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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:21:31

Orbital Elements for I439

WDS:	I439	WDS ID/Discoverer
P:	350.000	Orbital period (years)
a:	0.693	Semi-major axis (arcseconds)
i:	47.0	Inclination (degrees)
Ω:	116.3	Longitude of ascending node (degrees)
T:	2020.640	Epoch of periastron passage (year)
e:	0.962	Eccentricity
ω:	152.1	Longitude of periastron (degrees)
Start-Year:	1850.0	Year
End-Year:	2200.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I439

Position:	003447.47-585307.6	Epoch-2000 right ascension and declination
WDS-ID:	00348-5853	WDS designation
Discoverer Code:	I439	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	3207	HD catalog number
Hipparcos number:	2726	Hipparcos catalog number
V1:	9.96	Magnitude of the primary
V2:	9.86	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for I439

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:21:31 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 = [-1.2701286497509567, -1.2701290985750893, -1.2700752541198217, -1.2699670794471005, -1.269804533196553, -1.2695875695684662, -1.269316138304808, -1.268990184668279, -1.2686096494193952, -1.2681744687581473, -1.2676845744023697, -1.267139893424543, -1.2665403482974602, -1.2658858568432514, -1.2651763321972749, -1.2644116827697418, -1.2635918122050176, -1.2627166193385675, -1.2617859981514876, -1.2607998377225802, ...], y_list = [-0.1489994589729649, -0.15026352630523535, -0.1515211704262864, -0.15277233289376183, -0.15401695465262125, -0.1552549760150665, -0.15648633664009665, -0.15771097551265373, -0.1589288309223424, -0.1601398405290282, -0.16134394104788974, -0.162541068609683, -0.16373115851163564, -0.16491414524517417, -0.16608996247219004, -0.16725854300078433, -0.168419818760452, -0.16957372077669208, -0.17072017914500184, -0.1718591230042592, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-1.2701286497509567, -1.2701290985750893, -1.2700752541198217, -1.2699670794471005, -1.269804533196553, -1.2695875695684662, -1.269316138304808, -1.268990184668279, -1.2686096494193952, -1.2681744687581473, -1.2676845744023697, -1.267139893424543, -1.2665403482974602, -1.2658858568432514, -1.2651763321972749, -1.2644116827697418, -1.2635918122050176, -1.2627166193385675, -1.2617859981514876, -1.2607998377225802, ...], y_list=[-0.1489994589729649, -0.15026352630523535, -0.1515211704262864, -0.15277233289376183, -0.15401695465262125, -0.1552549760150665, -0.15648633664009665, -0.15771097551265373, -0.1589288309223424, -0.1601398405290282, -0.16134394104788974, -0.162541068609683, -0.16373115851163564, -0.16491414524517417, -0.16608996247219004, -0.16725854300078433, -0.168419818760452, -0.16957372077669208, -0.17072017914500184, -0.1718591230042592, ...])

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([-9.86895083e-01, -9.92952783e-01, -9.9893....68231143e-01, -9.74535145e-01, -9.80756160e-01]), y = array([-0.00080705, -0.00243878, -0.0040703 , -0...2, 0.00408797, 0.00245645, 0.00082473]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-9.86895083e-01, -9.92952783e-01, -9.9893....68231143e-01, -9.74535145e-01, -9.80756160e-01]), array([-0.00080705, -0.00243878, -0.0040703 , -0...2, 0.00408797, 0.00245645, 0.00082473])], 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([-9.86895083e-01, -9.92952783e-01, -9.9893....68231143e-01, -9.74535145e-01, -9.80756160e-01]), array([-0.00080705, -0.00243878, -0.0040703 , -0...2, 0.00408797, 0.00245645, 0.00082473])], 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([[-9.86895083e-01, -9.92952783e-01, -9.989...08796502e-03, 2.45645463e-03, -8.07054747e-04]]), w=array([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. , 0.00228363, 0.00453901, 0.006...7657, 0.99297642, 0.99534672, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=357, 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([[-9.86895083e-01, -9.92952783e-01, -9.989...08796502e-03, 2.45645463e-03, -8.07054747e-04]]), w = array([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. , 0.00228363, 0.00453901, 0.006...7657, 0.99297642, 0.99534672, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 357, 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>