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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:43:15

Orbital Elements for A1754
WDS: A1754 WDS ID/Discoverer
P: 452.000 Orbital period (years)
a: 0.53 Semi-major axis (arcseconds)
i: 46.0 Inclination (degrees)
Ω: 115.8 Longitude of ascending node (degrees)
T: 1975.100 Epoch of periastron passage (year)
e: 0.51 Eccentricity
ω: 292.0 Longitude of periastron (degrees)
Start-Year: 1799.0 Year
End-Year: 2251.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1754
Position: 085410.97-022836.9 Epoch-2000 right ascension and declination
WDS-ID: 08542-0229 WDS designation
Discoverer Code: A1754 Discover designation and components
ADS number: 7077 Aitken Double Star catalog
HD number: 76119 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.9 Magnitude of the primary
V2: 10.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A1754
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:43:15 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 = [0.6069951060159251, 0.60838191706716, 0.6097304559907959, 0.6110404592199268, 0.6123116601172217, 0.6135437889129991, 0.6147365726421489, 0.6158897350798667, 0.6170029966761728, 0.6180760744891742, 0.6191086821170375, 0.6201005296286461, 0.6210513234928967, 0.6219607665066001, 0.6228285577209527, 0.62365439236654, 0.6244379617768289, 0.6251789533101183, 0.6258770502698937, 0.6265319318235608, ...], y_list = [-0.17975331678954867, -0.17632019802089682, -0.17287598747516547, -0.16942085114956726, -0.1659549564438173, -0.16247847221691772, -0.15899156884528723, -0.15549441828229868, -0.15198719411926043, -0.14847007164792236, -0.14494322792454947, -0.1414068418356219, -0.13786109416523082, -0.13430616766423745, -0.13074224712125435, -0.12716951943552227, -0.12358817369176373, -0.11999840123707237, -0.11640039575993942, -0.11279435337147509, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.6069951060159251, 0.60838191706716, 0.6097304559907959, 0.6110404592199268, 0.6123116601172217, 0.6135437889129991, 0.6147365726421489, 0.6158897350798667, 0.6170029966761728, 0.6180760744891742, 0.6191086821170375, 0.6201005296286461, 0.6210513234928967, 0.6219607665066001, 0.6228285577209527, 0.62365439236654, 0.6244379617768289, 0.6251789533101183, 0.6258770502698937, 0.6265319318235608, ...], y_list=[-0.17975331678954867, -0.17632019802089682, -0.17287598747516547, -0.16942085114956726, -0.1659549564438173, -0.16247847221691772, -0.15899156884528723, -0.15549441828229868, -0.15198719411926043, -0.14847007164792236, -0.14494322792454947, -0.1414068418356219, -0.13786109416523082, -0.13430616766423745, -0.13074224712125435, -0.12716951943552227, -0.12358817369176373, -0.11999840123707237, -0.11640039575993942, -0.11279435337147509, ...])
    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([-2.54901620e-01, -2.59875035e-01, -2.6450...73e-01, -2.43916336e-01, -2.49582685e-01]), y = array([-0.00766169, -0.01696245, -0.02624091, -0...9, 0.02025118, 0.01095814, 0.0016494 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-2.54901620e-01, -2.59875035e-01, -2.6450...73e-01, -2.43916336e-01, -2.49582685e-01]), array([-0.00766169, -0.01696245, -0.02624091, -0...9, 0.02025118, 0.01095814, 0.0016494 ])], 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([-2.54901620e-01, -2.59875035e-01, -2.6450...73e-01, -2.43916336e-01, -2.49582685e-01]), array([-0.00766169, -0.01696245, -0.02624091, -0...9, 0.02025118, 0.01095814, 0.0016494 ])], 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([[-2.54901620e-01, -2.59875035e-01, -2.645...02511844e-02, 1.09581392e-02, -7.66169159e-03]]), w=array([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. , 0.00403901, 0.0080102 , 0.011...7835, 0.98748187, 0.99172098, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=459, 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([[-2.54901620e-01, -2.59875035e-01, -2.645...02511844e-02, 1.09581392e-02, -7.66169159e-03]]), w = array([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. , 0.00403901, 0.0080102 , 0.011...7835, 0.98748187, 0.99172098, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 459, 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>