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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:02:31

Orbital Elements for HU1481
WDS: HU1481 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.456 Semi-major axis (arcseconds)
i: 62.1 Inclination (degrees)
Ω: 132.9 Longitude of ascending node (degrees)
T: 2038.150 Epoch of periastron passage (year)
e: 0.683 Eccentricity
ω: 141.3 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU1481
Position: 110928.65-560936.2 Epoch-2000 right ascension and declination
WDS-ID: 11095-5609 WDS designation
Discoverer Code: HU1481 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 97030 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.4 Magnitude of the primary
V2: 9.7 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 HU1481
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:02:31 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 = [-0.5830551145295407, -0.583822691514221, -0.584570831555711, -0.5852995251631834, -0.5860087621911501, -0.5866985318375311, -0.5873688226416622, -0.5880196224822266, -0.588650918575107, -0.5892626974711536, -0.5898549450538586, -0.5904276465369318, -0.5909807864617732, -0.591514348708414, -0.5920283164248878, -0.5925226721601267, -0.5929973977252158, -0.5934524742581658, -0.5938878822071061, -0.5943036013269243, ...], y_list = [-0.21988866668178284, -0.22170986634586776, -0.22352368474273854, -0.22533006737608322, -0.22712895957755286, -0.22892030649693823, -0.23070405309241368, -0.232480144120827, -0.23424852412803193, -0.23600913743924223, -0.23776192814941144, -0.23950684011360854, -0.24124381693739358, -0.24297280201188529, -0.2446937382805355, -0.2464065686765328, -0.24811123566593654, -0.24980768146141497, -0.2514958479676572, -0.2531756767714126, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.5830551145295407, -0.583822691514221, -0.584570831555711, -0.5852995251631834, -0.5860087621911501, -0.5866985318375311, -0.5873688226416622, -0.5880196224822266, -0.588650918575107, -0.5892626974711536, -0.5898549450538586, -0.5904276465369318, -0.5909807864617732, -0.591514348708414, -0.5920283164248878, -0.5925226721601267, -0.5929973977252158, -0.5934524742581658, -0.5938878822071061, -0.5943036013269243, ...], y_list=[-0.21988866668178284, -0.22170986634586776, -0.22352368474273854, -0.22533006737608322, -0.22712895957755286, -0.22892030649693823, -0.23070405309241368, -0.232480144120827, -0.23424852412803193, -0.23600913743924223, -0.23776192814941144, -0.23950684011360854, -0.24124381693739358, -0.24297280201188529, -0.2446937382805355, -0.2464065686765328, -0.24811123566593654, -0.24980768146141497, -0.2514958479676572, -0.2531756767714126, ...])
    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([-0.39553904, -0.39840481, -0.40124839, -0...2, -0.38680786, -0.38974063, -0.392651 ]), y = array([-0.00101168, -0.00327688, -0.00554189, -0...8, 0.00578374, 0.00351876, 0.00125357]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.39553904, -0.39840481, -0.40124839, -0...2, -0.38680786, -0.38974063, -0.392651 ]), array([-0.00101168, -0.00327688, -0.00554189, -0...8, 0.00578374, 0.00351876, 0.00125357])], 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([-0.39553904, -0.39840481, -0.40124839, -0...2, -0.38680786, -0.38974063, -0.392651 ]), array([-0.00101168, -0.00327688, -0.00554189, -0...8, 0.00578374, 0.00351876, 0.00125357])], 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([[-0.39553904, -0.39840481, -0.40124839, .... 0.00578374, 0.00351876, -0.00101168]]), 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. , 0.00189627, 0.00378345, 0.005...2381, 0.99425656, 0.99618016, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=507, 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([[-0.39553904, -0.39840481, -0.40124839, .... 0.00578374, 0.00351876, -0.00101168]]), 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. , 0.00189627, 0.00378345, 0.005...2381, 0.99425656, 0.99618016, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 507, 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>