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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:16:58

Orbital Elements for HO144

WDS:	HO144	WDS ID/Discoverer
P:	1644.000	Orbital period (years)
a:	1.031	Semi-major axis (arcseconds)
i:	91.5	Inclination (degrees)
Ω:	168.9	Longitude of ascending node (degrees)
T:	1944.840	Epoch of periastron passage (year)
e:	0.791	Eccentricity
ω:	116.9	Longitude of periastron (degrees)
Start-Year:	1203.0	Year
End-Year:	2847.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO144

Position:	205221.84+200741.6	Epoch-2000 right ascension and declination
WDS-ID:	20524+2008	WDS designation
Discoverer Code:	HO144	Discover designation and components
ADS number:	14379	Aitken Double Star catalog
HD number:	198810	HD catalog number
Hipparcos number:	103028	Hipparcos catalog number
V1:	7.98	Magnitude of the primary
V2:	8.95	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:	n	Flags

Double Star Orbit for HO144

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:16:58 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 = [-0.13729396140229472, -0.13751424855154257, -0.13773417900944768, -0.13795375202759508, -0.13817296685560984, -0.1383918227411423, -0.13861031892985673, -0.13882845466541743, -0.1390462291894759, -0.13926364174165803, -0.13948069155954984, -0.13969737787868447, -0.13991369993253064, -0.14012965695247642, -0.14034524816781793, -0.14056047280574463, -0.14077533009132603, -0.1409898192474981, -0.14120393949504959, -0.14141769005260807, ...], y_list = [-0.9152439033130251, -0.91623850867933, -0.9172307374604193, -0.9182205858975683, -0.9192080502202267, -0.9201931266459449, -0.9211758113803155, -0.9221561006169048, -0.9231339905371856, -0.9241094773104733, -0.9250825570938545, -0.9260532260321191, -0.9270214802577027, -0.9279873158906052, -0.928950729038331, -0.9299117157958164, -0.9308702722453616, -0.9318263944565597, -0.9327800784862301, -0.9337313203783452, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.13729396140229472, -0.13751424855154257, -0.13773417900944768, -0.13795375202759508, -0.13817296685560984, -0.1383918227411423, -0.13861031892985673, -0.13882845466541743, -0.1390462291894759, -0.13926364174165803, -0.13948069155954984, -0.13969737787868447, -0.13991369993253064, -0.14012965695247642, -0.14034524816781793, -0.14056047280574463, -0.14077533009132603, -0.1409898192474981, -0.14120393949504959, -0.14141769005260807, ...], y_list=[-0.9152439033130251, -0.91623850867933, -0.9172307374604193, -0.9182205858975683, -0.9192080502202267, -0.9201931266459449, -0.9211758113803155, -0.9221561006169048, -0.9231339905371856, -0.9241094773104733, -0.9250825570938545, -0.9260532260321191, -0.9270214802577027, -0.9279873158906052, -0.928950729038331, -0.9299117157958164, -0.9308702722453616, -0.9318263944565597, -0.9327800784862301, -0.9337313203783452, ...])

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([-0.00749559, -0.00965687, -0.01180558, ..., -0.00096223, -0.00314547, -0.00532422]), y = array([-0.00720631, -0.01796246, -0.02869528, ..., 0.02506042, 0.01432022, 0.00355947]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.00749559, -0.00965687, -0.01180558, ..., -0.00096223, -0.00314547, -0.00532422]), array([-0.00720631, -0.01796246, -0.02869528, ..., 0.02506042, 0.01432022, 0.00355947])], 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([-0.00749559, -0.00965687, -0.01180558, ..., -0.00096223, -0.00314547, -0.00532422]), array([-0.00720631, -0.01796246, -0.02869528, ..., 0.02506042, 0.01432022, 0.00355947])], 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([[-0.00749559, -0.00965687, -0.01180558, .... 0.02506042, 0.01432022, -0.00720631]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0. , 0.00374471, 0.00748078, ..., 0.98876308, 0.99250395, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1651, 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([[-0.00749559, -0.00965687, -0.01180558, .... 0.02506042, 0.01432022, -0.00720631]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0. , 0.00374471, 0.00748078, ..., 0.98876308, 0.99250395, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1651, 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>