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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:01:58

Orbital Elements for HDS1579

WDS:	HDS1579	WDS ID/Discoverer
P:	100.000	Orbital period (years)
a:	0.27	Semi-major axis (arcseconds)
i:	131.0	Inclination (degrees)
Ω:	239.8	Longitude of ascending node (degrees)
T:	2011.000	Epoch of periastron passage (year)
e:	0.447	Eccentricity
ω:	84.3	Longitude of periastron (degrees)
Start-Year:	1975.0	Year
End-Year:	2075.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1579

Position:	110416.68-364317.6	Epoch-2000 right ascension and declination
WDS-ID:	11043-3643	WDS designation
Discoverer Code:	HDS1579	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	7.26	Magnitude of the primary
V2:	10.09	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:		Flags

Double Star Orbit for HDS1579

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:01:58 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 = [0.20784887279409875, 0.2140166680356133, 0.2198420490276318, 0.22530511017111726, 0.23038479077531682, 0.23505875126278863, 0.23930323687041186, 0.24309292746599787, 0.24640077150437015, 0.2491978035217647, 0.2514529424029636, 0.25313276983222915, 0.25420128752207555, 0.2546196527856387, 0.2543458930336076, 0.2533346015261063, 0.25153661950074796, 0.24889871415930445, 0.24536326871073788, 0.2408680108902037, ...], y_list = [0.1467584056761251, 0.13818377075369187, 0.1293881453399486, 0.12037937980575501, 0.1111658880987951, 0.1017567490273914, 0.09216182326839223, 0.08239188891060932, 0.07245880033780978, 0.06237567236992883, 0.05215709806194825, 0.04181940465865609, 0.03138095642753915, 0.020862513954630877, 0.010287661694846439, -0.0003166819320852742, -0.010919654673330337, -0.02148572022434681, -0.031973793435599626, -0.04233619309116376, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.20784887279409875, 0.2140166680356133, 0.2198420490276318, 0.22530511017111726, 0.23038479077531682, 0.23505875126278863, 0.23930323687041186, 0.24309292746599787, 0.24640077150437015, 0.2491978035217647, 0.2514529424029636, 0.25313276983222915, 0.25420128752207555, 0.2546196527856387, 0.2543458930336076, 0.2533346015261063, 0.25153661950074796, 0.24889871415930445, 0.24536326871073788, 0.2408680108902037, ...], y_list=[0.1467584056761251, 0.13818377075369187, 0.1293881453399486, 0.12037937980575501, 0.1111658880987951, 0.1017567490273914, 0.09216182326839223, 0.08239188891060932, 0.07245880033780978, 0.06237567236992883, 0.05215709806194825, 0.04181940465865609, 0.03138095642753915, 0.020862513954630877, 0.010287661694846439, -0.0003166819320852742, -0.010919654673330337, -0.02148572022434681, -0.031973793435599626, -0.04233619309116376, ...])

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([-0.1387287 , -0.12230309, -0.10360837, -0... , -0.17438864, -0.16469283, -0.15284255]), y = array([-0.01180095, -0.0297234 , -0.04708752, -0...9, 0.04208396, 0.02436123, 0.00632432]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.1387287 , -0.12230309, -0.10360837, -0... , -0.17438864, -0.16469283, -0.15284255]), array([-0.01180095, -0.0297234 , -0.04708752, -0...9, 0.04208396, 0.02436123, 0.00632432])], 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([-0.1387287 , -0.12230309, -0.10360837, -0... , -0.17438864, -0.16469283, -0.15284255]), array([-0.01180095, -0.0297234 , -0.04708752, -0...9, 0.04208396, 0.02436123, 0.00632432])], 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([[-0.1387287 , -0.12230309, -0.10360837, -... 0.04208396, 0.02436123, -0.01180095]]), 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. , 0.0183729 , 0.03765571, 0.057...2204, 0.95108827, 0.96635562, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=107, 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([[-0.1387287 , -0.12230309, -0.10360837, -... 0.04208396, 0.02436123, -0.01180095]]), 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. , 0.0183729 , 0.03765571, 0.057...2204, 0.95108827, 0.96635562, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 107, 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>