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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:19:05

Orbital Elements for B811

WDS:	B811	WDS ID/Discoverer
P:	300.000	Orbital period (years)
a:	0.772	Semi-major axis (arcseconds)
i:	96.3	Inclination (degrees)
Ω:	85.4	Longitude of ascending node (degrees)
T:	2116.200	Epoch of periastron passage (year)
e:	0.87	Eccentricity
ω:	261.2	Longitude of periastron (degrees)
Start-Year:	1875.0	Year
End-Year:	2175.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B811

Position:	133533.04-372103.1	Epoch-2000 right ascension and declination
WDS-ID:	13356-3721	WDS designation
Discoverer Code:	B811	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	118119	HD catalog number
Hipparcos number:	66325	Hipparcos catalog number
V1:	10.40	Magnitude of the primary
V2:	10.41	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for B811

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:19:06 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>

956

957 # Smooth curve if necessary

=> 958 xa_smooth, ya_smooth = Q_get_smoothed_orbit(xa_list, ya_list)

959 plt.plot(xa_smooth, ya_smooth, label=f'Orbit of {wds}', color='#528B8B')

960

xa_smooth undefined, ya_smooth undefined, Q_get_smoothed_orbit = <function Q_get_smoothed_orbit>, xa_list = [0.48321136612934124, 0.48223129701217204, 0.4811719297544426, 0.4800354035908793, 0.47882376717199565, 0.4775389838795695, 0.4761829367526323, 0.47475743305812007, 0.47326420853690976, 0.47170493135288233, 0.4700812057699105, 0.4683945755792701, 0.46664652729781486, 0.46483849315532466, 0.4629718538877415, 0.46104794135144306, 0.4590680409723746, 0.45703339404257626, 0.45494519987558174, 0.4528046178311294, ...], ya_list = [-0.14237097317490885, -0.14347979780452944, -0.1445650295854848, -0.14562708039843655, -0.14666634610003593, -0.14768320736320079, -0.14867803046040284, -0.14965116799462658, -0.15060295958221623, -0.15153373249143143, -0.15244380224017567, -0.15333347315604717, -0.15420303890157586, -0.15505278296725764, -0.15588297913476487, -0.15669389191250946, -0.15748577694554677, -0.15825888140164246, -0.15901344433517034, -0.15974969703037664, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.48321136612934124, 0.48223129701217204, 0.4811719297544426, 0.4800354035908793, 0.47882376717199565, 0.4775389838795695, 0.4761829367526323, 0.47475743305812007, 0.47326420853690976, 0.47170493135288233, 0.4700812057699105, 0.4683945755792701, 0.46664652729781486, 0.46483849315532466, 0.4629718538877415, 0.46104794135144306, 0.4590680409723746, 0.45703339404257626, 0.45494519987558174, 0.4528046178311294, ...], y_list=[-0.14237097317490885, -0.14347979780452944, -0.1445650295854848, -0.14562708039843655, -0.14666634610003593, -0.14768320736320079, -0.14867803046040284, -0.14965116799462658, -0.15060295958221623, -0.15153373249143143, -0.15244380224017567, -0.15333347315604717, -0.15420303890157586, -0.15505278296725764, -0.15588297913476487, -0.15669389191250946, -0.15748577694554677, -0.15825888140164246, -0.15901344433517034, -0.15974969703037664, ...])

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([-2.57306344e-01, -2.64942446e-01, -2.7131...55e-01, -2.37089963e-01, -2.48140732e-01]), y = array([-0.00116547, -0.00382243, -0.00646157, -0...6, 0.00675687, 0.00414882, 0.00149781]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-2.57306344e-01, -2.64942446e-01, -2.7131...55e-01, -2.37089963e-01, -2.48140732e-01]), array([-0.00116547, -0.00382243, -0.00646157, -0...6, 0.00675687, 0.00414882, 0.00149781])], 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([-2.57306344e-01, -2.64942446e-01, -2.7131...55e-01, -2.37089963e-01, -2.48140732e-01]), array([-0.00116547, -0.00382243, -0.00646157, -0...6, 0.00675687, 0.00414882, 0.00149781])], 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([[-2.57306344e-01, -2.64942446e-01, -2.713...e-03, 4.14882172e-03, -1.16547042e-03]]), 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. , 0.00486132, 0.00900817, 0.012...7607, 0.97920835, 0.98743161, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=307, 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([[-2.57306344e-01, -2.64942446e-01, -2.713...e-03, 4.14882172e-03, -1.16547042e-03]]), 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. , 0.00486132, 0.00900817, 0.012...7607, 0.97920835, 0.98743161, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 307, 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>