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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:49:00

Orbital Elements for STF2241AB
WDS: STF2241AB WDS ID/Discoverer
P: 10000.000 Orbital period (years)
a: 31.0 Semi-major axis (arcseconds)
i: 55.0 Inclination (degrees)
Ω: 16.0 Longitude of ascending node (degrees)
T: 3817.000 Epoch of periastron passage (year)
e: 0.28 Eccentricity
ω: 99.0 Longitude of periastron (degrees)
Start-Year: -2975.0 Year
End-Year: 7025.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2241AB
Position: 174156.36+720855.8 Epoch-2000 right ascension and declination
WDS-ID: 17419+7209 WDS designation
Discoverer Code: STF2241AB Discover designation and components
ADS number: 10759 Aitken Double Star catalog
HD number: 162003 HD catalog number
Hipparcos number: 86614 Hipparcos catalog number
V1: 4.60 Magnitude of the primary
V2: 5.59 Magnitude of the secondary
Equinox: Equinox
Date: 2001 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF2241AB
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:49:00 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 = [22.341097102765826, 22.344119371540085, 22.347136173841328, 22.35014751058032, 22.353153382668086, 22.356153791015892, 22.359148736535275, 22.36213822013803, 22.365122242736206, 22.368100805242097, 22.371073908568256, 22.374041553627507, 22.377003741332896, 22.379960472597748, 22.382911748335623, 22.385857569460338, 22.388797936885968, 22.391732851526804, 22.39466231429741, 22.397586326112606, ...], y_list = [-13.127053979768426, -13.113947787969744, -13.100838387852809, -13.087725783591448, -13.0746099793574, -13.061490979320443, -13.048368787648261, -13.035243408506501, -13.022114846058741, -13.00898310446659, -12.995848187889619, -12.982710100485349, -12.969568846409208, -12.956424429814742, -12.943276854853337, -12.930126125674414, -12.916972246425342, -12.903815221251525, -12.890655054296275, -12.877491749700997, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[22.341097102765826, 22.344119371540085, 22.347136173841328, 22.35014751058032, 22.353153382668086, 22.356153791015892, 22.359148736535275, 22.36213822013803, 22.365122242736206, 22.368100805242097, 22.371073908568256, 22.374041553627507, 22.377003741332896, 22.379960472597748, 22.382911748335623, 22.385857569460338, 22.388797936885968, 22.391732851526804, 22.39466231429741, 22.397586326112606, ...], y_list=[-13.127053979768426, -13.113947787969744, -13.100838387852809, -13.087725783591448, -13.0746099793574, -13.061490979320443, -13.048368787648261, -13.035243408506501, -13.022114846058741, -13.00898310446659, -12.995848187889619, -12.982710100485349, -12.969568846409208, -12.956424429814742, -12.943276854853337, -12.930126125674414, -12.916972246425342, -12.903815221251525, -12.890655054296275, -12.877491749700997, ...])
    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([-13.28831183, -13.2825633 , -13.27680117,...-13.30547586, -13.29976812, -13.29404677]), y = array([-0.00407954, -0.02909827, -0.05411697, ..., 0.07097654, 0.04595791, 0.0209392 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-13.28831183, -13.2825633 , -13.27680117,...-13.30547586, -13.29976812, -13.29404677]), array([-0.00407954, -0.02909827, -0.05411697, ..., 0.07097654, 0.04595791, 0.0209392 ])], 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([-13.28831183, -13.2825633 , -13.27680117,...-13.30547586, -13.29976812, -13.29404677]), array([-0.00407954, -0.02909827, -0.05411697, ..., 0.07097654, 0.04595791, 0.0209392 ])], 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([[-1.32883118e+01, -1.32825633e+01, -1.327...09765374e-02, 4.59579105e-02, -4.07953963e-03]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 1.69113864e-04, 3.3824760... 9.99492779e-01, 9.99661832e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=10007, 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([[-1.32883118e+01, -1.32825633e+01, -1.327...09765374e-02, 4.59579105e-02, -4.07953963e-03]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 1.69113864e-04, 3.3824760... 9.99492779e-01, 9.99661832e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 10007, 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>