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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:13:08

Orbital Elements for DON97

WDS:	DON97	WDS ID/Discoverer
P:	258.000	Orbital period (years)
a:	0.457	Semi-major axis (arcseconds)
i:	133.8	Inclination (degrees)
Ω:	165.4	Longitude of ascending node (degrees)
T:	1952.800	Epoch of periastron passage (year)
e:	0.264	Eccentricity
ω:	205.7	Longitude of periastron (degrees)
Start-Year:	1896.0	Year
End-Year:	2154.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for DON97

Position:	051630.54-210600.3	Epoch-2000 right ascension and declination
WDS-ID:	05165-2106	WDS designation
Discoverer Code:	DON97	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	34432	HD catalog number
Hipparcos number:	24592	Hipparcos catalog number
V1:	8.07	Magnitude of the primary
V2:	9.81	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for DON97

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:13:08 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 = [-0.2975640265466012, -0.29224272233687615, -0.286755015015576, -0.2811009189174955, -0.2752805656210744, -0.2692942128209703, -0.26314225371748706, -0.25682522693798854, -0.25034382700344504, -0.24369891535067145, -0.23689153191768347, -0.22992290729573506, -0.22279447544699424, -0.2155078869813165, -0.20806502297914892, -0.20046800934008602, -0.19271923162797966, -0.18482135037358058, -0.1767773167845135, -0.1685903887997404, ...], y_list = [0.12994104300801418, 0.1390271652985177, 0.14803410479975615, 0.15695512617459428, 0.16578329348053214, 0.17451146608109755, 0.18313229486366617, 0.19163821882561027, 0.2000214620974237, 0.20827403147880444, 0.21638771457137723, 0.22435407859992204, 0.23216447002253648, 0.2398100150390731, 0.24728162111633395, 0.2545699796578462, 0.2616655699553384, 0.2685586645682744, 0.2752393362865838, 0.2816974668399983, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.2975640265466012, -0.29224272233687615, -0.286755015015576, -0.2811009189174955, -0.2752805656210744, -0.2692942128209703, -0.26314225371748706, -0.25682522693798854, -0.25034382700344504, -0.24369891535067145, -0.23689153191768347, -0.22992290729573506, -0.22279447544699424, -0.2155078869813165, -0.20806502297914892, -0.20046800934008602, -0.19271923162797966, -0.18482135037358058, -0.1767773167845135, -0.1685903887997404, ...], y_list=[0.12994104300801418, 0.1390271652985177, 0.14803410479975615, 0.15695512617459428, 0.16578329348053214, 0.17451146608109755, 0.18313229486366617, 0.19163821882561027, 0.2000214620974237, 0.20827403147880444, 0.21638771457137723, 0.22435407859992204, 0.23216447002253648, 0.2398100150390731, 0.24728162111633395, 0.2545699796578462, 0.2616655699553384, 0.2685586645682744, 0.2752393362865838, 0.2816974668399983, ...])

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([-0.35479758, -0.357679 , -0.36040422, -0...34169019, -0.34520618, -0.34856213, -0.35175895]), y = array([-2.24480819e-03, -1.18325215e-02, -2.1415....65069180e-02, 1.69292737e-02, 7.34388944e-03]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.35479758, -0.357679 , -0.36040422, -0...34169019, -0.34520618, -0.34856213, -0.35175895]), array([-2.24480819e-03, -1.18325215e-02, -2.1415....65069180e-02, 1.69292737e-02, 7.34388944e-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([-0.35479758, -0.357679 , -0.36040422, -0...34169019, -0.34520618, -0.34856213, -0.35175895]), array([-2.24480819e-03, -1.18325215e-02, -2.1415....65069180e-02, 1.69292737e-02, 7.34388944e-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([[-3.54797583e-01, -3.57679005e-01, -3.604...e-02, 1.69292737e-02, -2.24480819e-03]]), 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. , 0.00414797, 0.00827571, 0.012... 0.98321887, 0.98744131, 0.99164613, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=265, 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([[-3.54797583e-01, -3.57679005e-01, -3.604...e-02, 1.69292737e-02, -2.24480819e-03]]), 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. , 0.00414797, 0.00827571, 0.012... 0.98321887, 0.98744131, 0.99164613, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 265, 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>