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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:22:20

Orbital Elements for A651
WDS: A651 WDS ID/Discoverer
P: 1530.000 Orbital period (years)
a: 1.96 Semi-major axis (arcseconds)
i: 121.3 Inclination (degrees)
Ω: 179.3 Longitude of ascending node (degrees)
T: 1907.000 Epoch of periastron passage (year)
e: 0.633 Eccentricity
ω: 319.5 Longitude of periastron (degrees)
Start-Year: 1260.0 Year
End-Year: 2790.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A651
Position: 004322.78+472618.8 Epoch-2000 right ascension and declination
WDS-ID: 00434+4726 WDS designation
Discoverer Code: A651 Discover designation and components
ADS number: 601 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.67 Magnitude of the primary
V2: 10.20 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A651
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:22:20 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 = [-0.8418869739858812, -0.8399062358269281, -0.8379220687448466, -0.8359344777528193, -0.8339434678626814, -0.8319490440850437, -0.829951211429418, -0.8279499749043292, -0.8259453395174422, -0.823937310275679, -0.8219258921853365, -0.8199110902522224, -0.8178929094817674, -0.8158713548791455, -0.8138464314494094, -0.8118181441976063, -0.8097864981289074, -0.8077514982487237, -0.8057131495628516, -0.8036714570775796, ...], y_list = [2.668173543277726, 2.669432611296211, 2.6706807813326336, 2.6719180384515506, 2.67314436765718, 2.6743597538930777, 2.675564182041826, 2.676757636924728, 2.6779401033014856, 2.6791115658698845, 2.680272009265483, 2.681421418061275, 2.682559776767377, 2.6836870698307096, 2.684803281634654, 2.685908396498735, 2.687002398678286, 2.688085272364124, 2.6891570016821924, 2.6902175706932496, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.8418869739858812, -0.8399062358269281, -0.8379220687448466, -0.8359344777528193, -0.8339434678626814, -0.8319490440850437, -0.829951211429418, -0.8279499749043292, -0.8259453395174422, -0.823937310275679, -0.8219258921853365, -0.8199110902522224, -0.8178929094817674, -0.8158713548791455, -0.8138464314494094, -0.8118181441976063, -0.8097864981289074, -0.8077514982487237, -0.8057131495628516, -0.8036714570775796, ...], y_list=[2.668173543277726, 2.669432611296211, 2.6706807813326336, 2.6719180384515506, 2.67314436765718, 2.6743597538930777, 2.675564182041826, 2.676757636924728, 2.6779401033014856, 2.6791115658698845, 2.680272009265483, 2.681421418061275, 2.682559776767377, 2.6836870698307096, 2.684803281634654, 2.685908396498735, 2.687002398678286, 2.688085272364124, 2.6891570016821924, 2.6902175706932496, ...])
    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([-1.03053051, -1.02796008, -1.02537279, ..., -1.03814152, -1.03562115, -1.03308417]), y = array([-0.0010165 , -0.00717093, -0.01332523, ..., 0.01744647, 0.01129229, 0.00513793]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.03053051, -1.02796008, -1.02537279, ..., -1.03814152, -1.03562115, -1.03308417]), array([-0.0010165 , -0.00717093, -0.01332523, ..., 0.01744647, 0.01129229, 0.00513793])], 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([-1.03053051, -1.02796008, -1.02537279, ..., -1.03814152, -1.03562115, -1.03308417]), array([-0.0010165 , -0.00717093, -0.01332523, ..., 0.01744647, 0.01129229, 0.00513793])], 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([[-1.03053051e+00, -1.02796008e+00, -1.025...74464665e-02, 1.12922909e-02, -1.01650486e-03]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 7.73184468e-04, 1.5471115... 9.97684930e-01, 9.98455871e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1537, 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([[-1.03053051e+00, -1.02796008e+00, -1.025...74464665e-02, 1.12922909e-02, -1.01650486e-03]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 7.73184468e-04, 1.5471115... 9.97684930e-01, 9.98455871e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1537, 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>