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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:30:15

Orbital Elements for HJ4757
WDS: HJ4757 WDS ID/Discoverer
P: 600.000 Orbital period (years)
a: 1.275 Semi-major axis (arcseconds)
i: 127.8 Inclination (degrees)
Ω: 123.9 Longitude of ascending node (degrees)
T: 2111.700 Epoch of periastron passage (year)
e: 0.404 Eccentricity
ω: 218.7 Longitude of periastron (degrees)
Start-Year: 1725.0 Year
End-Year: 2325.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HJ4757
Position: 152322.66-591914.5 Epoch-2000 right ascension and declination
WDS-ID: 15234-5919 WDS designation
Discoverer Code: HJ4757 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 136415 HD catalog number
Hipparcos number: 75323 Hipparcos catalog number
V1: 4.94 Magnitude of the primary
V2: 5.73 Magnitude of the secondary
Equinox: Equinox
Date: 2019 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HJ4757
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:30:15 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 = [-1.4917528729449243, -1.4952204774274445, -1.4986169630601316, -1.5019424801531989, -1.5051971782637932, -1.5083812061873476, -1.5114947119494988, -1.5145378427985527, -1.5175107451984757, -1.5204135648223962, -1.5232464465465945, -1.5260095344449665, -1.5287029717839429, -1.5313269010178485, -1.5338814637846865, -1.5363668009023288, -1.5387830523651076, -1.5411303573407804, -1.5434088541678697, -1.5456186803533527, ...], y_list = [-0.7118049803625341, -0.7070614986436229, -0.7022843859416267, -0.6974740156250093, -0.6926307580819558, -0.6877549807716868, -0.6828470482750822, -0.6779073223446473, -0.6729361619538101, -0.6679339233455786, -0.6629009600805605, -0.6578376230843654, -0.6527442606943916, -0.6476212187060176, -0.6424688404182122, -0.6372874666785515, -0.6320774359277019, -0.6268390842433144, -0.6215727453834103, -0.6162787508292109, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-1.4917528729449243, -1.4952204774274445, -1.4986169630601316, -1.5019424801531989, -1.5051971782637932, -1.5083812061873476, -1.5114947119494988, -1.5145378427985527, -1.5175107451984757, -1.5204135648223962, -1.5232464465465945, -1.5260095344449665, -1.5287029717839429, -1.5313269010178485, -1.5338814637846865, -1.5363668009023288, -1.5387830523651076, -1.5411303573407804, -1.5434088541678697, -1.5456186803533527, ...], y_list=[-0.7118049803625341, -0.7070614986436229, -0.7022843859416267, -0.6974740156250093, -0.6926307580819558, -0.6877549807716868, -0.6828470482750822, -0.6779073223446473, -0.6729361619538101, -0.6679339233455786, -0.6629009600805605, -0.6578376230843654, -0.6527442606943916, -0.6476212187060176, -0.6424688404182122, -0.6372874666785515, -0.6320774359277019, -0.6268390842433144, -0.6215727453834103, -0.6162787508292109, ...])
    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([-1.44400809e+00, -1.44804476e+00, -1.4520...85e+00, -1.43575905e+00, -1.43991282e+00]), y = array([-0.00400338, -0.01062421, -0.01724461, -0...7, 0.01585901, 0.0092385 , 0.00261762]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.44400809e+00, -1.44804476e+00, -1.4520...85e+00, -1.43575905e+00, -1.43991282e+00]), array([-0.00400338, -0.01062421, -0.01724461, -0...7, 0.01585901, 0.0092385 , 0.00261762])], 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([-1.44400809e+00, -1.44804476e+00, -1.4520...85e+00, -1.43575905e+00, -1.43991282e+00]), array([-0.00400338, -0.01062421, -0.01724461, -0...7, 0.01585901, 0.0092385 , 0.00261762])], 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([[-1.44400809, -1.44804476, -1.45202278, .... 0.01585901, 0.0092385 , -0.00400338]]), 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. , 0.00123097, 0.00245705, 0.003...2718, 0.99627775, 0.99752341, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=607, 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([[-1.44400809, -1.44804476, -1.45202278, .... 0.01585901, 0.0092385 , -0.00400338]]), 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. , 0.00123097, 0.00245705, 0.003...2718, 0.99627775, 0.99752341, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 607, 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>