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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:21:48

Orbital Elements for BU938
WDS: BU938 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.814 Semi-major axis (arcseconds)
i: 95.4 Inclination (degrees)
Ω: 121.4 Longitude of ascending node (degrees)
T: 2029.320 Epoch of periastron passage (year)
e: 0.489 Eccentricity
ω: 11.5 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU938
Position: 140619.02-263445.4 Epoch-2000 right ascension and declination
WDS-ID: 14063-2635 WDS designation
Discoverer Code: BU938 Discover designation and components
ADS number: 9106 Aitken Double Star catalog
HD number: 12033 HD catalog number
Hipparcos number: 68821 Hipparcos catalog number
V1: 8.14 Magnitude of the primary
V2: 8.23 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for BU938
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:21:48 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 = [1.0283253015506988, 1.0277811681449727, 1.0271878528642495, 1.0265453938275901, 1.0258538280449165, 1.0251131914227185, 1.024323518769751, 1.0234848438027289, 1.0225971991520209, 1.0216606163673487, 1.020675125923489, 1.0196407572259885, 1.0185575386168948, 1.0174254973805077, 1.0162446597491563, 1.0150150509090108, 1.0137366950059288, 1.0124096151513533, 1.0110338334282598, 1.0096093708971645, ...], y_list = [0.6038584112261731, 0.6028742057081709, 0.6018611511646996, 0.6008193017729193, 0.5997487110497427, 0.598649431860361, 0.597521516426761, 0.5963650163362403, 0.5951799825499234, 0.5939664654112842, 0.592724514654679, 0.5914541794138963, 0.5901555082307269, 0.5888285490635612, 0.5874733492960202, 0.5860899557456257, 0.5846784146725128, 0.5832387717881995, 0.5817710722644103, 0.580275360741968, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.0283253015506988, 1.0277811681449727, 1.0271878528642495, 1.0265453938275901, 1.0258538280449165, 1.0251131914227185, 1.024323518769751, 1.0234848438027289, 1.0225971991520209, 1.0216606163673487, 1.020675125923489, 1.0196407572259885, 1.0185575386168948, 1.0174254973805077, 1.0162446597491563, 1.0150150509090108, 1.0137366950059288, 1.0124096151513533, 1.0110338334282598, 1.0096093708971645, ...], y_list=[0.6038584112261731, 0.6028742057081709, 0.6018611511646996, 0.6008193017729193, 0.5997487110497427, 0.598649431860361, 0.597521516426761, 0.5963650163362403, 0.5951799825499234, 0.5939664654112842, 0.592724514654679, 0.5914541794138963, 0.5901555082307269, 0.5888285490635612, 0.5874733492960202, 0.5860899557456257, 0.5846784146725128, 0.5832387717881995, 0.5817710722644103, 0.580275360741968, ...])
    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([-0.10260736, -0.11303713, -0.12339848, -0...3, -0.07098733, -0.08157487, -0.09211735]), y = array([-0.00555434, -0.01277967, -0.01999725, -0... , 0.01612473, 0.00890195, 0.00167427]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.10260736, -0.11303713, -0.12339848, -0...3, -0.07098733, -0.08157487, -0.09211735]), array([-0.00555434, -0.01277967, -0.01999725, -0... , 0.01612473, 0.00890195, 0.00167427])], 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([-0.10260736, -0.11303713, -0.12339848, -0...3, -0.07098733, -0.08157487, -0.09211735]), array([-0.00555434, -0.01277967, -0.01999725, -0... , 0.01612473, 0.00890195, 0.00167427])], 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([[-0.10260736, -0.11303713, -0.12339848, .... 0.01612473, 0.00890195, -0.00555434]]), 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. , 0.00387049, 0.0077225 , 0.011...8706, 0.9883049 , 0.99221461, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=507, 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([[-0.10260736, -0.11303713, -0.12339848, .... 0.01612473, 0.00890195, -0.00555434]]), 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. , 0.00387049, 0.0077225 , 0.011...8706, 0.9883049 , 0.99221461, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 507, 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>