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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:05:19

Orbital Elements for A2575

WDS:	A2575	WDS ID/Discoverer
P:	230.000	Orbital period (years)
a:	0.43	Semi-major axis (arcseconds)
i:	67.0	Inclination (degrees)
Ω:	128.6	Longitude of ascending node (degrees)
T:	2080.000	Epoch of periastron passage (year)
e:	0.596	Eccentricity
ω:	75.2	Longitude of periastron (degrees)
Start-Year:	1910.0	Year
End-Year:	2140.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2575

Position:	112630.78+080541.0	Epoch-2000 right ascension and declination
WDS-ID:	11265+0806	WDS designation
Discoverer Code:	A2575	Discover designation and components
ADS number:	8160	Aitken Double Star catalog
HD number:	99420	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.1	Magnitude of the primary
V2:	10.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1995	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for A2575

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:05:19 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 = [0.22013743621458595, 0.21668249302821274, 0.213159101555329, 0.20956987580607706, 0.2059173262484953, 0.20220386587682432, 0.1984318158679936, 0.19460341085949395, 0.1907208038788541, 0.18678607095223937, 0.1828012154172688, 0.17876817196294284, 0.17468881041760653, 0.17056493930408015, 0.16639830917947138, 0.16219061577571395, 0.1579435029555693, 0.15365856549758963, 0.1493373516122328, 0.14498136589787916, ...], y_list = [0.37466102706300586, 0.3759796653503986, 0.37717954344064586, 0.3782629379757101, 0.37923204448396086, 0.3800889812415131, 0.3808357929139609, 0.3814744539926906, 0.38200687203901246, 0.3824348907484538, 0.3827602928467332, 0.38298480282813946, 0.38311008954632314, 0.3831377686668235, 0.38306940499001957, 0.3829065146526067, 0.3826505672151585, 0.3823029876428107, 0.38186515817339084, 0.38133842015522895, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.22013743621458595, 0.21668249302821274, 0.213159101555329, 0.20956987580607706, 0.2059173262484953, 0.20220386587682432, 0.1984318158679936, 0.19460341085949395, 0.1907208038788541, 0.18678607095223937, 0.1828012154172688, 0.17876817196294284, 0.17468881041760653, 0.17056493930408015, 0.16639830917947138, 0.16219061577571395, 0.1579435029555693, 0.15365856549758963, 0.1493373516122328, 0.14498136589787916, ...], y_list=[0.37466102706300586, 0.3759796653503986, 0.37717954344064586, 0.3782629379757101, 0.37923204448396086, 0.3800889812415131, 0.3808357929139609, 0.3814744539926906, 0.38200687203901246, 0.3824348907484538, 0.3827602928467332, 0.38298480282813946, 0.38311008954632314, 0.3831377686668235, 0.38306940499001957, 0.3829065146526067, 0.3826505672151585, 0.3823029876428107, 0.38186515817339084, 0.38133842015522895, ...])

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([-0.28459194, -0.28603458, -0.28733834, -0...8, -0.27948375, -0.2813115 , -0.28301586]), y = array([-0.00253096, -0.00811202, -0.01368912, -0... , 0.0142093 , 0.00863219, 0.0030513 ]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.28459194, -0.28603458, -0.28733834, -0...8, -0.27948375, -0.2813115 , -0.28301586]), array([-0.00253096, -0.00811202, -0.01368912, -0... , 0.0142093 , 0.00863219, 0.0030513 ])], 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([-0.28459194, -0.28603458, -0.28733834, -0...8, -0.27948375, -0.2813115 , -0.28301586]), array([-0.00253096, -0.00811202, -0.01368912, -0... , 0.0142093 , 0.00863219, 0.0030513 ])], 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([[-0.28459194, -0.28603458, -0.28733834, -... 0.0142093 , 0.00863219, -0.00253096]]), 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. , 0.00343678, 0.00685149, 0.010...4568, 0.98956405, 0.99306313, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=237, 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([[-0.28459194, -0.28603458, -0.28733834, -... 0.0142093 , 0.00863219, -0.00253096]]), 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. , 0.00343678, 0.00685149, 0.010...4568, 0.98956405, 0.99306313, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 237, 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>