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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:17:46

Orbital Elements for SKW1AA,AB

WDS:	SKW1AA,AB	WDS ID/Discoverer
P:	178.000	Orbital period (years)
a:	0.1	Semi-major axis (arcseconds)
i:	70.0	Inclination (degrees)
Ω:	48.0	Longitude of ascending node (degrees)
T:	2021.000	Epoch of periastron passage (year)
e:	0.31	Eccentricity
ω:	300.0	Longitude of periastron (degrees)
Start-Year:	1936.0	Year
End-Year:	2114.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SKW1AA,AB

Position:	001125.83+584928.6	Epoch-2000 right ascension and declination
WDS-ID:	00114+5850	WDS designation
Discoverer Code:	SKW1AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	15.	Magnitude of the primary
V2:	19.	Magnitude of the secondary
Equinox:		Equinox
Date:	2003	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SKW1AA,AB

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:17:46 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 = [0.030367766195528927, 0.03224205202012453, 0.03409835165326485, 0.03593557536011727, 0.037752627564510255, 0.03954840586377499, 0.041321799763097675, 0.04307168986621914, 0.04479694666097182, 0.04649642947120613, 0.048168985367558634, 0.04981344806706818, 0.05142863682050683, 0.05301335528640508, 0.05456639039088547, 0.056086511172572746, 0.05757246761202985, 0.059022989445371224, 0.060436784961954086, 0.06181253978632252, ...], y_list = [-0.07697035581232686, -0.0779415713168854, -0.07886930806490858, -0.07975292327874092, -0.0805917723606545, -0.08138520843869274, -0.08213258181271006, -0.08283323962886364, -0.08348652539839374, -0.0840917786186187, -0.08464833440405224, -0.08515552314285263, -0.08561267017997688, -0.08601909552871413, -0.08637411361260246, -0.08667703304009808, -0.08692715641476319, -0.08712378018417875, -0.08726619453127711, -0.08735368331232551, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.030367766195528927, 0.03224205202012453, 0.03409835165326485, 0.03593557536011727, 0.037752627564510255, 0.03954840586377499, 0.041321799763097675, 0.04307168986621914, 0.04479694666097182, 0.04649642947120613, 0.048168985367558634, 0.04981344806706818, 0.05142863682050683, 0.05301335528640508, 0.05456639039088547, 0.056086511172572746, 0.05757246761202985, 0.059022989445371224, 0.060436784961954086, 0.06181253978632252, ...], y_list=[-0.07697035581232686, -0.0779415713168854, -0.07886930806490858, -0.07975292327874092, -0.0805917723606545, -0.08138520843869274, -0.08213258181271006, -0.08283323962886364, -0.08348652539839374, -0.0840917786186187, -0.08464833440405224, -0.08515552314285263, -0.08561267017997688, -0.08601909552871413, -0.08637411361260246, -0.08667703304009808, -0.08692715641476319, -0.08712378018417875, -0.08726619453127711, -0.08735368331232551, ...])

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([-0.05247101, -0.05100344, -0.04949303, -0...05786672, -0.05659379, -0.05526855, -0.05389349]), y = array([-0.00186558, -0.00400061, -0.00613229, -0...00667164, 0.00454164, 0.00240743, 0.00027105]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.05247101, -0.05100344, -0.04949303, -0...05786672, -0.05659379, -0.05526855, -0.05389349]), array([-0.00186558, -0.00400061, -0.00613229, -0...00667164, 0.00454164, 0.00240743, 0.00027105])], 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([-0.05247101, -0.05100344, -0.04949303, -0...05786672, -0.05659379, -0.05526855, -0.05389349]), array([-0.00186558, -0.00400061, -0.00613229, -0...00667164, 0.00454164, 0.00240743, 0.00027105])], 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([[-0.05247101, -0.05100344, -0.04949303, -...0667164, 0.00454164, 0.00240743, -0.00186558]]), 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. , 0.0059876 , 0.01202551, 0.018... 0.97665561, 0.98239038, 0.98819634, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=185, 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([[-0.05247101, -0.05100344, -0.04949303, -...0667164, 0.00454164, 0.00240743, -0.00186558]]), 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. , 0.0059876 , 0.01202551, 0.018... 0.97665561, 0.98239038, 0.98819634, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 185, 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>