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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:21:52

Orbital Elements for HU742

WDS:	HU742	WDS ID/Discoverer
P:	726.000	Orbital period (years)
a:	1.457	Semi-major axis (arcseconds)
i:	107.7	Inclination (degrees)
Ω:	118.9	Longitude of ascending node (degrees)
T:	1984.000	Epoch of periastron passage (year)
e:	0.643	Eccentricity
ω:	38.1	Longitude of periastron (degrees)
Start-Year:	1662.0	Year
End-Year:	2388.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU742

Position:	140842.74+334056.9	Epoch-2000 right ascension and declination
WDS-ID:	14087+3341	WDS designation
Discoverer Code:	HU742	Discover designation and components
ADS number:	9126	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	69102	Hipparcos catalog number
V1:	8.8	Magnitude of the primary
V2:	12.3	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2011	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU742

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:21:52 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 = [1.7378617524239566, 1.7340890667730386, 1.7302862362542342, 1.726453284687487, 1.7225902355191347, 1.7186971118243286, 1.7147739363094465, 1.710820731314496, 1.706837518815519, 1.7028243204269844, 1.6987811574041773, 1.6947080506455947, 1.6906050206953243, 1.6864720877454322, 1.6823092716383456, 1.6781165918692404, 1.6738940675884209, 1.6696417176037106, 1.665359560382845, 1.6610476140558597, ...], y_list = [0.3881345804306557, 0.3848303758230356, 0.3815194814531316, 0.37820194555265196, 0.3748778163933298, 0.37154714229138425, 0.3682099716120089, 0.3648663527738958, 0.36151633425379104, 0.358159964591082, 0.3547972923924234, 0.3514283663364012, 0.3480532351782276, 0.3446719477544835, 0.34128455298789473, 0.33789109989215643, 0.33449163757679246, 0.33108621525206694, 0.3276748822339377, 0.3242576879490576, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.7378617524239566, 1.7340890667730386, 1.7302862362542342, 1.726453284687487, 1.7225902355191347, 1.7186971118243286, 1.7147739363094465, 1.710820731314496, 1.706837518815519, 1.7028243204269844, 1.6987811574041773, 1.6947080506455947, 1.6906050206953243, 1.6864720877454322, 1.6823092716383456, 1.6781165918692404, 1.6738940675884209, 1.6696417176037106, 1.665359560382845, 1.6610476140558597, ...], y_list=[0.3881345804306557, 0.3848303758230356, 0.3815194814531316, 0.37820194555265196, 0.3748778163933298, 0.37154714229138425, 0.3682099716120089, 0.3648663527738958, 0.36151633425379104, 0.358159964591082, 0.3547972923924234, 0.3514283663364012, 0.3480532351782276, 0.3446719477544835, 0.34128455298789473, 0.33789109989215643, 0.33449163757679246, 0.33108621525206694, 0.3276748822339377, 0.3242576879490576, ...])

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([-0.31012091, -0.32541779, -0.34020816, -0...5, -0.26152582, -0.27814085, -0.29435064]), y = array([-1.30729958e-02, -2.75087525e-02, -4.1901....02674237e-02, 1.58365953e-02, 1.38278983e-03]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.31012091, -0.32541779, -0.34020816, -0...5, -0.26152582, -0.27814085, -0.29435064]), array([-1.30729958e-02, -2.75087525e-02, -4.1901....02674237e-02, 1.58365953e-02, 1.38278983e-03])], 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([-0.31012091, -0.32541779, -0.34020816, -0...5, -0.26152582, -0.27814085, -0.29435064]), array([-1.30729958e-02, -2.75087525e-02, -4.1901....02674237e-02, 1.58365953e-02, 1.38278983e-03])], 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([[-0.31012091, -0.32541779, -0.34020816, .... 0.03026742, 0.0158366 , -0.013073 ]]), 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. , 0.0036167 , 0.00716541, 0.010...7503, 0.98880284, 0.99258703, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=733, 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([[-0.31012091, -0.32541779, -0.34020816, .... 0.03026742, 0.0158366 , -0.013073 ]]), 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. , 0.0036167 , 0.00716541, 0.010...7503, 0.98880284, 0.99258703, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 733, 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>