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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:58:32

Orbital Elements for BU1333BC
WDS: BU1333BC WDS ID/Discoverer
P: 180.000 Orbital period (years)
a: 0.238 Semi-major axis (arcseconds)
i: 126.9 Inclination (degrees)
Ω: 49.3 Longitude of ascending node (degrees)
T: 2043.600 Epoch of periastron passage (year)
e: 0.67 Eccentricity
ω: 150.0 Longitude of periastron (degrees)
Start-Year: 1935.0 Year
End-Year: 2115.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1333BC
Position: 041913.77+613502.4 Epoch-2000 right ascension and declination
WDS-ID: 04192+6135 WDS designation
Discoverer Code: BU1333BC Discover designation and components
ADS number: 3109 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.49 Magnitude of the primary
V2: 9.82 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU1333BC
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:58:32 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 = [-0.3206133190925099, -0.3223822623778061, -0.3240595502230875, -0.32564556337178363, -0.3271406555715995, -0.32854515406047946, -0.329859360013823, -0.33108354895408293, -0.3322179711237925, -0.3332628518229685, -0.33421839171175566, -0.3350847670790804, -0.33586213007799964, -0.33655060892834043, -0.3371503080940013, -0.33766130838835157, -0.33808366714497345, -0.3384174182350528, -0.33866257213721107, -0.3388191159491255, ...], y_list = [0.07917510649832894, 0.08236065910699598, 0.08552279727768378, 0.08866084823168284, 0.09177414595158818, 0.09486203001846007, 0.0979238444958607, 0.10095893685536785, 0.10396665693856245, 0.1069463559508106, 0.10989738548246339, 0.11281909655333854, 0.11571083867658581, 0.11857195893820896, 0.12140180112345238, 0.12419970464945325, 0.1269650039882625, 0.12969702748567735, 0.13239509658612023, 0.13505852492526502, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.3206133190925099, -0.3223822623778061, -0.3240595502230875, -0.32564556337178363, -0.3271406555715995, -0.32854515406047946, -0.329859360013823, -0.33108354895408293, -0.3322179711237925, -0.3332628518229685, -0.33421839171175566, -0.3350847670790804, -0.33586213007799964, -0.33655060892834043, -0.3371503080940013, -0.33766130838835157, -0.33808366714497345, -0.3384174182350528, -0.33866257213721107, -0.3388191159491255, ...], y_list=[0.07917510649832894, 0.08236065910699598, 0.08552279727768378, 0.08866084823168284, 0.09177414595158818, 0.09486203001846007, 0.0979238444958607, 0.10095893685536785, 0.10396665693856245, 0.1069463559508106, 0.10989738548246339, 0.11281909655333854, 0.11571083867658581, 0.11857195893820896, 0.12140180112345238, 0.12419970464945325, 0.1269650039882625, 0.12969702748567735, 0.13239509658612023, 0.13505852492526502, ...])
    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([-0.24912917, -0.24485069, -0.24045845, -0...5, -0.26129592, -0.25735046, -0.25329531]), y = array([-0.00228212, -0.00578025, -0.00927568, -0...4, 0.00821231, 0.00471567, 0.00121704]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.24912917, -0.24485069, -0.24045845, -0...5, -0.26129592, -0.25735046, -0.25329531]), array([-0.00228212, -0.00578025, -0.00927568, -0...4, 0.00821231, 0.00471567, 0.00121704])], 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([-0.24912917, -0.24485069, -0.24045845, -0...5, -0.26129592, -0.25735046, -0.25329531]), array([-0.00228212, -0.00578025, -0.00927568, -0...4, 0.00821231, 0.00471567, 0.00121704])], 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([[-0.24912917, -0.24485069, -0.24045845, -... 0.00821231, 0.00471567, -0.00228212]]), w=array([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. , 0.00505496, 0.01018936, 0.015...5664, 0.98530286, 0.99012496, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=187, 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([[-0.24912917, -0.24485069, -0.24045845, -... 0.00821231, 0.00471567, -0.00228212]]), w = array([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. , 0.00505496, 0.01018936, 0.015...5664, 0.98530286, 0.99012496, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 187, 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>