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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:27:48

Orbital Elements for STF113A,BC
WDS: STF113A,BC WDS ID/Discoverer
P: 650.000 Orbital period (years)
a: 1.324 Semi-major axis (arcseconds)
i: 43.5 Inclination (degrees)
Ω: 87.2 Longitude of ascending node (degrees)
T: 1686.000 Epoch of periastron passage (year)
e: 0.64 Eccentricity
ω: 106.7 Longitude of periastron (degrees)
Start-Year: 1700.0 Year
End-Year: 2350.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF113A,BC
Position: 011948.30-003032.5 Epoch-2000 right ascension and declination
WDS-ID: 01198-0031 WDS designation
Discoverer Code: STF113A,BC Discover designation and components
ADS number: 1081 Aitken Double Star catalog
HD number: 8036 HD catalog number
Hipparcos number: 6226 Hipparcos catalog number
V1: 6.45 Magnitude of the primary
V2: 6.99 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 STF113A,BC


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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:27:49 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>
    956 
    957 # Smooth curve if necessary
=>  958 xa_smooth, ya_smooth = Q_get_smoothed_orbit(xa_list, ya_list)
    959 plt.plot(xa_smooth, ya_smooth, label=f'Orbit of {wds}', color='#528B8B')
    960 
xa_smooth undefined, ya_smooth undefined, Q_get_smoothed_orbit = <function Q_get_smoothed_orbit>, xa_list = [-0.447220078379466, -0.4661888310794365, -0.4845119743668391, -0.5021921950385507, -0.5192345937753076, -0.535646369457634, -0.5514364981272512, -0.5666154509295409, -0.5811949266518366, -0.5951876102521371, -0.6086069562702987, -0.6214669967314748, -0.633782172559878, -0.6455671871128312, -0.6568368801879553, -0.6676061207192534, -0.6778897163329461, -0.6877023379571185, -0.697058457750577, -0.7059722987196033, ...], ya_list = [0.21857319523916655, 0.20673072937205042, 0.19460177166441292, 0.18221440010574166, 0.1695954285992668, 0.15677031150251966, 0.1437630976467721, 0.13059639973316328, 0.11729139409490945, 0.10386783915426191, 0.0903441095677742, 0.07673724240453597, 0.0630629921771185, 0.049335892016075494, 0.03556931872565413, 0.021775559868144587, 0.007965881390155506, -0.005849405376410309, -0.01966087823226086, -0.033459940810672446, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.447220078379466, -0.4661888310794365, -0.4845119743668391, -0.5021921950385507, -0.5192345937753076, -0.535646369457634, -0.5514364981272512, -0.5666154509295409, -0.5811949266518366, -0.5951876102521371, -0.6086069562702987, -0.6214669967314748, -0.633782172559878, -0.6455671871128312, -0.6568368801879553, -0.6676061207192534, -0.6778897163329461, -0.6877023379571185, -0.697058457750577, -0.7059722987196033, ...], y_list=[0.21857319523916655, 0.20673072937205042, 0.19460177166441292, 0.18221440010574166, 0.1695954285992668, 0.15677031150251966, 0.1437630976467721, 0.13059639973316328, 0.11729139409490945, 0.10386783915426191, 0.0903441095677742, 0.07673724240453597, 0.0630629921771185, 0.049335892016075494, 0.03556931872565413, 0.021775559868144587, 0.007965881390155506, -0.005849405376410309, -0.01966087823226086, -0.033459940810672446, ...])
    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([-0.68770234, -0.69705846, -0.7059723 , -0...9, -0.65683688, -0.66760612, -0.67788972]), y = array([-5.84940538e-03, -1.96608782e-02, -3.3459....55693187e-02, 2.17755599e-02, 7.96588139e-03]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.68770234, -0.69705846, -0.7059723 , -0...9, -0.65683688, -0.66760612, -0.67788972]), array([-5.84940538e-03, -1.96608782e-02, -3.3459....55693187e-02, 2.17755599e-02, 7.96588139e-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([-0.68770234, -0.69705846, -0.7059723 , -0...9, -0.65683688, -0.66760612, -0.67788972]), array([-5.84940538e-03, -1.96608782e-02, -3.3459....55693187e-02, 2.17755599e-02, 7.96588139e-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([[-0.68770234, -0.69705846, -0.7059723 , .... 0.03556932, 0.02177556, -0.00584941]]), 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. , 0.00267007, 0.00529942, 0.007...8377, 0.99173134, 0.99453229, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=657, 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([[-0.68770234, -0.69705846, -0.7059723 , .... 0.03556932, 0.02177556, -0.00584941]]), 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. , 0.00267007, 0.00529942, 0.007...8377, 0.99173134, 0.99453229, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 657, 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>