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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:29:28

Orbital Elements for HEI598
WDS: HEI598 WDS ID/Discoverer
P: 120.000 Orbital period (years)
a: 1.565 Semi-major axis (arcseconds)
i: 51.8 Inclination (degrees)
Ω: 42.8 Longitude of ascending node (degrees)
T: 2016.440 Epoch of periastron passage (year)
e: 0.349 Eccentricity
ω: 67.8 Longitude of periastron (degrees)
Start-Year: 1965.0 Year
End-Year: 2085.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HEI598
Position: 214905.88-720608.8 Epoch-2000 right ascension and declination
WDS-ID: 21491-7206 WDS designation
Discoverer Code: HEI598 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 107705 Hipparcos catalog number
V1: 10.11 Magnitude of the primary
V2: 11.17 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 HEI598
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:29:28 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 = [1.1505094113689573, 1.1112082207145464, 1.0705973777868742, 1.028709515996, 0.9855782367882728, 0.9412382594948934, 0.895725584659047, 0.8490776724914938, 0.8013336383104604, 0.7525344670531884, 0.7027232492067248, 0.6519454407972483, 0.6002491504036999, 0.5476854565252623, 0.4943087590358631, 0.44017716890369585, 0.3853529408398878, 0.3299029540654854, 0.27389924694437584, 0.2174196118104451, ...], y_list = [0.6291167128004771, 0.6722100805486712, 0.7145110425744631, 0.755959554586899, 0.7964941241593321, 0.8360516517029978, 0.8745672647248068, 0.9119741447193324, 0.9482033460588044, 0.9831836062713605, 1.016841147141369, 1.0490994661327584, 1.0798791177345957, 1.1090974844681176, 1.1366685374888443, 1.1625025869832069, 1.186506022917626, 1.2085810471766507, 1.228625398760375, 1.24653207454444, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.1505094113689573, 1.1112082207145464, 1.0705973777868742, 1.028709515996, 0.9855782367882728, 0.9412382594948934, 0.895725584659047, 0.8490776724914938, 0.8013336383104604, 0.7525344670531884, 0.7027232492067248, 0.6519454407972483, 0.6002491504036999, 0.5476854565252623, 0.4943087590358631, 0.44017716890369585, 0.3853529408398878, 0.3299029540654854, 0.27389924694437584, 0.2174196118104451, ...], y_list=[0.6291167128004771, 0.6722100805486712, 0.7145110425744631, 0.755959554586899, 0.7964941241593321, 0.8360516517029978, 0.8745672647248068, 0.9119741447193324, 0.9482033460588044, 0.9831836062713605, 1.016841147141369, 1.0490994661327584, 1.0798791177345957, 1.1090974844681176, 1.1366685374888443, 1.1625025869832069, 1.186506022917626, 1.2085810471766507, 1.228625398760375, 1.24653207454444, ...])
    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([-0.7126452 , -0.65827631, -0.59738722, -0...9, -0.83195458, -0.79980104, -0.75995199]), y = array([-0.07030119, -0.16905116, -0.26612777, -0...9, 0.22624284, 0.12830999, 0.02914623]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.7126452 , -0.65827631, -0.59738722, -0...9, -0.83195458, -0.79980104, -0.75995199]), array([-0.07030119, -0.16905116, -0.26612777, -0...9, 0.22624284, 0.12830999, 0.02914623])], 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([-0.7126452 , -0.65827631, -0.59738722, -0...9, -0.83195458, -0.79980104, -0.75995199]), array([-0.07030119, -0.16905116, -0.26612777, -0...9, 0.22624284, 0.12830999, 0.02914623])], 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([[-0.7126452 , -0.65827631, -0.59738722, -... 0.22624284, 0.12830999, -0.07030119]]), 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. , 0.01454075, 0.02932198, 0.044...7323, 0.95872719, 0.97202298, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=127, 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([[-0.7126452 , -0.65827631, -0.59738722, -... 0.22624284, 0.12830999, -0.07030119]]), 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. , 0.01454075, 0.02932198, 0.044...7323, 0.95872719, 0.97202298, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 127, 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>