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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:08:23

Orbital Elements for STF2576FG

WDS:	STF2576FG	WDS ID/Discoverer
P:	232.000	Orbital period (years)
a:	2.07	Semi-major axis (arcseconds)
i:	156.0	Inclination (degrees)
Ω:	91.0	Longitude of ascending node (degrees)
T:	1945.300	Epoch of periastron passage (year)
e:	0.77	Eccentricity
ω:	128.0	Longitude of periastron (degrees)
Start-Year:	1909.0	Year
End-Year:	2141.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2576FG

Position:	194533.53+333607.1	Epoch-2000 right ascension and declination
WDS-ID:	19464+3344	WDS designation
Discoverer Code:	STF2576FG	Discover designation and components
ADS number:	12889	Aitken Double Star catalog
HD number:	186858	HD catalog number
Hipparcos number:	97222	Hipparcos catalog number
V1:	8.47	Magnitude of the primary
V2:	8.58	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF2576FG

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:08:23 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 = [-2.211809886589552, -2.1860855463204123, -2.1591971346233256, -2.1310988882888933, -2.1017416953980788, -2.0710727485269396, -2.039035151416195, -2.005567471471015, -1.970603228990396, -1.9340703122434004, -1.8958903053394944, -1.8559777131942954, -1.8142390646656588, -1.7705718710063056, -1.724863412012757, -1.6769893165095358, -1.6268118969819634, -1.5741781902372305, -1.5189176471180765, -1.4608394051604474, ...], y_list = [-0.707812901779645, -0.6690013953826852, -0.6298337889061427, -0.5903134277601905, -0.5504445074784219, -0.5102322274957809, -0.46968297480444543, -0.4288045441816033, -0.3876064034159866, -0.34610001420743364, -0.3042992223496738, -0.2622207346704914, -0.21988470532907609, -0.1773154609269399, -0.13454240314080543, -0.09160114018607794, -0.04853491574534287, -0.00539642806169091, 0.03774983432531255, 0.08082456579638383, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-2.211809886589552, -2.1860855463204123, -2.1591971346233256, -2.1310988882888933, -2.1017416953980788, -2.0710727485269396, -2.039035151416195, -2.005567471471015, -1.970603228990396, -1.9340703122434004, -1.8958903053394944, -1.8559777131942954, -1.8142390646656588, -1.7705718710063056, -1.724863412012757, -1.6769893165095358, -1.6268118969819634, -1.5741781902372305, -1.5189176471180765, -1.4608394051604474, ...], y_list=[-0.707812901779645, -0.6690013953826852, -0.6298337889061427, -0.5903134277601905, -0.5504445074784219, -0.5102322274957809, -0.46968297480444543, -0.4288045441816033, -0.3876064034159866, -0.34610001420743364, -0.3042992223496738, -0.2622207346704914, -0.21988470532907609, -0.1773154609269399, -0.13454240314080543, -0.09160114018607794, -0.04853491574534287, -0.00539642806169091, 0.03774983432531255, 0.08082456579638383, ...])

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([-1.57417819, -1.6268119 , -1.67698932, -1...3, -1.39972907, -1.46083941, -1.51891765]), y = array([-0.00539643, -0.04853492, -0.09160114, -0...9, 0.12372968, 0.08082457, 0.03774983]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.57417819, -1.6268119 , -1.67698932, -1...3, -1.39972907, -1.46083941, -1.51891765]), array([-0.00539643, -0.04853492, -0.09160114, -0...9, 0.12372968, 0.08082457, 0.03774983])], 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([-1.57417819, -1.6268119 , -1.67698932, -1...3, -1.39972907, -1.46083941, -1.51891765]), array([-0.00539643, -0.04853492, -0.09160114, -0...9, 0.12372968, 0.08082457, 0.03774983])], 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([[-1.57417819, -1.6268119 , -1.67698932, -... 0.12372968, 0.08082457, -0.00539643]]), 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. , 0.00661736, 0.01304719, 0.019...8441, 0.97889205, 0.98615263, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=239, 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([[-1.57417819, -1.6268119 , -1.67698932, -... 0.12372968, 0.08082457, -0.00539643]]), 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. , 0.00661736, 0.01304719, 0.019...8441, 0.97889205, 0.98615263, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 239, 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>