:56 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 = [0.48967551587450325, 0.4924277980246441, 0.4951009430638006, 0.49769500556818325, 0.5002100421097023, 0.5026461110926651, 0.5050032725990901, 0.5072815882422509, 0.509481121028093, 0.511601935224179, 0.5136440962358394, 0.5156076704892265, 0.5174927253209745, 0.5192993288741999, 0.521027550000582, 0.5226774581682743, 0.5242491233754233, 0.5257426160690754, 0.5271580070692629, 0.5284953674980842, ...], y_list = [0.1357142269102303, 0.1479603082943404, 0.16018261315782953, 0.17237933385379464, 0.18454868523621304, 0.19668890382530002, 0.20879824699392158, 0.22087499217429743, 0.23291743608424184, 0.24492389397226572, 0.25689269888081967, 0.26882220092704334, 0.28071076660032357, 0.2925567780760852, 0.30435863254517614, 0.31611474155824765, 0.3278235303845826, 0.3394834373847916, 0.351092913396845, 0.36265042113492973, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.48967551587450325, 0.4924277980246441, 0.4951009430638006, 0.49769500556818325, 0.5002100421097023, 0.5026461110926651, 0.5050032725990901, 0.5072815882422509, 0.509481121028093, 0.511601935224179, 0.5136440962358394, 0.5156076704892265, 0.5174927253209745, 0.5192993288741999, 0.521027550000582, 0.5226774581682743, 0.5242491233754233, 0.5257426160690754, 0.5271580070692629, 0.5284953674980842, ...], y_list=[0.1357142269102303, 0.1479603082943404, 0.16018261315782953, 0.17237933385379464, 0.18454868523621304, 0.19668890382530002, 0.20879824699392158, 0.22087499217429743, 0.23291743608424184, 0.24492389397226572, 0.25689269888081967, 0.26882220092704334, 0.28071076660032357, 0.2925567780760852, 0.30435863254517614, 0.31611474155824765, 0.3278235303845826, 0.3394834373847916, 0.351092913396845, 0.36265042113492973, ...])
    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([-2.51350395e-01, -2.54171345e-01, -2.5671...79e-01, -2.44903304e-01, -2.48258636e-01]), y = array([-1.83328921e-02, -4.09066888e-02, -6.3435...89e-02, 2.68498574e-02, 4.26071405e-03]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-2.51350395e-01, -2.54171345e-01, -2.5671...79e-01, -2.44903304e-01, -2.48258636e-01]), array([-1.83328921e-02, -4.09066888e-02, -6.3435...89e-02, 2.68498574e-02, 4.26071405e-03])], 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([-2.51350395e-01, -2.54171345e-01, -2.5671...79e-01, -2.44903304e-01, -2.48258636e-01]), array([-1.83328921e-02, -4.09066888e-02, -6.3435...89e-02, 2.68498574e-02, 4.26071405e-03])], 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([[-2.51350395e-01, -2.54171345e-01, -2.567...e-02, 2.68498574e-02, -1.83328921e-02]]), 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. , 0.00565544, 0.01129168, 0.016...9618, 0.98297386, 0.98865391, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=347, 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([[-2.51350395e-01, -2.54171345e-01, -2.567...e-02, 2.68498574e-02, -1.83328921e-02]]), 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. , 0.00565544, 0.01129168, 0.016...9618, 0.98297386, 0.98865391, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 347, 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>