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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:19:20

Orbital Elements for DON609
WDS: DON609 WDS ID/Discoverer
P: 620.000 Orbital period (years)
a: 0.336 Semi-major axis (arcseconds)
i: 107.6 Inclination (degrees)
Ω: 123.5 Longitude of ascending node (degrees)
T: 1999.860 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 237.7 Longitude of periastron (degrees)
Start-Year: 1715.0 Year
End-Year: 2335.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DON609
Position: 133845.04-701111.7 Epoch-2000 right ascension and declination
WDS-ID: 13387-7011 WDS designation
Discoverer Code: DON609 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 118326 HD catalog number
Hipparcos number: 66572 Hipparcos catalog number
V1: 9.73 Magnitude of the primary
V2: 10.55 Magnitude of the secondary
Equinox: Equinox
Date: 2020 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for DON609
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:19:20 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 = [-0.26249719746435923, -0.2610679305257003, -0.25963059397836163, -0.2581852224155248, -0.2567318504028072, -0.255270512482556, -0.2538012431781706, -0.252324076998459, -0.2508390484420289, -0.24934619200171473, -0.24784554216903795, -0.2463371334387139, -0.2448210003131888, -0.24329717730722794, -0.24176569895254071, -0.24022659980245492, -0.23867991443663486, -0.23712567746584953, -0.23556392353679234, -0.23399468733694936, ...], y_list = [-0.011210956879773389, -0.010008590378409355, -0.00880591451866038, -0.0076029661419874175, -0.006399782178066112, -0.005196399649010206, -0.003992855673624051, -0.0027891874716862866, -0.0015854323682675164, -0.0003816277980819577, 0.0008221886901289569, 0.002025979429169641, 0.003229706628933926, 0.004433332371901932, 0.005636818608601183, 0.006840127153023215, 0.008043219677998172, 0.009246057710524128, 0.010448602627048578, 0.011650815648705405, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.26249719746435923, -0.2610679305257003, -0.25963059397836163, -0.2581852224155248, -0.2567318504028072, -0.255270512482556, -0.2538012431781706, -0.252324076998459, -0.2508390484420289, -0.24934619200171473, -0.24784554216903795, -0.2463371334387139, -0.2448210003131888, -0.24329717730722794, -0.24176569895254071, -0.24022659980245492, -0.23867991443663486, -0.23712567746584953, -0.23556392353679234, -0.23399468733694936, ...], y_list=[-0.011210956879773389, -0.010008590378409355, -0.00880591451866038, -0.0076029661419874175, -0.006399782178066112, -0.005196399649010206, -0.003992855673624051, -0.0027891874716862866, -0.0015854323682675164, -0.0003816277980819577, 0.0008221886901289569, 0.002025979429169641, 0.003229706628933926, 0.004433332371901932, 0.005636818608601183, 0.006840127153023215, 0.008043219677998172, 0.009246057710524128, 0.010448602627048578, 0.011650815648705405, ...])
    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([-2.49346192e-01, -2.50839048e-01, -2.5232...00e-01, -2.46337133e-01, -2.47845542e-01]), y = array([-0.00038163, -0.00158543, -0.00278919, -0...3, 0.00322971, 0.00202598, 0.00082219]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-2.49346192e-01, -2.50839048e-01, -2.5232...00e-01, -2.46337133e-01, -2.47845542e-01]), array([-0.00038163, -0.00158543, -0.00278919, -0...3, 0.00322971, 0.00202598, 0.00082219])], 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([-2.49346192e-01, -2.50839048e-01, -2.5232...00e-01, -2.46337133e-01, -2.47845542e-01]), array([-0.00038163, -0.00158543, -0.00278919, -0...3, 0.00322971, 0.00202598, 0.00082219])], 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([[-0.24934619, -0.25083905, -0.25232408, .... 0.00322971, 0.00202598, -0.00038163]]), 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. , 0.00142243, 0.00284033, 0.004...6546, 0.99570576, 0.99714164, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=627, 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([[-0.24934619, -0.25083905, -0.25232408, .... 0.00322971, 0.00202598, -0.00038163]]), 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. , 0.00142243, 0.00284033, 0.004...6546, 0.99570576, 0.99714164, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 627, 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>