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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:22:19

Orbital Elements for HU1012
WDS: HU1012 WDS ID/Discoverer
P: 580.000 Orbital period (years)
a: 1.17 Semi-major axis (arcseconds)
i: 108.3 Inclination (degrees)
Ω: 38.8 Longitude of ascending node (degrees)
T: 1875.000 Epoch of periastron passage (year)
e: 0.687 Eccentricity
ω: 121.1 Longitude of periastron (degrees)
Start-Year: 1735.0 Year
End-Year: 2315.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU1012
Position: 004303.47+765925.5 Epoch-2000 right ascension and declination
WDS-ID: 00431+7659 WDS designation
Discoverer Code: HU1012 Discover designation and components
ADS number: 584 Aitken Double Star catalog
HD number: 3871 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.83 Magnitude of the primary
V2: 9.71 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1995 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HU1012
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:22:19 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 = [-1.0470978081485196, -1.0442019481522349, -1.041255870419154, -1.03825917786231, -1.0352114666680419, -1.0321123261432732, -1.028961338558389, -1.0257580789855474, -1.0225021151322768, -1.019193007170197, -1.015830307558693, -1.0124135608633669, -1.0089423035690925, -1.005416063887479, -1.0018343615585483, -0.9981967076464295, -0.9945026043288543, -0.9907515446802324, -0.9869430124480933, -0.9830764818226428, ...], y_list = [0.8900580006960696, 0.8908277846289988, 0.8915547266156568, 0.8922383303780123, 0.8928780904771377, 0.8934734920729835, 0.8940240106762755, 0.8945291118922006, 0.8949882511555809, 0.8954008734571642, 0.8957664130606963, 0.8960842932103874, 0.8963539258283822, 0.8965747112018183, 0.8967460376590485, 0.8968672812345635, 0.8969378053221579, 0.8969569603158173, 0.8969240832378333, 0.896838497353575, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-1.0470978081485196, -1.0442019481522349, -1.041255870419154, -1.03825917786231, -1.0352114666680419, -1.0321123261432732, -1.028961338558389, -1.0257580789855474, -1.0225021151322768, -1.019193007170197, -1.015830307558693, -1.0124135608633669, -1.0089423035690925, -1.005416063887479, -1.0018343615585483, -0.9981967076464295, -0.9945026043288543, -0.9907515446802324, -0.9869430124480933, -0.9830764818226428, ...], y_list=[0.8900580006960696, 0.8908277846289988, 0.8915547266156568, 0.8922383303780123, 0.8928780904771377, 0.8934734920729835, 0.8940240106762755, 0.8945291118922006, 0.8949882511555809, 0.8954008734571642, 0.8957664130606963, 0.8960842932103874, 0.8963539258283822, 0.8965747112018183, 0.8967460376590485, 0.8968672812345635, 0.8969378053221579, 0.8969569603158173, 0.8969240832378333, 0.896838497353575, ...])
    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([-0.70208236, -0.6974239 , -0.69274286, -0...8, -0.7159221 , -0.71133148, -0.70671823]), y = array([-0.00204529, -0.006851 , -0.01165649, -0...7, 0.01237161, 0.00756617, 0.00276048]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.70208236, -0.6974239 , -0.69274286, -0...8, -0.7159221 , -0.71133148, -0.70671823]), array([-0.00204529, -0.006851 , -0.01165649, -0...7, 0.01237161, 0.00756617, 0.00276048])], 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([-0.70208236, -0.6974239 , -0.69274286, -0...8, -0.7159221 , -0.71133148, -0.70671823]), array([-0.00204529, -0.006851 , -0.01165649, -0...7, 0.01237161, 0.00756617, 0.00276048])], 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([[-0.70208236, -0.6974239 , -0.69274286, .... 0.01237161, 0.00756617, -0.00204529]]), 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. , 0.00157013, 0.00314392, 0.004...564 , 0.99531172, 0.99687077, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=587, 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([[-0.70208236, -0.6974239 , -0.69274286, .... 0.01237161, 0.00756617, -0.00204529]]), 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. , 0.00157013, 0.00314392, 0.004...564 , 0.99531172, 0.99687077, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 587, 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>