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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:25:04

Orbital Elements for STF1863

WDS:	STF1863	WDS ID/Discoverer
P:	538.000	Orbital period (years)
a:	1.08	Semi-major axis (arcseconds)
i:	108.2	Inclination (degrees)
Ω:	140.2	Longitude of ascending node (degrees)
T:	1774.300	Epoch of periastron passage (year)
e:	0.91	Eccentricity
ω:	269.0	Longitude of periastron (degrees)
Start-Year:	1756.0	Year
End-Year:	2294.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1863

Position:	143800.71+513442.1	Epoch-2000 right ascension and declination
WDS-ID:	14380+5135	WDS designation
Discoverer Code:	STF1863	Discover designation and components
ADS number:	9329	Aitken Double Star catalog
HD number:	128941	HD catalog number
Hipparcos number:	71548	Hipparcos catalog number
V1:	7.71	Magnitude of the primary
V2:	7.80	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:		Flags

Double Star Orbit for STF1863

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:25:04 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 = [0.14208158429998452, 0.14341389576150532, 0.14454273416816146, 0.14543893621306286, 0.14606730004927496, 0.1463848487059409, 0.1463384362226039, 0.14586138107193003, 0.1448686248164265, 0.143249594522715, 0.140857384486464, 0.13749185533760314, 0.13287236248206621, 0.12659235130110671, 0.11804205996644435, 0.106278661380295, 0.08983913229190536, 0.06668024176373998, 0.035254762377495974, -0.0021637833659802048, ...], y_list = [0.3502057065289753, 0.34107683173752285, 0.33146439824958535, 0.321318910731346, 0.3105822056255193, 0.2991852569651543, 0.28704524220983935, 0.27406155252947456, 0.26011026893509603, 0.24503636563300754, 0.22864248272285934, 0.21067245737577284, 0.19078679644642818, 0.16852617593787256, 0.14325945290765302, 0.11412388061427886, 0.08003045585429208, 0.04008928290634624, -0.004561222978553792, -0.04824421489579941, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.14208158429998452, 0.14341389576150532, 0.14454273416816146, 0.14543893621306286, 0.14606730004927496, 0.1463848487059409, 0.1463384362226039, 0.14586138107193003, 0.1448686248164265, 0.143249594522715, 0.140857384486464, 0.13749185533760314, 0.13287236248206621, 0.12659235130110671, 0.11804205996644435, 0.106278661380295, 0.08983913229190536, 0.06668024176373998, 0.035254762377495974, -0.0021637833659802048, ...], y_list=[0.3502057065289753, 0.34107683173752285, 0.33146439824958535, 0.321318910731346, 0.3105822056255193, 0.2991852569651543, 0.28704524220983935, 0.27406155252947456, 0.26011026893509603, 0.24503636563300754, 0.22864248272285934, 0.21067245737577284, 0.19078679644642818, 0.16852617593787256, 0.14325945290765302, 0.11412388061427886, 0.08003045585429208, 0.04008928290634624, -0.004561222978553792, -0.04824421489579941, ...])

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([-6.32211287e-01, -6.31586844e-01, -6.3093....33927788e-01, -6.33381468e-01, -6.32809397e-01]), y = array([-0.00173903, -0.00452753, -0.00731584, -0...00941456, 0.00662645, 0.00383808, 0.00104954]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-6.32211287e-01, -6.31586844e-01, -6.3093....33927788e-01, -6.33381468e-01, -6.32809397e-01]), array([-0.00173903, -0.00452753, -0.00731584, -0...00941456, 0.00662645, 0.00383808, 0.00104954])], 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([-6.32211287e-01, -6.31586844e-01, -6.3093....33927788e-01, -6.33381468e-01, -6.32809397e-01]), array([-0.00173903, -0.00452753, -0.00731584, -0...00941456, 0.00662645, 0.00383808, 0.00104954])], 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([[-0.63221129, -0.63158684, -0.63093577, .... 0.00662645, 0.00383808, -0.00173903]]), 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. , 0.00115255, 0.00230743, 0.003... 0.99541156, 0.99655555, 0.99770158, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=545, 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([[-0.63221129, -0.63158684, -0.63093577, .... 0.00662645, 0.00383808, -0.00173903]]), 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. , 0.00115255, 0.00230743, 0.003... 0.99541156, 0.99655555, 0.99770158, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 545, 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>