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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:03:27

Orbital Elements for HO98AB

WDS:	HO98AB	WDS ID/Discoverer
P:	628.000	Orbital period (years)
a:	0.433	Semi-major axis (arcseconds)
i:	123.0	Inclination (degrees)
Ω:	83.1	Longitude of ascending node (degrees)
T:	2022.210	Epoch of periastron passage (year)
e:	0.497	Eccentricity
ω:	54.2	Longitude of periastron (degrees)
Start-Year:	1711.0	Year
End-Year:	2339.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO98AB

Position:	190816.19+270539.3	Epoch-2000 right ascension and declination
WDS-ID:	19083+2706	WDS designation
Discoverer Code:	HO98AB	Discover designation and components
ADS number:	12079	Aitken Double Star catalog
HD number:	178617	HD catalog number
Hipparcos number:	93994	Hipparcos catalog number
V1:	8.28	Magnitude of the primary
V2:	8.30	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2007	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HO98AB

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:03:27 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 = [0.33607563458112427, 0.33392429594508943, 0.3317629903586693, 0.3295917804423735, 0.32741072869858784, 0.3252198975181474, 0.3230193491869175, 0.3208091458923909, 0.318589349730299, 0.3163600227112424, 0.31412122676733867, 0.3118730237588977, 0.30961547548111945, 0.30734864367081793, 0.3050725900131784, 0.3027873761485452, 0.30049306367924283, 0.2981897141764399, 0.2958773891870444, 0.2935561500036752, ...], y_list = [-0.3313077747485705, -0.33182486997882776, -0.3323320609199965, -0.3328293305396192, -0.33331666165289225, -0.333794036920949, -0.3342614388491414, -0.3347188497853148, -0.3351662519180778, -0.33560362727506726, -0.33603095772120695, -0.3364482249569592, -0.33685541051657125, -0.33725249576631394, -0.3376394619027141, -0.33801628995077776, -0.33838296076220953, -0.3387394550136198, -0.33908575320472795, -0.33942183569027967, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.33607563458112427, 0.33392429594508943, 0.3317629903586693, 0.3295917804423735, 0.32741072869858784, 0.3252198975181474, 0.3230193491869175, 0.3208091458923909, 0.318589349730299, 0.3163600227112424, 0.31412122676733867, 0.3118730237588977, 0.30961547548111945, 0.30734864367081793, 0.3050725900131784, 0.3027873761485452, 0.30049306367924283, 0.2981897141764399, 0.2958773891870444, 0.2935561500036752, ...], y_list=[-0.3313077747485705, -0.33182486997882776, -0.3323320609199965, -0.3328293305396192, -0.33331666165289225, -0.333794036920949, -0.3342614388491414, -0.3347188497853148, -0.3351662519180778, -0.33560362727506726, -0.33603095772120695, -0.3364482249569592, -0.33685541051657125, -0.33725249576631394, -0.3376394619027141, -0.33801628995077776, -0.33838296076220953, -0.3387394550136198, -0.33908575320472795, -0.33942183569027967, ...])

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([-0.26853545, -0.26977402, -0.27090807, -0...26249284, -0.26417105, -0.26573612, -0.26719021]), y = array([-0.00139451, -0.00470212, -0.00800792, -0...01182776, 0.00852623, 0.00522104, 0.00191366]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.26853545, -0.26977402, -0.27090807, -0...26249284, -0.26417105, -0.26573612, -0.26719021]), array([-0.00139451, -0.00470212, -0.00800792, -0...01182776, 0.00852623, 0.00522104, 0.00191366])], 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([-0.26853545, -0.26977402, -0.27090807, -0...26249284, -0.26417105, -0.26573612, -0.26719021]), array([-0.00139451, -0.00470212, -0.00800792, -0...01182776, 0.00852623, 0.00522104, 0.00191366])], 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([[-0.26853545, -0.26977402, -0.27090807, .... 0.00852623, 0.00522104, -0.00139451]]), 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. , 0.00177593, 0.00353325, 0.005... 0.99268691, 0.99454916, 0.996388 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=635, 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([[-0.26853545, -0.26977402, -0.27090807, .... 0.00852623, 0.00522104, -0.00139451]]), 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. , 0.00177593, 0.00353325, 0.005... 0.99268691, 0.99454916, 0.996388 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 635, 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>