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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:29:46

Orbital Elements for HJ4753AB
WDS: HJ4753AB WDS ID/Discoverer
P: 772.000 Orbital period (years)
a: 1.657 Semi-major axis (arcseconds)
i: 114.6 Inclination (degrees)
Ω: 137.4 Longitude of ascending node (degrees)
T: 2048.000 Epoch of periastron passage (year)
e: 0.43 Eccentricity
ω: 80.9 Longitude of periastron (degrees)
Start-Year: 1639.0 Year
End-Year: 2411.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HJ4753AB
Position: 151832.02-475231.0 Epoch-2000 right ascension and declination
WDS-ID: 15185-4753 WDS designation
Discoverer Code: HJ4753AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 135734 HD catalog number
Hipparcos number: 74911 Hipparcos catalog number
V1: 4.93 Magnitude of the primary
V2: 4.99 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HJ4753AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:29:46 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 = [1.0859327562986552, 1.0811800532568752, 1.0764026846396844, 1.0716007749035914, 1.066774448197927, 1.0619238283726538, 1.0570490389861613, 1.052150203313053, 1.0472274443519167, 1.0422808848330873, 1.0373106472263935, 1.0323168537489151, 1.0272996263727205, 1.0222590868325898, 1.0171953566337617, 1.0121085570596473, 1.0069988091795603, 1.0018662338564488, 0.9967109517546078, 0.9915330833474224, ...], y_list = [-0.2303377425333551, -0.23706347776746167, -0.24378380476755276, -0.25049857371910056, -0.25720763495730126, -0.263910838956946, -0.2706080363223316, -0.27729907777720597, -0.2839838141547559, -0.2906620963876234, -0.2973337754979679, -0.30399870258753176, -0.31065672882775436, -0.31730770544992165, -0.3239514837353095, -0.33058791500538415, -0.33721685061200596, -0.3438381419276467, -0.35045164033565307, -0.35705719722048995, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.0859327562986552, 1.0811800532568752, 1.0764026846396844, 1.0716007749035914, 1.066774448197927, 1.0619238283726538, 1.0570490389861613, 1.052150203313053, 1.0472274443519167, 1.0422808848330873, 1.0373106472263935, 1.0323168537489151, 1.0272996263727205, 1.0222590868325898, 1.0171953566337617, 1.0121085570596473, 1.0069988091795603, 1.0018662338564488, 0.9967109517546078, 0.9915330833474224, ...], y_list=[-0.2303377425333551, -0.23706347776746167, -0.24378380476755276, -0.25049857371910056, -0.25720763495730126, -0.263910838956946, -0.2706080363223316, -0.27729907777720597, -0.2839838141547559, -0.2906620963876234, -0.2973337754979679, -0.30399870258753176, -0.31065672882775436, -0.31730770544992165, -0.3239514837353095, -0.33058791500538415, -0.33721685061200596, -0.3438381419276467, -0.35045164033565307, -0.35705719722048995, ...])
    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([-5.11640494e-01, -5.23193242e-01, -5.3456...42e-01, -4.88001761e-01, -4.99908884e-01]), y = array([-1.36940223e-02, -3.04170337e-02, -4.7129...89e-02, 1.97605006e-02, 3.03377388e-03]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-5.11640494e-01, -5.23193242e-01, -5.3456...42e-01, -4.88001761e-01, -4.99908884e-01]), array([-1.36940223e-02, -3.04170337e-02, -4.7129...89e-02, 1.97605006e-02, 3.03377388e-03])], 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([-5.11640494e-01, -5.23193242e-01, -5.3456...42e-01, -4.88001761e-01, -4.99908884e-01]), array([-1.36940223e-02, -3.04170337e-02, -4.7129...89e-02, 1.97605006e-02, 3.03377388e-03])], 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([[-0.51164049, -0.52319324, -0.53456395, .... 0.03648026, 0.0197605 , -0.01369402]]), 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. , 0.00285732, 0.00569894, 0.008...297 , 0.99134181, 0.99424145, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=779, 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([[-0.51164049, -0.52319324, -0.53456395, .... 0.03648026, 0.0197605 , -0.01369402]]), 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. , 0.00285732, 0.00569894, 0.008...297 , 0.99134181, 0.99424145, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 779, 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>