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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:05:55

Orbital Elements for HDS2760
WDS: HDS2760 WDS ID/Discoverer
P: 80.000 Orbital period (years)
a: 0.274 Semi-major axis (arcseconds)
i: 118.8 Inclination (degrees)
Ω: 260.8 Longitude of ascending node (degrees)
T: 1971.614 Epoch of periastron passage (year)
e: 0.27 Eccentricity
ω: 121.0 Longitude of periastron (degrees)
Start-Year: 1985.0 Year
End-Year: 2065.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2760
Position: 192624.55-143304.3 Epoch-2000 right ascension and declination
WDS-ID: 19264-1433 WDS designation
Discoverer Code: HDS2760 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 182678 HD catalog number
Hipparcos number: 95574 Hipparcos catalog number
V1: 6.79 Magnitude of the primary
V2: 9.80 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 HDS2760
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:05:55 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 = [-0.20342824373474153, -0.19442933111777053, -0.18404387149696597, -0.1724318610420454, -0.15974330740558634, -0.14611797096486215, -0.13168550984708963, -0.11656588838260475, -0.10086994599772241, -0.0847000531388487, -0.06815080340078415, -0.05130970779499979, -0.034257869251602756, -0.017070624084593252, 0.0001818568407737822, 0.017434010410838665, 0.03462436750089318, 0.051695081881490794, 0.06859149948127052, 0.0852617651166523, ...], y_list = [0.09871445372594632, 0.10777638375503669, 0.11607087315850037, 0.12359291371223231, 0.13034438408510854, 0.13633250155327875, 0.1415685541765998, 0.14606687730810372, 0.14984403729958343, 0.15291818754831893, 0.1553085658798027, 0.15703510663136364, 0.15811814509997502, 0.158578195943884, 0.1584357905583715, 0.1577113613582758, 0.15642516332436657, 0.154597225161997, 0.15224732404113409, 0.1493949791980422, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.20342824373474153, -0.19442933111777053, -0.18404387149696597, -0.1724318610420454, -0.15974330740558634, -0.14611797096486215, -0.13168550984708963, -0.11656588838260475, -0.10086994599772241, -0.0847000531388487, -0.06815080340078415, -0.05130970779499979, -0.034257869251602756, -0.017070624084593252, 0.0001818568407737822, 0.017434010410838665, 0.03462436750089318, 0.051695081881490794, 0.06859149948127052, 0.0852617651166523, ...], y_list=[0.09871445372594632, 0.10777638375503669, 0.11607087315850037, 0.12359291371223231, 0.13034438408510854, 0.13633250155327875, 0.1415685541765998, 0.14606687730810372, 0.14984403729958343, 0.15291818754831893, 0.1553085658798027, 0.15703510663136364, 0.15811814509997502, 0.158578195943884, 0.1584357905583715, 0.1577113613582758, 0.15642516332436657, 0.154597225161997, 0.15224732404113409, 0.1493949791980422, ...])
    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([-1.93682262e-01, -1.79962551e-01, -1.6359...27e-01, -2.12929526e-01, -2.04672981e-01]), y = array([-0.01031671, -0.02367369, -0.03668033, -0...4, 0.02990578, 0.01665039, 0.00318728]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.93682262e-01, -1.79962551e-01, -1.6359...27e-01, -2.12929526e-01, -2.04672981e-01]), array([-0.01031671, -0.02367369, -0.03668033, -0...4, 0.02990578, 0.01665039, 0.00318728])], 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([-1.93682262e-01, -1.79962551e-01, -1.6359...27e-01, -2.12929526e-01, -2.04672981e-01]), array([-0.01031671, -0.02367369, -0.03668033, -0...4, 0.02990578, 0.01665039, 0.00318728])], 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([[-1.93682262e-01, -1.79962551e-01, -1.635...99057764e-02, 1.66503886e-02, -1.03167089e-02]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.01490871, 0.03118893, 0.048...8971, 0.96300618, 0.97420364, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=87, 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([[-1.93682262e-01, -1.79962551e-01, -1.635...99057764e-02, 1.66503886e-02, -1.03167089e-02]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.01490871, 0.03118893, 0.048...8971, 0.96300618, 0.97420364, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 87, 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>