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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:19:36

Orbital Elements for HDS1935

WDS:	HDS1935	WDS ID/Discoverer
P:	200.000	Orbital period (years)
a:	0.9	Semi-major axis (arcseconds)
i:	128.8	Inclination (degrees)
Ω:	157.8	Longitude of ascending node (degrees)
T:	1976.700	Epoch of periastron passage (year)
e:	0.54	Eccentricity
ω:	325.1	Longitude of periastron (degrees)
Start-Year:	1925.0	Year
End-Year:	2125.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1935

Position:	134502.40+020531.6	Epoch-2000 right ascension and declination
WDS-ID:	13450+0206	WDS designation
Discoverer Code:	HDS1935	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	67086	Hipparcos catalog number
V1:	11.27	Magnitude of the primary
V2:	12.48	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:	n	Flags

Double Star Orbit for HDS1935

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:19:36 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 = [0.4338797929556129, 0.44066503237797283, 0.44723143176840374, 0.4535692474939766, 0.459668247947628, 0.4655176782766514, 0.47110622212609526, 0.47642196010841736, 0.48145232468204957, 0.48618405109041046, 0.4906031239795118, 0.49469471927673603, 0.49844314087605734, 0.5018317516364885, 0.5048428981618783, 0.5074578287929576, 0.5096566042088106, 0.5114180000082044, 0.512719400625927, 0.513536683942172, ...], y_list = [1.056533794836514, 1.0421276759916223, 1.0272040942290803, 1.0117555747353963, 0.9957744196610482, 0.9792527058880366, 0.9621822838209373, 0.9445547774593122, 0.9263615860629361, 0.9075938877860292, 0.8882426457349953, 0.8682986169990864, 0.8477523653184734, 0.8265942781940306, 0.8048145894132862, 0.7824034081740799, 0.7593507562402974, 0.7356466148725942, 0.711280983654444, 0.686243953795598, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.4338797929556129, 0.44066503237797283, 0.44723143176840374, 0.4535692474939766, 0.459668247947628, 0.4655176782766514, 0.47110622212609526, 0.47642196010841736, 0.48145232468204957, 0.48618405109041046, 0.4906031239795118, 0.49469471927673603, 0.49844314087605734, 0.5018317516364885, 0.5048428981618783, 0.5074578287929576, 0.5096566042088106, 0.5114180000082044, 0.512719400625927, 0.513536683942172, ...], y_list=[1.056533794836514, 1.0421276759916223, 1.0272040942290803, 1.0117555747353963, 0.9957744196610482, 0.9792527058880366, 0.9621822838209373, 0.9445547774593122, 0.9263615860629361, 0.9075938877860292, 0.8882426457349953, 0.8682986169990864, 0.8477523653184734, 0.8265942781940306, 0.8048145894132862, 0.7824034081740799, 0.7593507562402974, 0.7356466148725942, 0.711280983654444, 0.686243953795598, ...])

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([-0.51321714, -0.50734996, -0.50065444, -0...6, -0.52628192, -0.52264261, -0.51830074]), y = array([-0.0129306 , -0.03892556, -0.06485647, -0...3, 0.06502597, 0.03908134, 0.01308454]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.51321714, -0.50734996, -0.50065444, -0...6, -0.52628192, -0.52264261, -0.51830074]), array([-0.0129306 , -0.03892556, -0.06485647, -0...3, 0.06502597, 0.03908134, 0.01308454])], 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([-0.51321714, -0.50734996, -0.50065444, -0...6, -0.52628192, -0.52264261, -0.51830074]), array([-0.0129306 , -0.03892556, -0.06485647, -0...3, 0.06502597, 0.03908134, 0.01308454])], 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([[-0.51321714, -0.50734996, -0.50065444, -... 0.06502597, 0.03908134, -0.0129306 ]]), 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. , 0.00613729, 0.0123051 , 0.018...9739, 0.98179285, 0.98782644, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=207, 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([[-0.51321714, -0.50734996, -0.50065444, -... 0.06502597, 0.03908134, -0.0129306 ]]), 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. , 0.00613729, 0.0123051 , 0.018...9739, 0.98179285, 0.98782644, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 207, 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>