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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:51:49

Orbital Elements for STT337
WDS: STT337 WDS ID/Discoverer
P: 1000.000 Orbital period (years)
a: 1.389 Semi-major axis (arcseconds)
i: 100.1 Inclination (degrees)
Ω: 134.1 Longitude of ascending node (degrees)
T: 1787.000 Epoch of periastron passage (year)
e: 0.613 Eccentricity
ω: 141.7 Longitude of periastron (degrees)
Start-Year: 1525.0 Year
End-Year: 2525.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT337
Position: 175034.90+071358.0 Epoch-2000 right ascension and declination
WDS-ID: 17506+0714 WDS designation
Discoverer Code: STT337 Discover designation and components
ADS number: 10828 Aitken Double Star catalog
HD number: 162405 HD catalog number
Hipparcos number: 87325 Hipparcos catalog number
V1: 8.18 Magnitude of the primary
V2: 8.98 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT337
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:51:49 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 = [-1.2848030993452149, -1.2836836011705313, -1.2825428822050005, -1.281380846018861, -1.280197395337808, -1.2789924320330162, -1.277765857111013, -1.2765175707034109, -1.2752474720564897, -1.2739554595206255, -1.2726414305395684, -1.271305281639563, -1.2699469084183106, -1.2685662055337699, -1.2671630666927944, -1.2657373846396032, -1.2642890511440794, -1.2628179569899016, -1.2613239919624954, -1.2598070448368106, ...], y_list = [-1.3149932090578262, -1.31254013160246, -1.3100653563435434, -1.3075688064310966, -1.3050504043893512, -1.3025100721105392, -1.2999477308486178, -1.297363301212916, -1.2947567031617158, -1.2921278559957534, -1.2894766783516503, -1.286803088195273, -1.2841070028150117, -1.2813883388149858, -1.278647012108176, -1.275882937909477, -1.273096030728668, -1.270286204363317, -1.2674533718915921, -1.264597445665007, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-1.2848030993452149, -1.2836836011705313, -1.2825428822050005, -1.281380846018861, -1.280197395337808, -1.2789924320330162, -1.277765857111013, -1.2765175707034109, -1.2752474720564897, -1.2739554595206255, -1.2726414305395684, -1.271305281639563, -1.2699469084183106, -1.2685662055337699, -1.2671630666927944, -1.2657373846396032, -1.2642890511440794, -1.2628179569899016, -1.2613239919624954, -1.2598070448368106, ...], y_list=[-1.3149932090578262, -1.31254013160246, -1.3100653563435434, -1.3075688064310966, -1.3050504043893512, -1.3025100721105392, -1.2999477308486178, -1.297363301212916, -1.2947567031617158, -1.2921278559957534, -1.2894766783516503, -1.286803088195273, -1.2841070028150117, -1.2813883388149858, -1.278647012108176, -1.275882937909477, -1.273096030728668, -1.270286204363317, -1.2674533718915921, -1.264597445665007, ...])
    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([-0.17557905, -0.18673126, -0.19782169, ..., -0.14177388, -0.15309796, -0.16436718]), y = array([-0.00779174, -0.01785214, -0.02790665, ..., 0.02239129, 0.01233351, 0.00227129]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.17557905, -0.18673126, -0.19782169, ..., -0.14177388, -0.15309796, -0.16436718]), array([-0.00779174, -0.01785214, -0.02790665, ..., 0.02239129, 0.01233351, 0.00227129])], 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([-0.17557905, -0.18673126, -0.19782169, ..., -0.14177388, -0.15309796, -0.16436718]), array([-0.00779174, -0.01785214, -0.02790665, ..., 0.02239129, 0.01233351, 0.00227129])], 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([[-0.17557905, -0.18673126, -0.19782169, .... 0.02239129, 0.01233351, -0.00779174]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0. , 0.00281971, 0.00563007, ..., 0.99149193, 0.99433535, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1007, 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([[-0.17557905, -0.18673126, -0.19782169, .... 0.02239129, 0.01233351, -0.00779174]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0. , 0.00281971, 0.00563007, ..., 0.99149193, 0.99433535, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1007, 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>