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

Double Star Calculator - Orbit

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

Orbital Elements for I724

WDS:	I724	WDS ID/Discoverer
P:	180.000	Orbital period (years)
a:	0.408	Semi-major axis (arcseconds)
i:	93.7	Inclination (degrees)
Ω:	203.9	Longitude of ascending node (degrees)
T:	1978.860	Epoch of periastron passage (year)
e:	0.79	Eccentricity
ω:	121.6	Longitude of periastron (degrees)
Start-Year:	1935.0	Year
End-Year:	2115.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I724

Position:	041847.63-340716.7	Epoch-2000 right ascension and declination
WDS-ID:	04188-3407	WDS designation
Discoverer Code:	I724	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27470	HD catalog number
Hipparcos number:	20116	Hipparcos catalog number
V1:	8.3	Magnitude of the primary
V2:	9.3	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for I724

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:58:31 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 = [0.21033018183289195, 0.2092544374864871, 0.20809253145182685, 0.20684196685544493, 0.2055000937675747, 0.2040640959847004, 0.2025309763011093, 0.2008975400035471, 0.19916037659553731, 0.19731583888235166, 0.19536001975082296, 0.19328872576056155, 0.1910974472227118, 0.18878132414696164, 0.18633510734426986, 0.18375311382463017, 0.1810291754448848, 0.17815657953096642, 0.17512799990861086, 0.17193541640883556, ...], y_list = [-0.4164022217023353, -0.4153654862760345, -0.4141577192561616, -0.41277349613913694, -0.411207054984155, -0.40945226647382127, -0.40750260048442255, -0.40535108859063324, -0.4029902822509146, -0.40041220521722015, -0.39760830023105476, -0.3945693684041646, -0.3912855003202701, -0.3877459973987153, -0.3839392818005036, -0.379852792790709, -0.37547286701282956, -0.37078459955360044, -0.3657716819456905, -0.3604162123231137, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.21033018183289195, 0.2092544374864871, 0.20809253145182685, 0.20684196685544493, 0.2055000937675747, 0.2040640959847004, 0.2025309763011093, 0.2008975400035471, 0.19916037659553731, 0.19731583888235166, 0.19536001975082296, 0.19328872576056155, 0.1910974472227118, 0.18878132414696164, 0.18633510734426986, 0.18375311382463017, 0.1810291754448848, 0.17815657953096642, 0.17512799990861086, 0.17193541640883556, ...], y_list=[-0.4164022217023353, -0.4153654862760345, -0.4141577192561616, -0.41277349613913694, -0.411207054984155, -0.40945226647382127, -0.40750260048442255, -0.40535108859063324, -0.4029902822509146, -0.40041220521722015, -0.39760830023105476, -0.3945693684041646, -0.3912855003202701, -0.3877459973987153, -0.3839392818005036, -0.379852792790709, -0.37547286701282956, -0.37078459955360044, -0.3657716819456905, -0.3604162123231137, ...])

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([ 0.00481108, 0.01967085, 0.03349488, 0... , -0.03515069, -0.02429337, -0.01037007]), y = array([-0.02615336, -0.05969009, -0.0900375 , -0...8, 0.07249839, 0.04369787, 0.00939038]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([ 0.00481108, 0.01967085, 0.03349488, 0... , -0.03515069, -0.02429337, -0.01037007]), array([-0.02615336, -0.05969009, -0.0900375 , -0...8, 0.07249839, 0.04369787, 0.00939038])], 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([ 0.00481108, 0.01967085, 0.03349488, 0... , -0.03515069, -0.02429337, -0.01037007]), array([-0.02615336, -0.05969009, -0.0900375 , -0...8, 0.07249839, 0.04369787, 0.00939038])], 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([[ 0.00481108, 0.01967085, 0.03349488, ... 0.07249839, 0.04369787, -0.02615336]]), w=array([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. , 0.03009489, 0.05745468, 0.082...4066, 0.91266321, 0.93791558, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=187, 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([[ 0.00481108, 0.01967085, 0.03349488, ... 0.07249839, 0.04369787, -0.02615336]]), w = array([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. , 0.03009489, 0.05745468, 0.082...4066, 0.91266321, 0.93791558, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 187, 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>