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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:06:21

Orbital Elements for HDS2772
WDS: HDS2772 WDS ID/Discoverer
P: 80.000 Orbital period (years)
a: 0.301 Semi-major axis (arcseconds)
i: 66.8 Inclination (degrees)
Ω: 168.4 Longitude of ascending node (degrees)
T: 2020.248 Epoch of periastron passage (year)
e: 0.7 Eccentricity
ω: 153.6 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 HDS2772
Position: 193008.30-490357.4 Epoch-2000 right ascension and declination
WDS-ID: 19301-4904 WDS designation
Discoverer Code: HDS2772 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 183074 HD catalog number
Hipparcos number: 95891 Hipparcos catalog number
V1: 10.10 Magnitude of the primary
V2: 13.00 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2019 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS2772
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:06:21 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 = [-0.16536717208191987, -0.1616729406286849, -0.15776654951997438, -0.1536495911745636, -0.14932345610743317, -0.14478934702887114, -0.14004829353002946, -0.13510116792581423, -0.12994870279774817, -0.12459151179989843, -0.11903011356440346, -0.11326496167650514, -0.10729648180978234, -0.10112511908127009, -0.09475139931869445, -0.08817600942267521, -0.081399904097774, -0.07442444929948383, -0.06725161732972255, -0.0598842554699661, ...], y_list = [-0.44861585707533486, -0.45069707014498994, -0.4521868018592061, -0.4530729588095211, -0.45334224463769207, -0.4529800508687951, -0.4519703315590575, -0.4502954589713188, -0.4479360568170824, -0.44487080723975364, -0.44107622591530316, -0.43652639963593004, -0.4311926782496857, -0.42504331141372825, -0.41804301798110455, -0.41015247263259796, -0.4013276901513317, -0.3915192822072134, -0.38067155423003474, -0.3687214003272867, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.16536717208191987, -0.1616729406286849, -0.15776654951997438, -0.1536495911745636, -0.14932345610743317, -0.14478934702887114, -0.14004829353002946, -0.13510116792581423, -0.12994870279774817, -0.12459151179989843, -0.11903011356440346, -0.11326496167650514, -0.10729648180978234, -0.10112511908127009, -0.09475139931869445, -0.08817600942267521, -0.081399904097774, -0.07442444929948383, -0.06725161732972255, -0.0598842554699661, ...], y_list=[-0.44861585707533486, -0.45069707014498994, -0.4521868018592061, -0.4530729588095211, -0.45334224463769207, -0.4529800508687951, -0.4519703315590575, -0.4502954589713188, -0.4479360568170824, -0.44487080723975364, -0.44107622591530316, -0.43652639963593004, -0.4311926782496857, -0.42504331141372825, -0.41804301798110455, -0.41015247263259796, -0.4013276901513317, -0.3915192822072134, -0.38067155423003474, -0.3687214003272867, ...])
    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([-0.09643856, -0.10740389, -0.11733657, -0... , -0.05584925, -0.07083681, -0.08430399]), y = array([-3.17133803e-04, -2.10741824e-02, -4.1635...07e-02, 4.08426479e-02, 2.04332764e-02]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.09643856, -0.10740389, -0.11733657, -0... , -0.05584925, -0.07083681, -0.08430399]), array([-3.17133803e-04, -2.10741824e-02, -4.1635...07e-02, 4.08426479e-02, 2.04332764e-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([-0.09643856, -0.10740389, -0.11733657, -0... , -0.05584925, -0.07083681, -0.08430399]), array([-3.17133803e-04, -2.10741824e-02, -4.1635...07e-02, 4.08426479e-02, 2.04332764e-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([[-9.64385577e-02, -1.07403893e-01, -1.173...03413707e-02, 4.08426479e-02, -3.17133803e-04]]), 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. , 0.01857912, 0.03665097, 0.054...854 , 0.94217365, 0.96163747, 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([[-9.64385577e-02, -1.07403893e-01, -1.173...03413707e-02, 4.08426479e-02, -3.17133803e-04]]), 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. , 0.01857912, 0.03665097, 0.054...854 , 0.94217365, 0.96163747, 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>