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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:14:04

Orbital Elements for CHR185
WDS: CHR185 WDS ID/Discoverer
P: 100.000 Orbital period (years)
a: 0.16 Semi-major axis (arcseconds)
i: 119.2 Inclination (degrees)
Ω: 114.1 Longitude of ascending node (degrees)
T: 2022.610 Epoch of periastron passage (year)
e: 0.9 Eccentricity
ω: 348.2 Longitude of periastron (degrees)
Start-Year: 1975.0 Year
End-Year: 2075.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR185
Position: 203056.79-290645.5 Epoch-2000 right ascension and declination
WDS-ID: 20310-2907 WDS designation
Discoverer Code: CHR185 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 195206 HD catalog number
Hipparcos number: 101211 Hipparcos catalog number
V1: 9.20 Magnitude of the primary
V2: 6.50 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for CHR185
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:14:04 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 = [0.2609294240308889, 0.2613756908475034, 0.2616701515602559, 0.26181170722395175, 0.2617990956117841, 0.2616308847944343, 0.26130546566114243, 0.2608210432581881, 0.2601756268277913, 0.2593670184040971, 0.2583927997960531, 0.25725031775525364, 0.25593666708901985, 0.25444867143365757, 0.2527828613481191, 0.25093544932180883, 0.24890230120896525, 0.24667890350195765, 0.24426032567494307, 0.24164117701251756, ...], y_list = [0.1470073616866805, 0.1459480177752085, 0.14480390840356105, 0.14357518480983808, 0.14226191835673743, 0.1408641004315058, 0.13938164186761184, 0.13781437194922352, 0.13616203697253218, 0.13442429834231376, 0.13260073017564097, 0.1306908163774608, 0.12869394714465943, 0.1266094148459965, 0.12443640921464891, 0.12217401177771363, 0.1198211894324784, 0.11737678706206417, 0.11483951900424562, 0.11220795951452128, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.2609294240308889, 0.2613756908475034, 0.2616701515602559, 0.26181170722395175, 0.2617990956117841, 0.2616308847944343, 0.26130546566114243, 0.2608210432581881, 0.2601756268277913, 0.2593670184040971, 0.2583927997960531, 0.25725031775525364, 0.25593666708901985, 0.25444867143365757, 0.2527828613481191, 0.25093544932180883, 0.24890230120896525, 0.24667890350195765, 0.24426032567494307, 0.24164117701251756, ...], y_list=[0.1470073616866805, 0.1459480177752085, 0.14480390840356105, 0.14357518480983808, 0.14226191835673743, 0.1408641004315058, 0.13938164186761184, 0.13781437194922352, 0.13616203697253218, 0.13442429834231376, 0.13260073017564097, 0.1306908163774608, 0.12869394714465943, 0.1266094148459965, 0.12443640921464891, 0.12217401177771363, 0.1198211894324784, 0.11737678706206417, 0.11483951900424562, 0.11220795951452128, ...])
    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([-0.01613295, 0.0023273 , 0.02874946, 0...9, 0.0207923 , 0.00774691, -0.00579941]), y = array([-0.00028792, -0.01158046, -0.00712362, -0...2, 0.04417479, 0.03275975, 0.01860222]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.01613295, 0.0023273 , 0.02874946, 0...9, 0.0207923 , 0.00774691, -0.00579941]), array([-0.00028792, -0.01158046, -0.00712362, -0...2, 0.04417479, 0.03275975, 0.01860222])], 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([-0.01613295, 0.0023273 , 0.02874946, 0...9, 0.0207923 , 0.00774691, -0.00579941]), array([-0.00028792, -0.01158046, -0.00712362, -0...2, 0.04417479, 0.03275975, 0.01860222])], 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([[-0.01613295, 0.0023273 , 0.02874946, ... 0.04417479, 0.03275975, -0.00028792]]), 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. , 0.03259357, 0.07295151, 0.106...4282, 0.91248205, 0.93859045, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=107, 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([[-0.01613295, 0.0023273 , 0.02874946, ... 0.04417479, 0.03275975, -0.00028792]]), 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. , 0.03259357, 0.07295151, 0.106...4282, 0.91248205, 0.93859045, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 107, 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>