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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:34:57

Orbital Elements for HU842AB

WDS:	HU842AB	WDS ID/Discoverer
P:	982.000	Orbital period (years)
a:	0.905	Semi-major axis (arcseconds)
i:	61.1	Inclination (degrees)
Ω:	26.0	Longitude of ascending node (degrees)
T:	1894.790	Epoch of periastron passage (year)
e:	0.523	Eccentricity
ω:	325.9	Longitude of periastron (degrees)
Start-Year:	1534.0	Year
End-Year:	2516.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU842AB

Position:	073725.90+385205.5	Epoch-2000 right ascension and declination
WDS-ID:	07374+3852	WDS designation
Discoverer Code:	HU842AB	Discover designation and components
ADS number:	6211	Aitken Double Star catalog
HD number:	60694	HD catalog number
Hipparcos number:	37102	Hipparcos catalog number
V1:	7.99	Magnitude of the primary
V2:	9.38	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2003	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HU842AB

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:34:57 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 = [0.39513310935599916, 0.39663408145080065, 0.39812964694022607, 0.3996197714296861, 0.4011044203340198, 0.4025835588752742, 0.4040571520804856, 0.4055251647794276, 0.4069875616023267, 0.40844430697757084, 0.40989536512937996, 0.41134070007545204, 0.41278027562458824, 0.41421405537429234, 0.4156420027083341, 0.4170640807942979, 0.41848025258109733, 0.4198904807964607, 0.4212947279443943, 0.42269295630260956, ...], y_list = [-1.2054587453864647, -1.2045748599018373, -1.2036745546273295, -1.2027577994841172, -1.2018245642008991, -1.2008748183127618, -1.1999085311600304, -1.19892567188712, -1.1979262094413756, -1.1969101125719093, -1.1958773498284245, -1.1948278895600397, -1.1937616999141014, -1.192678748834991, -1.1915790040629253, -1.190462433132751, -1.1893290033727308, -1.1881786819033227, -1.1870114356359542, -1.1858272312717903, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.39513310935599916, 0.39663408145080065, 0.39812964694022607, 0.3996197714296861, 0.4011044203340198, 0.4025835588752742, 0.4040571520804856, 0.4055251647794276, 0.4069875616023267, 0.40844430697757084, 0.40989536512937996, 0.41134070007545204, 0.41278027562458824, 0.41421405537429234, 0.4156420027083341, 0.4170640807942979, 0.41848025258109733, 0.4198904807964607, 0.4212947279443943, 0.42269295630260956, ...], y_list=[-1.2054587453864647, -1.2045748599018373, -1.2036745546273295, -1.2027577994841172, -1.2018245642008991, -1.2008748183127618, -1.1999085311600304, -1.19892567188712, -1.1979262094413756, -1.1969101125719093, -1.1958773498284245, -1.1948278895600397, -1.1937616999141014, -1.192678748834991, -1.1915790040629253, -1.190462433132751, -1.1893290033727308, -1.1881786819033227, -1.1870114356359542, -1.1858272312717903, ...])

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([-4.22723084e-01, -4.22639124e-01, -4.2253....22827784e-01, -4.22817722e-01, -4.22782719e-01]), y = array([-2.92969320e-04, -5.39931947e-03, -1.0505....50249820e-02, 9.91948245e-03, 4.81339709e-03]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-4.22723084e-01, -4.22639124e-01, -4.2253....22827784e-01, -4.22817722e-01, -4.22782719e-01]), array([-2.92969320e-04, -5.39931947e-03, -1.0505....50249820e-02, 9.91948245e-03, 4.81339709e-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([-4.22723084e-01, -4.22639124e-01, -4.2253....22827784e-01, -4.22817722e-01, -4.22782719e-01]), array([-2.92969320e-04, -5.39931947e-03, -1.0505....50249820e-02, 9.91948245e-03, 4.81339709e-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([[-4.22723084e-01, -4.22639124e-01, -4.225...50249820e-02, 9.91948245e-03, -2.92969320e-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., 1.]), u=array([0. , 0.00124804, 0.00249612, 0.003...0908, 0.99625653, 0.9975042 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=989, 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([[-4.22723084e-01, -4.22639124e-01, -4.225...50249820e-02, 9.91948245e-03, -2.92969320e-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., 1.]), u = array([0. , 0.00124804, 0.00249612, 0.003...0908, 0.99625653, 0.9975042 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 989, 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>