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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:58:00

Orbital Elements for RMK3
WDS: RMK3 WDS ID/Discoverer
P: 26000.000 Orbital period (years)
a: 14.0 Semi-major axis (arcseconds)
i: 105.0 Inclination (degrees)
Ω: 55.0 Longitude of ascending node (degrees)
T: 4900.000 Epoch of periastron passage (year)
e: 0.8 Eccentricity
ω: 210.0 Longitude of periastron (degrees)
Start-Year: -10975.0 Year
End-Year: 15025.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RMK3
Position: 041740.27-631519.7 Epoch-2000 right ascension and declination
WDS-ID: 04177-6315 WDS designation
Discoverer Code: RMK3 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 27657 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 6.04 Magnitude of the primary
V2: 7.67 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2015 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for RMK3
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 16:58:01 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 = [-17.05767388285821, -17.057563150100872, -17.057452228202003, -17.05734111717661, -17.057229817039712, -17.05711832780631, -17.057006649491388, -17.056894782109964, -17.056782725676996, -17.056670480207497, -17.05655804571644, -17.056445422218793, -17.056332609729537, -17.056219608263643, -17.056106417836055, -17.055993038461757, -17.05587947015569, -17.0557657129328, -17.055651766808047, -17.055537631796366, ...], y_list = [14.884001902879355, 14.884336492309794, 14.884670916696377, 14.885005176047398, 14.885339270371194, 14.885673199676072, 14.886006963970326, 14.886340563262278, 14.886673997560223, 14.887007266872459, 14.887340371207289, 14.887673310572994, 14.888006084977874, 14.888338694430217, 14.888671138938296, 14.889003418510395, 14.889335533154796, 14.88966748287977, 14.889999267693586, 14.890330887604515, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-17.05767388285821, -17.057563150100872, -17.057452228202003, -17.05734111717661, -17.057229817039712, -17.05711832780631, -17.057006649491388, -17.056894782109964, -17.056782725676996, -17.056670480207497, -17.05655804571644, -17.056445422218793, -17.056332609729537, -17.056219608263643, -17.056106417836055, -17.055993038461757, -17.05587947015569, -17.0557657129328, -17.055651766808047, -17.055537631796366, ...], y_list=[14.884001902879355, 14.884336492309794, 14.884670916696377, 14.885005176047398, 14.885339270371194, 14.885673199676072, 14.886006963970326, 14.886340563262278, 14.886673997560223, 14.887007266872459, 14.887340371207289, 14.887673310572994, 14.888006084977874, 14.888338694430217, 14.888671138938296, 14.889003418510395, 14.889335533154796, 14.88966748287977, 14.889999267693586, 14.890330887604515, ...])
    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([-1.87885529, -1.87238341, -1.8659081 , ..., -1.89825028, -1.89178872, -1.88532373]), y = array([-0.0003737 , -0.00428727, -0.00820084, ..., 0.01136701, 0.00745345, 0.00353988]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.87885529, -1.87238341, -1.8659081 , ..., -1.89825028, -1.89178872, -1.88532373]), array([-0.0003737 , -0.00428727, -0.00820084, ..., 0.01136701, 0.00745345, 0.00353988])], 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([-1.87885529, -1.87238341, -1.8659081 , ..., -1.89825028, -1.89178872, -1.88532373]), array([-0.0003737 , -0.00428727, -0.00820084, ..., 0.01136701, 0.00745345, 0.00353988])], 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([[-1.87885529e+00, -1.87238341e+00, -1.865...13670052e-02, 7.45344843e-03, -3.73698720e-04]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 1.40632347e-04, 2.8131932... 9.99578432e-01, 9.99718900e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=26007, 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([[-1.87885529e+00, -1.87238341e+00, -1.865...13670052e-02, 7.45344843e-03, -3.73698720e-04]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 1.40632347e-04, 2.8131932... 9.99578432e-01, 9.99718900e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 26007, 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>