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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:46:22

Orbital Elements for STT51
WDS: STT51 WDS ID/Discoverer
P: 598.000 Orbital period (years)
a: 0.998 Semi-major axis (arcseconds)
i: 43.0 Inclination (degrees)
Ω: 148.6 Longitude of ascending node (degrees)
T: 2051.690 Epoch of periastron passage (year)
e: 0.718 Eccentricity
ω: 308.9 Longitude of periastron (degrees)
Start-Year: 1726.0 Year
End-Year: 2324.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT51
Position: 031257.08+441714.7 Epoch-2000 right ascension and declination
WDS-ID: 03130+4417 WDS designation
Discoverer Code: STT51 Discover designation and components
ADS number: 2397 Aitken Double Star catalog
HD number: 19822 HD catalog number
Hipparcos number: 14969 Hipparcos catalog number
V1: 8.51 Magnitude of the primary
V2: 8.74 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STT51
--> -->
 
 
ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:46:22 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 = [1.3815768587182693, 1.3824307479299225, 1.3832540682498737, 1.3840468378610222, 1.3848090741565446, 1.3855407937422302, 1.386242012438707, 1.38691274528356, 1.3875530065333455, 1.388162809665496, 1.3887421673801246, 1.3892910916363543, 1.3898095935013386, 1.3902976834069176, 1.39075537095807, 1.3911826649904409, 1.3915795735713838, 1.391946104000931, 1.392282262812686, 1.3925880557746353, ...], y_list = [0.30518539333311295, 0.3092299228505824, 0.313267614562834, 0.3172983874269771, 0.32132216041970046, 0.3253388525271469, 0.32934838273481637, 0.3333506700175178, 0.33734563332935336, 0.341333191593758, 0.3453132636935396, 0.349285768718522, 0.35325062483003994, 0.35720775111472075, 0.3611570661844305, 0.36509848856351185, 0.36903193667845635, 0.37295732884767, 0.3768745832713178, 0.3807836180212268, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.3815768587182693, 1.3824307479299225, 1.3832540682498737, 1.3840468378610222, 1.3848090741565446, 1.3855407937422302, 1.386242012438707, 1.38691274528356, 1.3875530065333455, 1.388162809665496, 1.3887421673801246, 1.3892910916363543, 1.3898095935013386, 1.3902976834069176, 1.39075537095807, 1.3911826649904409, 1.3915795735713838, 1.391946104000931, 1.392282262812686, 1.3925880557746353, ...], y_list=[0.30518539333311295, 0.3092299228505824, 0.313267614562834, 0.3172983874269771, 0.32132216041970046, 0.3253388525271469, 0.32934838273481637, 0.3333506700175178, 0.33734563332935336, 0.341333191593758, 0.3453132636935396, 0.349285768718522, 0.35325062483003994, 0.35720775111472075, 0.3611570661844305, 0.36509848856351185, 0.36903193667845635, 0.37295732884767, 0.3768745832713178, 0.3807836180212268, ...])
    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([-2.23835178e-01, -2.26614685e-01, -2.2829....09352539e-01, -2.15147585e-01, -2.19995755e-01]), y = array([-0.00366328, -0.02748963, -0.0511825 , -0...09077105, 0.06749313, 0.0439333 , 0.02018094]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-2.23835178e-01, -2.26614685e-01, -2.2829....09352539e-01, -2.15147585e-01, -2.19995755e-01]), array([-0.00366328, -0.02748963, -0.0511825 , -0...09077105, 0.06749313, 0.0439333 , 0.02018094])], 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([-2.23835178e-01, -2.26614685e-01, -2.2829....09352539e-01, -2.15147585e-01, -2.19995755e-01]), array([-0.00366328, -0.02748963, -0.0511825 , -0...09077105, 0.06749313, 0.0439333 , 0.02018094])], 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([[-0.22383518, -0.22661468, -0.2282966 , .... 0.06749313, 0.0439333 , -0.00366328]]), 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. , 0.00518155, 0.01031225, 0.015... 0.97907752, 0.9843082 , 0.98954896, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=605, 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([[-0.22383518, -0.22661468, -0.2282966 , .... 0.06749313, 0.0439333 , -0.00366328]]), 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. , 0.00518155, 0.01031225, 0.015... 0.97907752, 0.9843082 , 0.98954896, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 605, 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>