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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:34:13

Orbital Elements for MCA6
WDS: MCA6 WDS ID/Discoverer
P: 40.000 Orbital period (years)
a: 0.0823 Semi-major axis (arcseconds)
i: 24.0 Inclination (degrees)
Ω: 83.1 Longitude of ascending node (degrees)
T: 2029.400 Epoch of periastron passage (year)
e: 0.362 Eccentricity
ω: 223.3 Longitude of periastron (degrees)
Start-Year: 2005.0 Year
End-Year: 2045.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA6
Position: 021429.10+663128.0 Epoch-2000 right ascension and declination
WDS-ID: 02145+6631 WDS designation
Discoverer Code: MCA6 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 13475 HD catalog number
Hipparcos number: 10438 Hipparcos catalog number
V1: 6.4 Magnitude of the primary
V2: 7.6 Magnitude of the secondary
Equinox: Equinox
Date: 2020 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for MCA6
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:34:13 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 = [-0.10360403161697003, -0.10210738159797463, -0.09954947566274693, -0.09598880452105191, -0.09148072834018019, -0.08607841199678462, -0.07983386215650175, -0.07279909925504524, -0.06502752268216999, -0.05657555379816578, -0.047504679851820455, -0.03788407157205134, -0.027794021264651185, -0.017330553730555406, -0.0066117126250754615, 0.004213769866469106, 0.014954457246688252, 0.025359649857336915, 0.035097124529802536, 0.043725100605453544, ...], y_list = [-0.026275972236815787, -0.03462619243270686, -0.04261709198476952, -0.05017910206526061, -0.05724607852647116, -0.0637535331427554, -0.06963708229952394, -0.07483102851323888, -0.07926700764637565, -0.08287265115204231, -0.08557022585774172, -0.08727523438805518, -0.08789499072868083, -0.08732724464003243, -0.08545904184078576, -0.0821662261361714, -0.07731441375610472, -0.07076308083406867, -0.062375917815594616, -0.052043261518594515, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.10360403161697003, -0.10210738159797463, -0.09954947566274693, -0.09598880452105191, -0.09148072834018019, -0.08607841199678462, -0.07983386215650175, -0.07279909925504524, -0.06502752268216999, -0.05657555379816578, -0.047504679851820455, -0.03788407157205134, -0.027794021264651185, -0.017330553730555406, -0.0066117126250754615, 0.004213769866469106, 0.014954457246688252, 0.025359649857336915, 0.035097124529802536, 0.043725100605453544, ...], y_list=[-0.026275972236815787, -0.03462619243270686, -0.04261709198476952, -0.05017910206526061, -0.05724607852647116, -0.0637535331427554, -0.06963708229952394, -0.07483102851323888, -0.07926700764637565, -0.08287265115204231, -0.08557022585774172, -0.08727523438805518, -0.08789499072868083, -0.08732724464003243, -0.08545904184078576, -0.0821662261361714, -0.07731441375610472, -0.07076308083406867, -0.062375917815594616, -0.052043261518594515, ...])
    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([-0.10315902, -0.10397696, -0.10360403, -0...8, -0.09280956, -0.09765556, -0.10107781]), y = array([-0.00880603, -0.01764152, -0.02627597, -0...7, 0.01787833, 0.00907446, 0.00013598]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.10315902, -0.10397696, -0.10360403, -0...8, -0.09280956, -0.09765556, -0.10107781]), array([-0.00880603, -0.01764152, -0.02627597, -0...7, 0.01787833, 0.00907446, 0.00013598])], 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([-0.10315902, -0.10397696, -0.10360403, -0...8, -0.09280956, -0.09765556, -0.10107781]), array([-0.00880603, -0.01764152, -0.02627597, -0...7, 0.01787833, 0.00907446, 0.00013598])], 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([[-0.10315902, -0.10397696, -0.10360403, -... 0.01787833, 0.00907446, -0.00880603]]), 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. , 0.01857198, 0.03666095, 0.036...7849, 0.93980929, 0.96084309, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=47, 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([[-0.10315902, -0.10397696, -0.10360403, -... 0.01787833, 0.00907446, -0.00880603]]), 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. , 0.01857198, 0.03666095, 0.036...7849, 0.93980929, 0.96084309, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 47, 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>