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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:31:58

Orbital Elements for JSP31

WDS:	JSP31	WDS ID/Discoverer
P:	250.000	Orbital period (years)
a:	0.43	Semi-major axis (arcseconds)
i:	112.1	Inclination (degrees)
Ω:	25.5	Longitude of ascending node (degrees)
T:	1968.230	Epoch of periastron passage (year)
e:	0.5	Eccentricity
ω:	180.1	Longitude of periastron (degrees)
Start-Year:	1900.0	Year
End-Year:	2150.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for JSP31

Position:	015406.06-772928.5	Epoch-2000 right ascension and declination
WDS-ID:	01541-7729	WDS designation
Discoverer Code:	JSP31	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	12121	HD catalog number
Hipparcos number:	8866	Hipparcos catalog number
V1:	7.55	Magnitude of the primary
V2:	8.25	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for JSP31

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:31:58 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 = [-0.08460414976039725, -0.08015187355141458, -0.0756742732269975, -0.07117226710726227, -0.06664681817366536, -0.06209893726223946, -0.05752968650142558, -0.05294018301607814, -0.04833160292131871, -0.0437051856321984, -0.0390622385176741, -0.034404141930184366, -0.029732354645204614, -0.025048419748540024, -0.020353971012853807, -0.015650739809039964, -0.010940562602554188, -0.006225389089779785, -0.0015072910349247777, 0.0032115281261302286, ...], y_list = [0.45273302225727025, 0.4468033763660606, 0.44073254201771456, 0.43451954411304217, 0.42816339863578445, 0.4216631140354113, 0.4150176928137712, 0.4082261333410196, 0.4012874319294747, 0.39420058519769247, 0.38696459276117934, 0.3795784602908463, 0.37204120298564564, 0.3643518495118544, 0.3565094464683551, 0.34851306344508465, 0.3403617987507007, 0.3320547858956614, 0.32359120092843907, 0.3149702707357178, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.08460414976039725, -0.08015187355141458, -0.0756742732269975, -0.07117226710726227, -0.06664681817366536, -0.06209893726223946, -0.05752968650142558, -0.05294018301607814, -0.04833160292131871, -0.0437051856321984, -0.0390622385176741, -0.034404141930184366, -0.029732354645204614, -0.025048419748540024, -0.020353971012853807, -0.015650739809039964, -0.010940562602554188, -0.006225389089779785, -0.0015072910349247777, 0.0032115281261302286, ...], y_list=[0.45273302225727025, 0.4468033763660606, 0.44073254201771456, 0.43451954411304217, 0.42816339863578445, 0.4216631140354113, 0.4150176928137712, 0.4082261333410196, 0.4012874319294747, 0.39420058519769247, 0.38696459276117934, 0.3795784602908463, 0.37204120298564564, 0.3643518495118544, 0.3565094464683551, 0.34851306344508465, 0.3403617987507007, 0.3320547858956614, 0.32359120092843907, 0.3149702707357178, ...])

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([-0.14064269, -0.13378986, -0.12677092, -0...3, -0.16021215, -0.15385272, -0.14732999]), y = array([-6.76562202e-03, -1.71993676e-02, -2.7611....45369323e-02, 1.41140112e-02, 3.67619823e-03]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.14064269, -0.13378986, -0.12677092, -0...3, -0.16021215, -0.15385272, -0.14732999]), array([-6.76562202e-03, -1.71993676e-02, -2.7611....45369323e-02, 1.41140112e-02, 3.67619823e-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([-0.14064269, -0.13378986, -0.12677092, -0...3, -0.16021215, -0.15385272, -0.14732999]), array([-6.76562202e-03, -1.71993676e-02, -2.7611....45369323e-02, 1.41140112e-02, 3.67619823e-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([[-1.40642689e-01, -1.33789861e-01, -1.267...e-02, 1.41140112e-02, -6.76562202e-03]]), 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. , 0.00653999, 0.01311882, 0.019...1645, 0.98065849, 0.98705538, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=257, 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([[-1.40642689e-01, -1.33789861e-01, -1.267...e-02, 1.41140112e-02, -6.76562202e-03]]), 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. , 0.00653999, 0.01311882, 0.019...1645, 0.98065849, 0.98705538, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 257, 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>