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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:57:28

Orbital Elements for STF1424AB

WDS:	STF1424AB	WDS ID/Discoverer
P:	554.000	Orbital period (years)
a:	3.1	Semi-major axis (arcseconds)
i:	41.0	Inclination (degrees)
Ω:	188.0	Longitude of ascending node (degrees)
T:	1769.000	Epoch of periastron passage (year)
e:	0.93	Eccentricity
ω:	114.0	Longitude of periastron (degrees)
Start-Year:	1748.0	Year
End-Year:	2302.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1424AB

Position:	101958.35+195029.4	Epoch-2000 right ascension and declination
WDS-ID:	10200+1950	WDS designation
Discoverer Code:	STF1424AB	Discover designation and components
ADS number:	7724	Aitken Double Star catalog
HD number:	89484	HD catalog number
Hipparcos number:	50583	Hipparcos catalog number
V1:	2.37	Magnitude of the primary
V2:	3.64	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF1424AB

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:57:28 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 = [-0.39949237307687135, -0.3687792746747192, -0.3377131686727398, -0.3062878165374066, -0.2744981276522056, -0.24234077240831223, -0.20981507105158334, -0.1769242974573652, -0.1436776195652009, -0.110093038903015, -0.07620193911833038, -0.0420563047175941, -0.0077405286748788915, 0.02660857061918006, 0.06076627940193505, 0.09435384546871246, 0.1267069340541364, 0.15659336733104884, 0.18155179831755971, 0.19621337419173693, ...], y_list = [-1.5028917535867168, -1.4630194714777345, -1.4217453928738222, -1.378957188042968, -1.3345264182405756, -1.2883051400858743, -1.2401215436218629, -1.189774270639375, -1.1370248990372824, -1.0815878293202366, -1.023116412390349, -0.9611835105018195, -0.8952535995404697, -0.8246416454217467, -0.7484507780082849, -0.6654748490561901, -0.5740423674458487, -0.47176528935837647, -0.3551678748023121, -0.21943725652607196, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.39949237307687135, -0.3687792746747192, -0.3377131686727398, -0.3062878165374066, -0.2744981276522056, -0.24234077240831223, -0.20981507105158334, -0.1769242974573652, -0.1436776195652009, -0.110093038903015, -0.07620193911833038, -0.0420563047175941, -0.0077405286748788915, 0.02660857061918006, 0.06076627940193505, 0.09435384546871246, 0.1267069340541364, 0.15659336733104884, 0.18155179831755971, 0.19621337419173693, ...], y_list=[-1.5028917535867168, -1.4630194714777345, -1.4217453928738222, -1.378957188042968, -1.3345264182405756, -1.2883051400858743, -1.2401215436218629, -1.189774270639375, -1.1370248990372824, -1.0815878293202366, -1.023116412390349, -0.9611835105018195, -0.8952535995404697, -0.8246416454217467, -0.7484507780082849, -0.6654748490561901, -0.5740423674458487, -0.47176528935837647, -0.3551678748023121, -0.21943725652607196, ...])

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([-1.64648391, -1.67846892, -1.70986371, -1...51212157, -1.54673273, -1.58064329, -1.61388417]), y = array([-0.01092451, -0.02949862, -0.04806242, -0...06333582, 0.04479241, 0.02622861, 0.00765361]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.64648391, -1.67846892, -1.70986371, -1...51212157, -1.54673273, -1.58064329, -1.61388417]), array([-0.01092451, -0.02949862, -0.04806242, -0...06333582, 0.04479241, 0.02622861, 0.00765361])], 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([-1.64648391, -1.67846892, -1.70986371, -1...51212157, -1.54673273, -1.58064329, -1.61388417]), array([-0.01092451, -0.02949862, -0.04806242, -0...06333582, 0.04479241, 0.02622861, 0.00765361])], 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([[-1.64648391, -1.67846892, -1.70986371, .... 0.04479241, 0.02622861, -0.01092451]]), w=array([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. , 0.0031766 , 0.00630901, 0.009... 0.98681466, 0.99018696, 0.99350717, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=561, 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([[-1.64648391, -1.67846892, -1.70986371, .... 0.04479241, 0.02622861, -0.01092451]]), w = array([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. , 0.0031766 , 0.00630901, 0.009... 0.98681466, 0.99018696, 0.99350717, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 561, 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>