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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:25:32

Orbital Elements for RST2917

WDS:	RST2917	WDS ID/Discoverer
P:	140.000	Orbital period (years)
a:	0.317	Semi-major axis (arcseconds)
i:	135.4	Inclination (degrees)
Ω:	123.5	Longitude of ascending node (degrees)
T:	2045.000	Epoch of periastron passage (year)
e:	0.65	Eccentricity
ω:	103.2	Longitude of periastron (degrees)
Start-Year:	1955.0	Year
End-Year:	2095.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST2917

Position:	144106.74-223706.7	Epoch-2000 right ascension and declination
WDS-ID:	14411-2237	WDS designation
Discoverer Code:	RST2917	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	129065	HD catalog number
Hipparcos number:	71792	Hipparcos catalog number
V1:	7.58	Magnitude of the primary
V2:	9.02	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1997	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST2917

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:25:32 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 = [0.20583790284614903, 0.20137509447712476, 0.1968058521656598, 0.19213439253675504, 0.18736476417258255, 0.18250086082964406, 0.17754643367236592, 0.17250510262851257, 0.16738036696051029, 0.1621756151370211, 0.15689413408062147, 0.15153911786010105, 0.14611367588954202, 0.14062084069082728, 0.13506357527148724, 0.12944478016570835, 0.12376730007698895, 0.11803393089055322, 0.11224742497057862, 0.1064104981901374, ...], y_list = [-0.2837637069288572, -0.289465739780514, -0.2950147988852499, -0.3004106509382489, -0.3056530289698568, -0.31074162994727805, -0.3156761125504445, -0.3204560950862415, -0.32508115350985256, -0.3295508195257397, -0.33386457874392445, -0.33802186886979874, -0.3420220779078154, -0.34586454236113423, -0.3495485454106729, -0.3530733150581142, -0.35643802227917487, -0.3596417787543321, -0.36268363538919957, -0.36556257963808164, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.20583790284614903, 0.20137509447712476, 0.1968058521656598, 0.19213439253675504, 0.18736476417258255, 0.18250086082964406, 0.17754643367236592, 0.17250510262851257, 0.16738036696051029, 0.1621756151370211, 0.15689413408062147, 0.15153911786010105, 0.14611367588954202, 0.14062084069082728, 0.13506357527148724, 0.12944478016570835, 0.12376730007698895, 0.11803393089055322, 0.11224742497057862, 0.1064104981901374, ...], y_list=[-0.2837637069288572, -0.289465739780514, -0.2950147988852499, -0.3004106509382489, -0.3056530289698568, -0.31074162994727805, -0.3156761125504445, -0.3204560950862415, -0.32508115350985256, -0.3295508195257397, -0.33386457874392445, -0.33802186886979874, -0.3420220779078154, -0.34586454236113423, -0.3495485454106729, -0.3530733150581142, -0.35643802227917487, -0.3596417787543321, -0.36268363538919957, -0.36556257963808164, ...])

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([-0.13058689, -0.14381014, -0.15461395, -0...5, -0.07346594, -0.09559895, -0.11460823]), y = array([-0.01169702, -0.03150988, -0.05080337, -0... , 0.04700494, 0.02815021, 0.00834752]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.13058689, -0.14381014, -0.15461395, -0...5, -0.07346594, -0.09559895, -0.11460823]), array([-0.01169702, -0.03150988, -0.05080337, -0... , 0.04700494, 0.02815021, 0.00834752])], 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([-0.13058689, -0.14381014, -0.15461395, -0...5, -0.07346594, -0.09559895, -0.11460823]), array([-0.01169702, -0.03150988, -0.05080337, -0... , 0.04700494, 0.02815021, 0.00834752])], 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([[-0.13058689, -0.14381014, -0.15461395, -... 0.04700494, 0.02815021, -0.01169702]]), 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. , 0.01618816, 0.03121572, 0.045...617 , 0.94420295, 0.9639624 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=147, 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([[-0.13058689, -0.14381014, -0.15461395, -... 0.04700494, 0.02815021, -0.01169702]]), 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. , 0.01618816, 0.03121572, 0.045...617 , 0.94420295, 0.9639624 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 147, 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>