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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:37:02

Orbital Elements for RST1883
WDS: RST1883 WDS ID/Discoverer
P: 104.000 Orbital period (years)
a: 0.219 Semi-major axis (arcseconds)
i: 118.1 Inclination (degrees)
Ω: 288.5 Longitude of ascending node (degrees)
T: 2006.800 Epoch of periastron passage (year)
e: 0.779 Eccentricity
ω: 166.0 Longitude of periastron (degrees)
Start-Year: 1973.0 Year
End-Year: 2077.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST1883
Position: 161358.13-281509.4 Epoch-2000 right ascension and declination
WDS-ID: 16140-2815 WDS designation
Discoverer Code: RST1883 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 145793 HD catalog number
Hipparcos number: 79552 Hipparcos catalog number
V1: 8.15 Magnitude of the primary
V2: 10.22 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2019 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for RST1883
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:37:02 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 = [0.3370567450365663, 0.33417405620778623, 0.33099834774572356, 0.32752198736927396, 0.3237366849051262, 0.319633424371576, 0.3152023859401053, 0.310432855919486, 0.30531312248965103, 0.2998303543842068, 0.2939704590471723, 0.28771791592546114, 0.2810555794415528, 0.2739644445826403, 0.2664233669394883, 0.2584087244691688, 0.24989400776012055, 0.2408493184789597, 0.23124075086918403, 0.22102962236798587, ...], y_list = [0.11510219159955895, 0.11157922882417408, 0.10795844084559032, 0.10423960650512118, 0.10042246198085547, 0.09650670558106923, 0.09249200384240085, 0.08837799935451109, 0.08416432086785634, 0.07985059642521088, 0.0754364705107752, 0.0709216265626097, 0.06630581668852417, 0.061588901028447295, 0.05677090075469255, 0.05185206882175467, 0.04683298670039736, 0.04171469689963911, 0.03649888703540367, 0.031188148806213, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.3370567450365663, 0.33417405620778623, 0.33099834774572356, 0.32752198736927396, 0.3237366849051262, 0.319633424371576, 0.3152023859401053, 0.310432855919486, 0.30531312248965103, 0.2998303543842068, 0.2939704590471723, 0.28771791592546114, 0.2810555794415528, 0.2739644445826403, 0.2664233669394883, 0.2584087244691688, 0.24989400776012055, 0.2408493184789597, 0.23124075086918403, 0.22102962236798587, ...], y_list=[0.11510219159955895, 0.11157922882417408, 0.10795844084559032, 0.10423960650512118, 0.10042246198085547, 0.09650670558106923, 0.09249200384240085, 0.08837799935451109, 0.08416432086785634, 0.07985059642521088, 0.0754364705107752, 0.0709216265626097, 0.06630581668852417, 0.061588901028447295, 0.05677090075469255, 0.05185206882175467, 0.04683298670039736, 0.04171469689963911, 0.03649888703540367, 0.031188148806213, ...])
    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([-0.04923628, -0.04530123, -0.02753762, -0...00413432, -0.01810486, -0.03139671, -0.04274565]), y = array([-0.00080928, -0.01732381, -0.02842598, -0...05739769, 0.04532568, 0.03168547, 0.01623869]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.04923628, -0.04530123, -0.02753762, -0...00413432, -0.01810486, -0.03139671, -0.04274565]), array([-0.00080928, -0.01732381, -0.02842598, -0...05739769, 0.04532568, 0.03168547, 0.01623869])], 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([-0.04923628, -0.04530123, -0.02753762, -0...00413432, -0.01810486, -0.03139671, -0.04274565]), array([-0.00080928, -0.01732381, -0.02842598, -0...05739769, 0.04532568, 0.03168547, 0.01623869])], 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([[-0.04923628, -0.04530123, -0.02753762, -...5739769, 0.04532568, 0.03168547, -0.00080928]]), 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. , 0.01793855, 0.0400728 , 0.067... 0.9211966 , 0.94070623, 0.9608305 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=111, 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([[-0.04923628, -0.04530123, -0.02753762, -...5739769, 0.04532568, 0.03168547, -0.00080928]]), 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. , 0.01793855, 0.0400728 , 0.067... 0.9211966 , 0.94070623, 0.9608305 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 111, 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>