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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:03:42

Orbital Elements for B2468
WDS: B2468 WDS ID/Discoverer
P: 670.000 Orbital period (years)
a: 1.594 Semi-major axis (arcseconds)
i: 138.1 Inclination (degrees)
Ω: 186.3 Longitude of ascending node (degrees)
T: 2013.440 Epoch of periastron passage (year)
e: 0.955 Eccentricity
ω: 18.6 Longitude of periastron (degrees)
Start-Year: 1690.0 Year
End-Year: 2360.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B2468
Position: 191026.26-581326.8 Epoch-2000 right ascension and declination
WDS-ID: 19105-5813 WDS designation
Discoverer Code: B2468 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 178025 HD catalog number
Hipparcos number: 94181 Hipparcos catalog number
V1: 10.14 Magnitude of the primary
V2: 11.85 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for B2468
--> -->
 
 
ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:03:42 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 = [0.43022185531132207, 0.4318315999714346, 0.4334362484934462, 0.43503577968354273, 0.43663017221642264, 0.4382194046332881, 0.4398034553398391, 0.4413823026042363, 0.44295592455502786, 0.4445242991790799, 0.44608740431945665, 0.4476452176732956, 0.4491977167896531, 0.4507448790673079, 0.4522866819660942, 0.4538231022153386, 0.45535411691445715, 0.45687970284195467, 0.45839983661520767, 0.45991449468817885, ...], y_list = [3.0081957395379715, 3.0072243099988425, 3.0062173915685784, 3.0051749804781656, 3.0040970721783387, 3.0029836613388516, 3.0018347418476536, 3.0006503068099732, 2.9994303485473206, 2.9981748585963843, 2.9968838277078493, 2.995557245845124, 2.994195102182964, 2.9927973851060283, 2.9913640820060134, 2.989895180016807, 2.988390664990774, 2.986850522131241, 2.9852747358419602, 2.983663289724985, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.43022185531132207, 0.4318315999714346, 0.4334362484934462, 0.43503577968354273, 0.43663017221642264, 0.4382194046332881, 0.4398034553398391, 0.4413823026042363, 0.44295592455502786, 0.4445242991790799, 0.44608740431945665, 0.4476452176732956, 0.4491977167896531, 0.4507448790673079, 0.4522866819660942, 0.4538231022153386, 0.45535411691445715, 0.45687970284195467, 0.45839983661520767, 0.45991449468817885, ...], y_list=[3.0081957395379715, 3.0072243099988425, 3.0062173915685784, 3.0051749804781656, 3.0040970721783387, 3.0029836613388516, 3.0018347418476536, 3.0006503068099732, 2.9994303485473206, 2.9981748585963843, 2.9968838277078493, 2.995557245845124, 2.994195102182964, 2.9927973851060283, 2.9913640820060134, 2.989895180016807, 2.988390664990774, 2.986850522131241, 2.9852747358419602, 2.983663289724985, ...])
    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([-0.04697396, 0.0223708 , 0.08200579, 0... , -0.137941 , -0.11960071, -0.09239029]), y = array([-0.04717724, -0.07339899, -0.05031416, -0...8, 0.12667502, 0.07200874, 0.01247689]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.04697396, 0.0223708 , 0.08200579, 0... , -0.137941 , -0.11960071, -0.09239029]), array([-0.04717724, -0.07339899, -0.05031416, -0...8, 0.12667502, 0.07200874, 0.01247689])], 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([-0.04697396, 0.0223708 , 0.08200579, 0... , -0.137941 , -0.11960071, -0.09239029]), array([-0.04717724, -0.07339899, -0.05031416, -0...8, 0.12667502, 0.07200874, 0.01247689])], 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([[-0.04697396, 0.0223708 , 0.08200579, .... 0.12667502, 0.07200874, -0.04717724]]), 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. , 0.01118543, 0.02083349, 0.029...9086, 0.97024263, 0.97894223, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=677, 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([[-0.04697396, 0.0223708 , 0.08200579, .... 0.12667502, 0.07200874, -0.04717724]]), 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. , 0.01118543, 0.02083349, 0.029...9086, 0.97024263, 0.97894223, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 677, 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>