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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:24:54

Orbital Elements for A347
WDS: A347 WDS ID/Discoverer
P: 258.000 Orbital period (years)
a: 0.562 Semi-major axis (arcseconds)
i: 139.6 Inclination (degrees)
Ω: 99.8 Longitude of ascending node (degrees)
T: 1930.300 Epoch of periastron passage (year)
e: 0.215 Eccentricity
ω: 92.3 Longitude of periastron (degrees)
Start-Year: 1896.0 Year
End-Year: 2154.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A347
Position: 143656.24+481317.9 Epoch-2000 right ascension and declination
WDS-ID: 14369+4813 WDS designation
Discoverer Code: A347 Discover designation and components
ADS number: 9324 Aitken Double Star catalog
HD number: 128718 HD catalog number
Hipparcos number: 71467 Hipparcos catalog number
V1: 8.68 Magnitude of the primary
V2: 8.37 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A347
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:24:54 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 = [-0.4781131987050733, -0.47126540214649776, -0.46401053032363787, -0.4563480529082511, -0.448277958446658, -0.43980078506636394, -0.4309176511562329, -0.4216302857901273, -0.4119410586395283, -0.40185300909675903, -0.3913698743075641, -0.3804961157905819, -0.36923694430233284, -0.3575983425905077, -0.34558708566629953, -0.3332107582190758, -0.32047776879462153, -0.307397360362211, -0.2939796169065908, -0.28023546569913244, ...], y_list = [0.06634199703944212, 0.07735521520335543, 0.08830158505142273, 0.09917035697501407, 0.10995051742626216, 0.12063080062316932, 0.13119970238394746, 0.14164549620147365, 0.15195625165767304, 0.1621198552635478, 0.17212403379330704, 0.18195638016044607, 0.19160438185967707, 0.20105545197122907, 0.2102969626934104, 0.21931628133560135, 0.22810080866734742, 0.23663801948041197, 0.2449155051800602, 0.25292101818020163, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.4781131987050733, -0.47126540214649776, -0.46401053032363787, -0.4563480529082511, -0.448277958446658, -0.43980078506636394, -0.4309176511562329, -0.4216302857901273, -0.4119410586395283, -0.40185300909675903, -0.3913698743075641, -0.3804961157905819, -0.36923694430233284, -0.3575983425905077, -0.34558708566629953, -0.3332107582190758, -0.32047776879462153, -0.307397360362211, -0.2939796169065908, -0.28023546569913244, ...], y_list=[0.06634199703944212, 0.07735521520335543, 0.08830158505142273, 0.09917035697501407, 0.10995051742626216, 0.12063080062316932, 0.13119970238394746, 0.14164549620147365, 0.15195625165767304, 0.1621198552635478, 0.17212403379330704, 0.18195638016044607, 0.19160438185967707, 0.20105545197122907, 0.2102969626934104, 0.21931628133560135, 0.22810080866734742, 0.23663801948041197, 0.2449155051800602, 0.25292101818020163, ...])
    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([-0.51073888, -0.51478929, -0.518452 , -0...4905921 , -0.49622658, -0.5014607 , -0.50629712]), y = array([-0.00057447, -0.01177839, -0.02297347, -0...04415664, 0.0330046 , 0.0218259 , 0.01062987]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.51073888, -0.51478929, -0.518452 , -0...4905921 , -0.49622658, -0.5014607 , -0.50629712]), array([-0.00057447, -0.01177839, -0.02297347, -0...04415664, 0.0330046 , 0.0218259 , 0.01062987])], 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([-0.51073888, -0.51478929, -0.518452 , -0...4905921 , -0.49622658, -0.5014607 , -0.50629712]), array([-0.00057447, -0.01177839, -0.02297347, -0...04415664, 0.0330046 , 0.0218259 , 0.01062987])], 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([[-0.51073888, -0.51478929, -0.518452 , -...4415664, 0.0330046 , 0.0218259 , -0.00057447]]), 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. , 0.00386738, 0.00769107, 0.011... 0.98406646, 0.98812245, 0.99212934, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=265, 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([[-0.51073888, -0.51478929, -0.518452 , -...4415664, 0.0330046 , 0.0218259 , -0.00057447]]), 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. , 0.00386738, 0.00769107, 0.011... 0.98406646, 0.98812245, 0.99212934, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 265, 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>