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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:45:58

Orbital Elements for FIN373

WDS:	FIN373	WDS ID/Discoverer
P:	160.000	Orbital period (years)
a:	0.14	Semi-major axis (arcseconds)
i:	104.2	Inclination (degrees)
Ω:	288.2	Longitude of ascending node (degrees)
T:	1998.200	Epoch of periastron passage (year)
e:	0.203	Eccentricity
ω:	55.3	Longitude of periastron (degrees)
Start-Year:	1945.0	Year
End-Year:	2105.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for FIN373

Position:	172205.87-700723.5	Epoch-2000 right ascension and declination
WDS-ID:	17221-7007	WDS designation
Discoverer Code:	FIN373	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	156190	HD catalog number
Hipparcos number:	84979	Hipparcos catalog number
V1:	5.90	Magnitude of the primary
V2:	6.46	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for FIN373

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:45:58 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 = [0.008724207077326358, 0.013220309024850205, 0.017701946048403548, 0.022163915769310035, 0.026600865135255693, 0.03100728487426329, 0.03537750405805492, 0.03970568483138819, 0.043985817373334395, 0.048211715167024424, 0.052377010666202435, 0.05647515146010217, 0.0604993970527629, 0.06444281638897392, 0.06829828627664573, 0.07205849087450204, 0.075715922434544, 0.07926288351063555, 0.08269149086754393, 0.0859936813486107, ...], y_list = [0.043225051421476895, 0.044313775627986385, 0.045354052986552255, 0.046343971369186804, 0.047281598688568904, 0.04816498368218814, 0.04899215696759878, 0.04976113240225215, 0.05046990878476749, 0.051116471938101295, 0.05169879721886418, 0.0522148525009834, 0.05266260168597416, 0.053040008796196456, 0.05334504271156271, 0.053575682614106286, 0.05372992420849078, 0.053805786789756865, 0.05380132123215079, 0.05371461897449835, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.008724207077326358, 0.013220309024850205, 0.017701946048403548, 0.022163915769310035, 0.026600865135255693, 0.03100728487426329, 0.03537750405805492, 0.03970568483138819, 0.043985817373334395, 0.048211715167024424, 0.052377010666202435, 0.05647515146010217, 0.0604993970527629, 0.06444281638897392, 0.06829828627664573, 0.07205849087450204, 0.075715922434544, 0.07926288351063555, 0.08269149086754393, 0.0859936813486107, ...], y_list=[0.043225051421476895, 0.044313775627986385, 0.045354052986552255, 0.046343971369186804, 0.047281598688568904, 0.04816498368218814, 0.04899215696759878, 0.04976113240225215, 0.05046990878476749, 0.051116471938101295, 0.05169879721886418, 0.0522148525009834, 0.05266260168597416, 0.053040008796196456, 0.05334504271156271, 0.053575682614106286, 0.05372992420849078, 0.053805786789756865, 0.05380132123215079, 0.05371461897449835, ...])

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([-0.10872682, -0.11177273, -0.11471936, -0...6, -0.09902203, -0.10234858, -0.10558448]), y = array([-0.00151499, -0.00325759, -0.00499729, -0...6, 0.00371467, 0.00197268, 0.00022894]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.10872682, -0.11177273, -0.11471936, -0...6, -0.09902203, -0.10234858, -0.10558448]), array([-0.00151499, -0.00325759, -0.00499729, -0...6, 0.00371467, 0.00197268, 0.00022894])], 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([-0.10872682, -0.11177273, -0.11471936, -0...6, -0.09902203, -0.10234858, -0.10558448]), array([-0.00151499, -0.00325759, -0.00499729, -0...6, 0.00371467, 0.00197268, 0.00022894])], 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([[-0.10872682, -0.11177273, -0.11471936, -... 0.00371467, 0.00197268, -0.00151499]]), 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. , 0.00593472, 0.01172182, 0.017...7529, 0.98135515, 0.98770574, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=167, 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([[-0.10872682, -0.11177273, -0.11471936, -... 0.00371467, 0.00197268, -0.00151499]]), 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. , 0.00593472, 0.01172182, 0.017...7529, 0.98135515, 0.98770574, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 167, 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>