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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:00:05

Orbital Elements for I502AB
WDS: I502AB WDS ID/Discoverer
P: 256.000 Orbital period (years)
a: 0.307 Semi-major axis (arcseconds)
i: 180.0 Inclination (degrees)
Ω: 225.2 Longitude of ascending node (degrees)
T: 2016.580 Epoch of periastron passage (year)
e: 0.728 Eccentricity
ω: 0.0 Longitude of periastron (degrees)
Start-Year: 1897.0 Year
End-Year: 2153.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I502AB
Position: 104532.90-250134.0 Epoch-2000 right ascension and declination
WDS-ID: 10455-2502 WDS designation
Discoverer Code: I502AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 93227 HD catalog number
Hipparcos number: 52615 Hipparcos catalog number
V1: 7.78 Magnitude of the primary
V2: 8.86 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for I502AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:00:05 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 = [-0.35715340583210914, -0.35466404801805756, -0.3521328111071432, -0.3495598880083487, -0.3469454670251399, -0.34428973198174884, -0.3415928623478667, -0.33885503336199074, -0.33607641615367556, -0.3332571778649354, -0.33039748177106215, -0.32749748740111523, -0.32455735065836416, -0.32157722394095406, -0.3185572562630982, -0.3154975933770893, -0.312398377896453, -0.30925974942057366, -0.3060818446611422, -0.3028647975707924, ...], y_list = [0.3900933818690518, 0.39181470524323403, 0.39348976251998813, 0.3951182374522799, 0.3966998057923943, 0.39823413506497285, 0.3997208843318215, 0.40115970394805417, 0.40255023530911666, 0.4038921105882139, 0.4051849524636354, 0.406428373835453, 0.40762197753102763, 0.4087653559987418, 0.4098580909893292, 0.4108997532241504, 0.4118899020497142, 0.4128280850777109, 0.4137138378097764, 0.4145466832461598, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.35715340583210914, -0.35466404801805756, -0.3521328111071432, -0.3495598880083487, -0.3469454670251399, -0.34428973198174884, -0.3415928623478667, -0.33885503336199074, -0.33607641615367556, -0.3332571778649354, -0.33039748177106215, -0.32749748740111523, -0.32455735065836416, -0.32157722394095406, -0.3185572562630982, -0.3154975933770893, -0.312398377896453, -0.30925974942057366, -0.3060818446611422, -0.3028647975707924, ...], y_list=[0.3900933818690518, 0.39181470524323403, 0.39348976251998813, 0.3951182374522799, 0.3966998057923943, 0.39823413506497285, 0.3997208843318215, 0.40115970394805417, 0.40255023530911666, 0.4038921105882139, 0.4051849524636354, 0.406428373835453, 0.40762197753102763, 0.4087653559987418, 0.4098580909893292, 0.4108997532241504, 0.4118899020497142, 0.4128280850777109, 0.4137138378097764, 0.4145466832461598, ...])
    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([-0.29628578, -0.29047114, -0.28445007, -0...6, -0.31256711, -0.30732665, -0.30190183]), y = array([-0.00205394, -0.00736559, -0.01267196, -0...7, 0.01387604, 0.00857013, 0.00325911]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.29628578, -0.29047114, -0.28445007, -0...6, -0.31256711, -0.30732665, -0.30190183]), array([-0.00205394, -0.00736559, -0.01267196, -0...7, 0.01387604, 0.00857013, 0.00325911])], 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([-0.29628578, -0.29047114, -0.28445007, -0...6, -0.31256711, -0.30732665, -0.30190183]), array([-0.00205394, -0.00736559, -0.01267196, -0...7, 0.01387604, 0.00857013, 0.00325911])], 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([[-0.29628578, -0.29047114, -0.28445007, -... 0.01387604, 0.00857013, -0.00205394]]), 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. , 0.00480302, 0.0096976 , 0.014...3824, 0.98610731, 0.99065543, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=263, 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([[-0.29628578, -0.29047114, -0.28445007, -... 0.01387604, 0.00857013, -0.00205394]]), 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. , 0.00480302, 0.0096976 , 0.014...3824, 0.98610731, 0.99065543, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 263, 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>