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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:38:06

Orbital Elements for STF299AB
WDS: STF299AB WDS ID/Discoverer
P: 914.000 Orbital period (years)
a: 5.6 Semi-major axis (arcseconds)
i: 85.2 Inclination (degrees)
Ω: 122.7 Longitude of ascending node (degrees)
T: 2046.700 Epoch of periastron passage (year)
e: 0.9 Eccentricity
ω: 274.7 Longitude of periastron (degrees)
Start-Year: 1568.0 Year
End-Year: 2482.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF299AB
Position: 024318.04+031408.9 Epoch-2000 right ascension and declination
WDS-ID: 02433+0314 WDS designation
Discoverer Code: STF299AB Discover designation and components
ADS number: 2080 Aitken Double Star catalog
HD number: 16970 HD catalog number
Hipparcos number: 12706 Hipparcos catalog number
V1: 3.54 Magnitude of the primary
V2: 6.18 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2023 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF299AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:38:06 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 = [1.051122933710789, 1.0586631044123374, 1.0661959519782311, 1.0737214270767548, 1.0812394803265888, 1.0887500622944055, 1.0962531234923936, 1.1037486143758046, 1.1112364853405687, 1.1187166867207903, 1.1261891687863441, 1.1336538817404236, 1.1411107757170862, 1.148559800778834, 1.1560009069141843, 1.1634340440351563, 1.1708591619748832, 1.178276210485133, 1.1856851392338954, 1.1930858978028502, ...], y_list = [-0.3794991862273759, -0.3747407891180243, -0.36997979979114465, -0.36521625214428893, -0.36045018002021695, -0.3556816172085695, -0.3509105974475838, -0.3461371544257857, -0.3413613217836331, -0.33658313311523436, -0.3318026219699911, -0.3270198218542697, -0.3222347662330695, -0.3174474885316598, -0.3126580221372214, -0.3078664004005344, -0.3030726566375794, -0.2982768241311945, -0.2934789361326813, -0.28867902586348354, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.051122933710789, 1.0586631044123374, 1.0661959519782311, 1.0737214270767548, 1.0812394803265888, 1.0887500622944055, 1.0962531234923936, 1.1037486143758046, 1.1112364853405687, 1.1187166867207903, 1.1261891687863441, 1.1336538817404236, 1.1411107757170862, 1.148559800778834, 1.1560009069141843, 1.1634340440351563, 1.1708591619748832, 1.178276210485133, 1.1856851392338954, 1.1930858978028502, ...], y_list=[-0.3794991862273759, -0.3747407891180243, -0.36997979979114465, -0.36521625214428893, -0.36045018002021695, -0.3556816172085695, -0.3509105974475838, -0.3461371544257857, -0.3413613217836331, -0.33658313311523436, -0.3318026219699911, -0.3270198218542697, -0.3222347662330695, -0.3174474885316598, -0.3126580221372214, -0.3078664004005344, -0.3030726566375794, -0.2982768241311945, -0.2934789361326813, -0.28867902586348354, ...])
    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([-0.10571156, -0.24115854, -0.3665666 , -0...42817252, 0.30556928, 0.17342363, 0.03459375]), y = array([-0.01289553, -0.10324153, -0.18932385, -0...31976205, 0.24648016, 0.1654674 , 0.07802199]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.10571156, -0.24115854, -0.3665666 , -0...42817252, 0.30556928, 0.17342363, 0.03459375]), array([-0.01289553, -0.10324153, -0.18932385, -0...31976205, 0.24648016, 0.1654674 , 0.07802199])], 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([-0.10571156, -0.24115854, -0.3665666 , -0...42817252, 0.30556928, 0.17342363, 0.03459375]), array([-0.01289553, -0.10324153, -0.18932385, -0...31976205, 0.24648016, 0.1654674 , 0.07802199])], 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([[-0.10571156, -0.24115854, -0.3665666 , .... 0.24648016, 0.1654674 , -0.01289553]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.01572589, 0.03041789, 0.043... 0.93923715, 0.95303332, 0.96800467, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=921, 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([[-0.10571156, -0.24115854, -0.3665666 , .... 0.24648016, 0.1654674 , -0.01289553]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.01572589, 0.03041789, 0.043... 0.93923715, 0.95303332, 0.96800467, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 921, 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>