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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:33:45

Orbital Elements for A2230AB
WDS: A2230AB WDS ID/Discoverer
P: 900.000 Orbital period (years)
a: 7.2 Semi-major axis (arcseconds)
i: 138.1 Inclination (degrees)
Ω: 54.9 Longitude of ascending node (degrees)
T: 1936.100 Epoch of periastron passage (year)
e: 0.435 Eccentricity
ω: 330.9 Longitude of periastron (degrees)
Start-Year: 1575.0 Year
End-Year: 2475.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2230AB
Position: 154401.85+023055.9 Epoch-2000 right ascension and declination
WDS-ID: 15440+0231 WDS designation
Discoverer Code: A2230AB Discover designation and components
ADS number: 9763 Aitken Double Star catalog
HD number: 140538 HD catalog number
Hipparcos number: 77052 Hipparcos catalog number
V1: 5.95 Magnitude of the primary
V2: 12.0 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A2230AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:33:45 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 = [8.978670812204165, 8.96522003877967, 8.951607701828552, 8.937833720760395, 8.92389801436188, 8.909800500802755, 8.895541097641951, 8.881119721833866, 8.866536289734814, 8.85179071710964, 8.836882919138494, 8.821812810423792, 8.806580304997338, 8.791185316327647, 8.775627757327433, 8.759907540361315, 8.744024577253677, 8.727978779296766, 8.711770057258962, 8.695398321393274, ...], y_list = [-4.217439618555257, -4.238135866831938, -4.2587557388863235, -4.279298708074088, -4.29976424546781, -4.320151819827194, -4.340460897569099, -4.360690942737308, -4.380841416971999, -4.400911779479049, -4.420901486999043, -4.440809993776011, -4.460636751525929, -4.480381209404987, -4.500042813977497, -4.519621009183597, -4.539115236306693, -4.558524933940565, -4.577849537956199, -4.597088481468381, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[8.978670812204165, 8.96522003877967, 8.951607701828552, 8.937833720760395, 8.92389801436188, 8.909800500802755, 8.895541097641951, 8.881119721833866, 8.866536289734814, 8.85179071710964, 8.836882919138494, 8.821812810423792, 8.806580304997338, 8.791185316327647, 8.775627757327433, 8.759907540361315, 8.744024577253677, 8.727978779296766, 8.711770057258962, 8.695398321393274, ...], y_list=[-4.217439618555257, -4.238135866831938, -4.2587557388863235, -4.279298708074088, -4.29976424546781, -4.320151819827194, -4.340460897569099, -4.360690942737308, -4.380841416971999, -4.400911779479049, -4.420901486999043, -4.440809993776011, -4.460636751525929, -4.480381209404987, -4.500042813977497, -4.519621009183597, -4.539115236306693, -4.558524933940565, -4.577849537956199, -4.597088481468381, ...])
    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([-3.64362077, -3.62821063, -3.61185335, -3...4, -3.68408618, -3.67156623, -3.65807528]), y = array([-2.55257619e-02, -9.19842203e-02, -1.5841...51e-01, 1.07393717e-01, 4.09393693e-02]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-3.64362077, -3.62821063, -3.61185335, -3...4, -3.68408618, -3.67156623, -3.65807528]), array([-2.55257619e-02, -9.19842203e-02, -1.5841...51e-01, 1.07393717e-01, 4.09393693e-02])], 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([-3.64362077, -3.62821063, -3.61185335, -3...4, -3.68408618, -3.67156623, -3.65807528]), array([-2.55257619e-02, -9.19842203e-02, -1.5841...51e-01, 1.07393717e-01, 4.09393693e-02])], 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([[-3.64362077, -3.62821063, -3.61185335, .... 0.17381965, 0.10739372, -0.02552576]]), 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. , 0.00179787, 0.00360092, 0.005...6361, 0.99463919, 0.99642055, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=907, 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([[-3.64362077, -3.62821063, -3.61185335, .... 0.17381965, 0.10739372, -0.02552576]]), 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. , 0.00179787, 0.00360092, 0.005...6361, 0.99463919, 0.99642055, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 907, 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>