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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:29:24

Orbital Elements for COU1738

WDS:	COU1738	WDS ID/Discoverer
P:	270.000	Orbital period (years)
a:	0.354	Semi-major axis (arcseconds)
i:	73.1	Inclination (degrees)
Ω:	23.6	Longitude of ascending node (degrees)
T:	2038.580	Epoch of periastron passage (year)
e:	0.478	Eccentricity
ω:	212.9	Longitude of periastron (degrees)
Start-Year:	1890.0	Year
End-Year:	2160.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1738

Position:	065014.13+362407.0	Epoch-2000 right ascension and declination
WDS-ID:	06502+3624	WDS designation
Discoverer Code:	COU1738	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	49472	HD catalog number
Hipparcos number:	32798	Hipparcos catalog number
V1:	8.99	Magnitude of the primary
V2:	8.51	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:		Flags

Double Star Orbit for COU1738

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:29:24 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 = [-0.24727369968077487, -0.2478567286138728, -0.2483973823148418, -0.24889569250622084, -0.24935168791037685, -0.24976539415731688, -0.2501368339287973, -0.25046602683050545, -0.25075298942680274, -0.2509977352352777, -0.25120027472188133, -0.2513606152965518, -0.25147876130924673, -0.2515547140463195, -0.25158847172718635, -0.2515800295012498, -0.2515293794450576, -0.2514365105596891, -0.2513014087683812, -0.2511240569144161, ...], y_list = [0.40314481309435224, 0.40108406586820344, 0.3989547463857037, 0.39675741812100634, 0.3944926367337612, 0.39216095080310504, 0.3897629013422286, 0.3872990226899302, 0.3847698426004006, 0.3821758825217328, 0.379517657872288, 0.3767956783152271, 0.3740104480315508, 0.37116246599200114, 0.3682522262282113, 0.3652802181035055, 0.3622469265837803, 0.35915283250891045, 0.3559984128651602, 0.35278414105908634, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.24727369968077487, -0.2478567286138728, -0.2483973823148418, -0.24889569250622084, -0.24935168791037685, -0.24976539415731688, -0.2501368339287973, -0.25046602683050545, -0.25075298942680274, -0.2509977352352777, -0.25120027472188133, -0.2513606152965518, -0.25147876130924673, -0.2515547140463195, -0.25158847172718635, -0.2515800295012498, -0.2515293794450576, -0.2514365105596891, -0.2513014087683812, -0.2511240569144161, ...], y_list=[0.40314481309435224, 0.40108406586820344, 0.3989547463857037, 0.39675741812100634, 0.3944926367337612, 0.39216095080310504, 0.3897629013422286, 0.3872990226899302, 0.3847698426004006, 0.3821758825217328, 0.379517657872288, 0.3767956783152271, 0.3740104480315508, 0.37116246599200114, 0.3682522262282113, 0.3652802181035055, 0.3622469265837803, 0.35915283250891045, 0.3559984128651602, 0.35278414105908634, ...])

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([-1.22726871e-01, -1.19243574e-01, -1.1571....32885612e-01, -1.29547955e-01, -1.26161690e-01]), y = array([-0.00261556, -0.00860834, -0.01459761, -0...1, 0.01535981, 0.00937078, 0.00337826]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.22726871e-01, -1.19243574e-01, -1.1571....32885612e-01, -1.29547955e-01, -1.26161690e-01]), array([-0.00261556, -0.00860834, -0.01459761, -0...1, 0.01535981, 0.00937078, 0.00337826])], 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([-1.22726871e-01, -1.19243574e-01, -1.1571....32885612e-01, -1.29547955e-01, -1.26161690e-01]), array([-0.00261556, -0.00860834, -0.01459761, -0...1, 0.01535981, 0.00937078, 0.00337826])], 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([[-1.22726871e-01, -1.19243574e-01, -1.157...e-02, 9.37078436e-03, -2.61556174e-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., 1.]), u=array([0. , 0.00467638, 0.0093672 , 0.014...6379, 0.98607016, 0.99069573, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=277, 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([[-1.22726871e-01, -1.19243574e-01, -1.157...e-02, 9.37078436e-03, -2.61556174e-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., 1.]), u = array([0. , 0.00467638, 0.0093672 , 0.014...6379, 0.98607016, 0.99069573, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 277, 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>