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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:07

Orbital Elements for A2570

WDS:	A2570	WDS ID/Discoverer
P:	174.000	Orbital period (years)
a:	0.245	Semi-major axis (arcseconds)
i:	114.3	Inclination (degrees)
Ω:	122.9	Longitude of ascending node (degrees)
T:	2023.500	Epoch of periastron passage (year)
e:	0.83	Eccentricity
ω:	329.4	Longitude of periastron (degrees)
Start-Year:	1938.0	Year
End-Year:	2112.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2570

Position:	102558.68+025545.2	Epoch-2000 right ascension and declination
WDS-ID:	10260+0256	WDS designation
Discoverer Code:	A2570	Discover designation and components
ADS number:	7769	Aitken Double Star catalog
HD number:	90361	HD catalog number
Hipparcos number:	51061	Hipparcos catalog number
V1:	7.79	Magnitude of the primary
V2:	7.71	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for A2570

--> -->

ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:58:07 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 = [0.2754475302799919, 0.2770018698459494, 0.2784971727059041, 0.27993302559305916, 0.2813089948943951, 0.2826246260557652, 0.2838794428060192, 0.285072946554783, 0.2862046155642796, 0.28727390414733056, 0.2882802417987425, 0.28922303226971724, 0.29010165258128784, 0.29091545197247287, 0.2916637507784255, 0.2923458392334252, 0.2929609761930935, 0.29350838776967625, 0.2939872658736491, 0.294396766654259, ...], y_list = [0.2883214559501317, 0.2881423355232182, 0.28790180413629907, 0.28759981531852974, 0.2872363029878627, 0.2868111813197327, 0.2863243446247898, 0.2857756671249677, 0.2851650027469029, 0.28449218485569316, 0.28375702595426006, 0.2829593173431239, 0.28209882873911035, 0.28117530785130074, 0.28018847991233314, 0.2791380471629357, 0.27802368828732393, 0.2768450577968358, 0.27560178535888885, 0.27429347506802976, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.2754475302799919, 0.2770018698459494, 0.2784971727059041, 0.27993302559305916, 0.2813089948943951, 0.2826246260557652, 0.2838794428060192, 0.285072946554783, 0.2862046155642796, 0.28727390414733056, 0.2882802417987425, 0.28922303226971724, 0.29010165258128784, 0.29091545197247287, 0.2916637507784255, 0.2923458392334252, 0.2929609761930935, 0.29350838776967625, 0.2939872658736491, 0.294396766654259, ...], y_list=[0.2883214559501317, 0.2881423355232182, 0.28790180413629907, 0.28759981531852974, 0.2872363029878627, 0.2868111813197327, 0.2863243446247898, 0.2857756671249677, 0.2851650027469029, 0.28449218485569316, 0.28375702595426006, 0.2829593173431239, 0.28209882873911035, 0.28117530785130074, 0.28018847991233314, 0.2791380471629357, 0.27802368828732393, 0.2768450577968358, 0.27560178535888885, 0.27429347506802976, ...])

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([-0.04740563, -0.04362865, -0.03343413, -0...03722488, -0.0415441 , -0.04507939, -0.04733417]), y = array([-0.00949694, -0.01904488, -0.0256257 , -0...03113879, 0.0214215 , 0.01131404, 0.00090826]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.04740563, -0.04362865, -0.03343413, -0...03722488, -0.0415441 , -0.04507939, -0.04733417]), array([-0.00949694, -0.01904488, -0.0256257 , -0...03113879, 0.0214215 , 0.01131404, 0.00090826])], 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([-0.04740563, -0.04362865, -0.03343413, -0...03722488, -0.0415441 , -0.04507939, -0.04733417]), array([-0.00949694, -0.01904488, -0.0256257 , -0...03113879, 0.0214215 , 0.01131404, 0.00090826])], 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([[-0.04740563, -0.04362865, -0.03343413, -...3113879, 0.0214215 , 0.01131404, -0.00949694]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.01055177, 0.02302136, 0.041... 0.95654837, 0.96747638, 0.97848037, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=181, 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([[-0.04740563, -0.04362865, -0.03343413, -...3113879, 0.0214215 , 0.01131404, -0.00949694]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.01055177, 0.02302136, 0.041... 0.95654837, 0.96747638, 0.97848037, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 181, 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>