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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:35:09

Orbital Elements for STF248
WDS: STF248 WDS ID/Discoverer
P: 318.000 Orbital period (years)
a: 0.94 Semi-major axis (arcseconds)
i: 147.0 Inclination (degrees)
Ω: 158.0 Longitude of ascending node (degrees)
T: 1989.200 Epoch of periastron passage (year)
e: 0.802 Eccentricity
ω: 175.0 Longitude of periastron (degrees)
Start-Year: 1866.0 Year
End-Year: 2184.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF248
Position: 022103.67+424627.1 Epoch-2000 right ascension and declination
WDS-ID: 02211+4246 WDS designation
Discoverer Code: STF248 Discover designation and components
ADS number: 1786 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 10952 Hipparcos catalog number
V1: 9.55 Magnitude of the primary
V2: 9.83 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF248
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:35:09 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 = [-0.6703058928634915, -0.6737674627079809, -0.6771787553385943, -0.6805391936716837, -0.6838481892311434, -0.6871051417810945, -0.6903094389450165, -0.6934604558106723, -0.6965575545200888, -0.6996000838438606, -0.7025873787389764, -0.7055187598893239, -0.7083935332279885, -0.7112109894404143, -0.7139704034474036, -0.7166710338669328, -0.7193121224536382, -0.7218928935147938, -0.7244125533015217, -0.7268702893738831, ...], y_list = [-1.4909425599244366, -1.4855944087038122, -1.480135401927961, -1.4745652420208286, -1.4688836190361434, -1.463090210474424, -1.4571846810915732, -1.451166682698779, -1.4450358539534565, -1.4387918201409284, -1.4324341929465343, -1.425962570217841, -1.41937653571662, -1.4126756588602076, -1.405859494451894, -1.39892758239992, -1.3918794474246647, -1.3847145987535856, -1.3774325298034393, -1.3700327178492848, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.6703058928634915, -0.6737674627079809, -0.6771787553385943, -0.6805391936716837, -0.6838481892311434, -0.6871051417810945, -0.6903094389450165, -0.6934604558106723, -0.6965575545200888, -0.6996000838438606, -0.7025873787389764, -0.7055187598893239, -0.7083935332279885, -0.7112109894404143, -0.7139704034474036, -0.7166710338669328, -0.7193121224536382, -0.7218928935147938, -0.7244125533015217, -0.7268702893738831, ...], y_list=[-1.4909425599244366, -1.4855944087038122, -1.480135401927961, -1.4745652420208286, -1.4688836190361434, -1.463090210474424, -1.4571846810915732, -1.451166682698779, -1.4450358539534565, -1.4387918201409284, -1.4324341929465343, -1.425962570217841, -1.41937653571662, -1.4126756588602076, -1.405859494451894, -1.39892758239992, -1.3918794474246647, -1.3847145987535856, -1.3774325298034393, -1.3700327178492848, ...])
    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([-0.3742142 , -0.39558418, -0.41562093, -0...27212246, -0.30052841, -0.32686823, -0.35136516]), y = array([-0.02103159, -0.0455901 , -0.06999687, -0...07676659, 0.05268094, 0.0282262 , 0.00360749]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.3742142 , -0.39558418, -0.41562093, -0...27212246, -0.30052841, -0.32686823, -0.35136516]), array([-0.02103159, -0.0455901 , -0.06999687, -0...07676659, 0.05268094, 0.0282262 , 0.00360749])], 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([-0.3742142 , -0.39558418, -0.41562093, -0...27212246, -0.30052841, -0.32686823, -0.35136516]), array([-0.02103159, -0.0455901 , -0.06999687, -0...07676659, 0.05268094, 0.0282262 , 0.00360749])], 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([[-3.74214202e-01, -3.95584178e-01, -4.156...e-02, 2.82261966e-02, -2.10315940e-02]]), 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. , 0.00714987, 0.01408525, 0.020... 0.96892111, 0.97710063, 0.98499447, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=325, 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([[-3.74214202e-01, -3.95584178e-01, -4.156...e-02, 2.82261966e-02, -2.10315940e-02]]), 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. , 0.00714987, 0.01408525, 0.020... 0.96892111, 0.97710063, 0.98499447, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 325, 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>