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

Double Star Calculator - Orbit

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

Orbital Elements for I699AB
WDS: I699AB WDS ID/Discoverer
P: 290.000 Orbital period (years)
a: 2.738 Semi-major axis (arcseconds)
i: 57.7 Inclination (degrees)
Ω: 117.8 Longitude of ascending node (degrees)
T: 1884.540 Epoch of periastron passage (year)
e: 0.65 Eccentricity
ω: 207.1 Longitude of periastron (degrees)
Start-Year: 1880.0 Year
End-Year: 2170.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I699AB
Position: 000208.72-681650.6 Epoch-2000 right ascension and declination
WDS-ID: 00021-6817 WDS designation
Discoverer Code: I699AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 224953 HD catalog number
Hipparcos number: 169 Hipparcos catalog number
V1: 9.71 Magnitude of the primary
V2: 10.56 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for I699AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:16:11 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 = [0.9292666560999977, 0.8816118212084509, 0.8254738935839119, 0.7609066883033193, 0.6882386345489376, 0.6080802138261234, 0.5212953435819577, 0.4289392327350906, 0.33217465974191357, 0.23218398774775192, 0.1300927932070169, 0.02691508833122048, -0.07647734023699124, -0.17936458643616376, -0.2811730649579928, -0.3814608599488101, -0.47989892632136144, -0.576251568339236, -0.6703582080472278, -0.762117414616023, ...], y_list = [0.4219537333511462, 0.4711811119537755, 0.5158665494738697, 0.5552773087722114, 0.5887714887904713, 0.6158558542713878, 0.6362309590459742, 0.6498133090527316, 0.6567301750478648, 0.6572901045426058, 0.6519379085004819, 0.6412046826807896, 0.6256616605462673, 0.6058831042150924, 0.5824199194071141, 0.555783224083331, 0.5264359039536853, 0.4947899122044228, 0.46120731864546866, 0.4260035572745015, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.9292666560999977, 0.8816118212084509, 0.8254738935839119, 0.7609066883033193, 0.6882386345489376, 0.6080802138261234, 0.5212953435819577, 0.4289392327350906, 0.33217465974191357, 0.23218398774775192, 0.1300927932070169, 0.02691508833122048, -0.07647734023699124, -0.17936458643616376, -0.2811730649579928, -0.3814608599488101, -0.47989892632136144, -0.576251568339236, -0.6703582080472278, -0.762117414616023, ...], y_list=[0.4219537333511462, 0.4711811119537755, 0.5158665494738697, 0.5552773087722114, 0.5887714887904713, 0.6158558542713878, 0.6362309590459742, 0.6498133090527316, 0.6567301750478648, 0.6572901045426058, 0.6519379085004819, 0.6412046826807896, 0.6256616605462673, 0.6058831042150924, 0.5824199194071141, 0.555783224083331, 0.5264359039536853, 0.4947899122044228, 0.46120731864546866, 0.4260035572745015, ...])
    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([-1.6169151 , -1.68175539, -1.74470787, -1...1, -1.41045788, -1.48132825, -1.55012659]), y = array([-0.01160502, -0.05285357, -0.09404331, -0...5, 0.11200261, 0.07087974, 0.02965693]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.6169151 , -1.68175539, -1.74470787, -1...1, -1.41045788, -1.48132825, -1.55012659]), array([-0.01160502, -0.05285357, -0.09404331, -0...5, 0.11200261, 0.07087974, 0.02965693])], 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([-1.6169151 , -1.68175539, -1.74470787, -1...1, -1.41045788, -1.48132825, -1.55012659]), array([-0.01160502, -0.05285357, -0.09404331, -0...5, 0.11200261, 0.07087974, 0.02965693])], 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([[-1.6169151 , -1.68175539, -1.74470787, -... 0.11200261, 0.07087974, -0.01160502]]), 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. , 0.00621952, 0.01230807, 0.018...4972, 0.98052426, 0.9871556 , 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=297, 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([[-1.6169151 , -1.68175539, -1.74470787, -... 0.11200261, 0.07087974, -0.01160502]]), 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. , 0.00621952, 0.01230807, 0.018...4972, 0.98052426, 0.9871556 , 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 297, 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>