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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:05:16

Orbital Elements for B433AB
WDS: B433AB WDS ID/Discoverer
P: 250.000 Orbital period (years)
a: 0.441 Semi-major axis (arcseconds)
i: 57.2 Inclination (degrees)
Ω: 219.7 Longitude of ascending node (degrees)
T: 2027.510 Epoch of periastron passage (year)
e: 0.458 Eccentricity
ω: 97.7 Longitude of periastron (degrees)
Start-Year: 1900.0 Year
End-Year: 2150.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B433AB
Position: 191939.44-283618.8 Epoch-2000 right ascension and declination
WDS-ID: 19197-2836 WDS designation
Discoverer Code: B433AB Discover designation and components
ADS number: 12299 Aitken Double Star catalog
HD number: 180957 HD catalog number
Hipparcos number: 94985 Hipparcos catalog number
V1: 9.89 Magnitude of the primary
V2: 10.08 Magnitude of the secondary
Equinox: Equinox
Date: 2019 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for B433AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:05:16 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 = [-0.22208703168655028, -0.21752017717489608, -0.21290897724428873, -0.20825438428919874, -0.20355734712586268, -0.19881881159613682, -0.1940397211728832, -0.18922101756801632, -0.18436364134435984, -0.17946853253247738, -0.17453663125367835, -0.16956887835039575, -0.16456621576341574, -0.15952958795974545, -0.15445994161854357, -0.14935822684201677, -0.14422539771028164, -0.13906241296875738, -0.1338702367297931, -0.12864983918982115, ...], y_list = [-0.2744368685561589, -0.2793915010328413, -0.28428917465865994, -0.2891289073002304, -0.2939097126900904, -0.2986305997989376, -0.3032905722086597, -0.3078886274850415, -0.3124237565490645, -0.3168949430457559, -0.321301162709563, -0.32564138272528254, -0.3299145613046494, -0.3341196463674919, -0.33825557571877257, -0.3423212759149934, -0.34631566169812994, -0.35023763531691676, -0.3540860858378073, -0.3578598884446492, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.22208703168655028, -0.21752017717489608, -0.21290897724428873, -0.20825438428919874, -0.20355734712586268, -0.19881881159613682, -0.1940397211728832, -0.18922101756801632, -0.18436364134435984, -0.17946853253247738, -0.17453663125367835, -0.16956887835039575, -0.16456621576341574, -0.15952958795974545, -0.15445994161854357, -0.14935822684201677, -0.14422539771028164, -0.13906241296875738, -0.1338702367297931, -0.12864983918982115, ...], y_list=[-0.2744368685561589, -0.2793915010328413, -0.28428917465865994, -0.2891289073002304, -0.2939097126900904, -0.2986305997989376, -0.3032905722086597, -0.3078886274850415, -0.3124237565490645, -0.3168949430457559, -0.321301162709563, -0.32564138272528254, -0.3299145613046494, -0.3341196463674919, -0.33825557571877257, -0.3423212759149934, -0.34631566169812994, -0.35023763531691676, -0.3540860858378073, -0.3578598884446492, ...])
    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([-0.36561562, -0.36432199, -0.36292417, -0...4, -0.36885099, -0.3678822 , -0.36680304]), y = array([-0.00256057, -0.00898898, -0.01541482, -0...9, 0.01672149, 0.01029658, 0.00386858]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.36561562, -0.36432199, -0.36292417, -0...4, -0.36885099, -0.3678822 , -0.36680304]), array([-0.00256057, -0.00898898, -0.01541482, -0...9, 0.01672149, 0.01029658, 0.00386858])], 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([-0.36561562, -0.36432199, -0.36292417, -0...4, -0.36885099, -0.3678822 , -0.36680304]), array([-0.00256057, -0.00898898, -0.01541482, -0...9, 0.01672149, 0.01029658, 0.00386858])], 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([[-0.36561562, -0.36432199, -0.36292417, -... 0.01672149, 0.01029658, -0.00256057]]), 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. , 0.00325707, 0.00652349, 0.009...7084, 0.99028786, 0.99351525, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=257, 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([[-0.36561562, -0.36432199, -0.36292417, -... 0.01672149, 0.01029658, -0.00256057]]), 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. , 0.00325707, 0.00652349, 0.009...7084, 0.99028786, 0.99351525, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 257, 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>