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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:58:38

Orbital Elements for STT220
WDS: STT220 WDS ID/Discoverer
P: 750.000 Orbital period (years)
a: 1.7 Semi-major axis (arcseconds)
i: 79.2 Inclination (degrees)
Ω: 58.2 Longitude of ascending node (degrees)
T: 2530.000 Epoch of periastron passage (year)
e: 0.363 Eccentricity
ω: 300.6 Longitude of periastron (degrees)
Start-Year: 1650.0 Year
End-Year: 2400.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT220
Position: 102911.36+100920.0 Epoch-2000 right ascension and declination
WDS-ID: 10292+1009 WDS designation
Discoverer Code: STT220 Discover designation and components
ADS number: 7792 Aitken Double Star catalog
HD number: 90791 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 7.51 Magnitude of the primary
V2: 8.59 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1997 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STT220
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:58:38 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 = [1.3722642304503696, 1.3657544874754763, 1.3591339580262007, 1.3524020722549874, 1.345558263151292, 1.3386019668479057, 1.3315326229401763, 1.3243496748185695, 1.317052570014997, 1.3096407605633666, 1.3021137033748302, 1.2944708606281699, 1.2867117001758277, 1.2788356959660567, 1.2708423284816919, 1.2627310851960325, 1.2545014610463756, 1.2461529589257019, 1.2376850901930234, 1.2290973752029746, ...], y_list = [-0.7524140352231784, -0.7457642671504733, -0.7390540050246612, -0.7322831912828919, -0.725451775010627, -0.7185597122063644, -0.7116069660545993, -0.7045935072072489, -0.6975193140737228, -0.6903843731198412, -0.6831886791758435, -0.6759322357536284, -0.6686150553734921, -0.6612371599005287, -0.6537985808909121, -0.6462993599482459, -0.6387395490902004, -0.6311192111256156, -0.6234384200422495, -0.6156972614053938, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.3722642304503696, 1.3657544874754763, 1.3591339580262007, 1.3524020722549874, 1.345558263151292, 1.3386019668479057, 1.3315326229401763, 1.3243496748185695, 1.317052570014997, 1.3096407605633666, 1.3021137033748302, 1.2944708606281699, 1.2867117001758277, 1.2788356959660567, 1.2708423284816919, 1.2627310851960325, 1.2545014610463756, 1.2461529589257019, 1.2376850901930234, 1.2290973752029746, ...], y_list=[-0.7524140352231784, -0.7457642671504733, -0.7390540050246612, -0.7322831912828919, -0.725451775010627, -0.7185597122063644, -0.7116069660545993, -0.7045935072072489, -0.6975193140737228, -0.6903843731198412, -0.6831886791758435, -0.6759322357536284, -0.6686150553734921, -0.6612371599005287, -0.6537985808909121, -0.6462993599482459, -0.6387395490902004, -0.6311192111256156, -0.6234384200422495, -0.6156972614053938, ...])
    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([-0.66049408, -0.65279672, -0.64506962, -0...9, -0.68340238, -0.67579746, -0.66816118]), y = array([-0.00455635, -0.01090337, -0.01724989, -0...9, 0.0144848 , 0.00813803, 0.00179088]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.66049408, -0.65279672, -0.64506962, -0...9, -0.68340238, -0.67579746, -0.66816118]), array([-0.00455635, -0.01090337, -0.01724989, -0...9, 0.0144848 , 0.00813803, 0.00179088])], 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([-0.66049408, -0.65279672, -0.64506962, -0...9, -0.68340238, -0.67579746, -0.66816118]), array([-0.00455635, -0.01090337, -0.01724989, -0...9, 0.0144848 , 0.00813803, 0.00179088])], 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([[-0.66049408, -0.65279672, -0.64506962, .... 0.0144848 , 0.00813803, -0.00455635]]), 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. , 0.00147385, 0.00295105, 0.004...3971, 0.99559935, 0.99706266, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=757, 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([[-0.66049408, -0.65279672, -0.64506962, .... 0.0144848 , 0.00813803, -0.00455635]]), 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. , 0.00147385, 0.00295105, 0.004...3971, 0.99559935, 0.99706266, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 757, 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>