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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:34:06

Orbital Elements for WSI137AA,AB

WDS:	WSI137AA,AB	WDS ID/Discoverer
P:	38.000	Orbital period (years)
a:	0.49	Semi-major axis (arcseconds)
i:	72.1	Inclination (degrees)
Ω:	39.8	Longitude of ascending node (degrees)
T:	2007.120	Epoch of periastron passage (year)
e:	0.574	Eccentricity
ω:	135.3	Longitude of periastron (degrees)
Start-Year:	2006.0	Year
End-Year:	2044.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSI137AA,AB

Position:	222823.42-255407.7	Epoch-2000 right ascension and declination
WDS-ID:	22284-2553	WDS designation
Discoverer Code:	WSI137AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	110922	Hipparcos catalog number
V1:	13.2	Magnitude of the primary
V2:	13.2	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for WSI137AA,AB

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:34:06 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 = [-0.0526737500680151, 0.04860856104677636, 0.1336497734396109, 0.1831818601565678, 0.20250002548825227, 0.20232251930654258, 0.19006546732910834, 0.1701751613921315, 0.14535007698528224, 0.11730325691462182, 0.08717634647798969, 0.05576579749134199, 0.0236512170035732, -0.008728549561323113, -0.04102834046961776, -0.07296633004056038, -0.1043036711094234, -0.13483026659173547, -0.16435437392091118, -0.19269461005567123, ...], y_list = [-0.048644251653859646, -0.13503603988462792, -0.1770031703557697, -0.170579621953913, -0.13515687217445593, -0.08630404900039376, -0.03208344243885505, 0.023551394181630925, 0.07858649113436089, 0.13194133929868443, 0.18300748949462342, 0.23142661318187518, 0.27697754507627265, 0.3195156428685751, 0.3589386130026755, 0.39516635217392, 0.4281284942598032, 0.45775630128074085, 0.48397703280363497, 0.5067097006303709, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.0526737500680151, 0.04860856104677636, 0.1336497734396109, 0.1831818601565678, 0.20250002548825227, 0.20232251930654258, 0.19006546732910834, 0.1701751613921315, 0.14535007698528224, 0.11730325691462182, 0.08717634647798969, 0.05576579749134199, 0.0236512170035732, -0.008728549561323113, -0.04102834046961776, -0.07296633004056038, -0.1043036711094234, -0.13483026659173547, -0.16435437392091118, -0.19269461005567123, ...], y_list=[-0.048644251653859646, -0.13503603988462792, -0.1770031703557697, -0.170579621953913, -0.13515687217445593, -0.08630404900039376, -0.03208344243885505, 0.023551394181630925, 0.07858649113436089, 0.13194133929868443, 0.18300748949462342, 0.23142661318187518, 0.27697754507627265, 0.3195156428685751, 0.3589386130026755, 0.39516635217392, 0.4281284942598032, 0.45775630128074085, 0.48397703280363497, 0.5067097006303709, ...])

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([-0.05267375, -0.05267375, 0.04860856, 0...30401962, -0.26558295, -0.21304971, -0.14277058]), y = array([-0.04864425, -0.04864425, -0.13503604, -0...29871155, 0.22831902, 0.14594868, 0.05175906]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.05267375, -0.05267375, 0.04860856, 0...30401962, -0.26558295, -0.21304971, -0.14277058]), array([-0.04864425, -0.04864425, -0.13503604, -0...29871155, 0.22831902, 0.14594868, 0.05175906])], 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([-0.05267375, -0.05267375, 0.04860856, 0...30401962, -0.26558295, -0.21304971, -0.14277058]), array([-0.04864425, -0.04864425, -0.13503604, -0...29871155, 0.22831902, 0.14594868, 0.05175906])], 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([[-0.05267375, -0.05267375, 0.04860856, ...9871155, 0.22831902, 0.14594868, -0.04864425]]), 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. , 0.06774353, 0.116... 0.78114901, 0.82196263, 0.87167849, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=45, 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([[-0.05267375, -0.05267375, 0.04860856, ...9871155, 0.22831902, 0.14594868, -0.04864425]]), 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. , 0.06774353, 0.116... 0.78114901, 0.82196263, 0.87167849, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 45, 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>