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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:33:24

Orbital Elements for SEE16

WDS:	SEE16	WDS ID/Discoverer
P:	228.000	Orbital period (years)
a:	0.404	Semi-major axis (arcseconds)
i:	101.8	Inclination (degrees)
Ω:	33.8	Longitude of ascending node (degrees)
T:	1971.900	Epoch of periastron passage (year)
e:	0.585	Eccentricity
ω:	133.1	Longitude of periastron (degrees)
Start-Year:	1911.0	Year
End-Year:	2139.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SEE16

Position:	020559.35-220903.0	Epoch-2000 right ascension and declination
WDS-ID:	02060-2209	WDS designation
Discoverer Code:	SEE16	Discover designation and components
ADS number:	1665	Aitken Double Star catalog
HD number:	12912	HD catalog number
Hipparcos number:	9798	Hipparcos catalog number
V1:	8.88	Magnitude of the primary
V2:	9.30	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for SEE16

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:33:24 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 = [-0.3117729078187147, -0.3093156017440719, -0.30675536243527046, -0.30409058239986814, -0.3013195983853112, -0.2984406890827357, -0.29545207273665364, -0.2923519046604059, -0.28913827465834446, -0.28580920435710394, -0.2823626444500729, -0.2787964718614019, -0.2751084868386579, -0.2712964099867264, -0.26735787925989307, -0.26329044693445025, -0.2590915765908928, -0.2547586401431181, -0.25028891496241923, -0.24567958115693667, ...], y_list = [0.4099733713683575, 0.4091346718878128, 0.4081598185061334, 0.4070458629184703, 0.4057897425523546, 0.40438827447163284, 0.40283814889125913, 0.40113592227542644, 0.3992780099897175, 0.3972606784761629, 0.3950800369182766, 0.3927320283613946, 0.3902124202519912, 0.3875167943582119, 0.3846405360327071, 0.3815788227781677, 0.37832661207591634, 0.37487862843875186, 0.37122934965133414, 0.3673729921651427, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.3117729078187147, -0.3093156017440719, -0.30675536243527046, -0.30409058239986814, -0.3013195983853112, -0.2984406890827357, -0.29545207273665364, -0.2923519046604059, -0.28913827465834446, -0.28580920435710394, -0.2823626444500729, -0.2787964718614019, -0.2751084868386579, -0.2712964099867264, -0.26735787925989307, -0.26329044693445025, -0.2590915765908928, -0.2547586401431181, -0.25028891496241923, -0.24567958115693667, ...], y_list=[0.4099733713683575, 0.4091346718878128, 0.4081598185061334, 0.4070458629184703, 0.4057897425523546, 0.40438827447163284, 0.40283814889125913, 0.40113592227542644, 0.3992780099897175, 0.3972606784761629, 0.3950800369182766, 0.3927320283613946, 0.3902124202519912, 0.3875167943582119, 0.3846405360327071, 0.3815788227781677, 0.37832661207591634, 0.37487862843875186, 0.37122934965133414, 0.3673729921651427, ...])

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([-0.12160678, -0.11664068, -0.11162828, -0...14099634, -0.13622125, -0.13139762, -0.12652596]), y = array([-0.00289836, -0.00891402, -0.01492613, -0...02115326, 0.01514635, 0.00913405, 0.00311843]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.12160678, -0.11664068, -0.11162828, -0...14099634, -0.13622125, -0.13139762, -0.12652596]), array([-0.00289836, -0.00891402, -0.01492613, -0...02115326, 0.01514635, 0.00913405, 0.00311843])], 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([-0.12160678, -0.11664068, -0.11162828, -0...14099634, -0.13622125, -0.13139762, -0.12652596]), array([-0.00289836, -0.00891402, -0.01492613, -0...02115326, 0.01514635, 0.00913405, 0.00311843])], 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([[-0.12160678, -0.11664068, -0.11162828, -...2115326, 0.01514635, 0.00913405, -0.00289836]]), 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. , 0.00507258, 0.0101626 , 0.015... 0.97991019, 0.98490016, 0.98991256, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=235, 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([[-0.12160678, -0.11664068, -0.11162828, -...2115326, 0.01514635, 0.00913405, -0.00289836]]), 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. , 0.00507258, 0.0101626 , 0.015... 0.97991019, 0.98490016, 0.98991256, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 235, 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>