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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:38:46

Orbital Elements for RMK8
WDS: RMK8 WDS ID/Discoverer
P: 30000.000 Orbital period (years)
a: 21.0 Semi-major axis (arcseconds)
i: 73.0 Inclination (degrees)
Ω: 70.4 Longitude of ascending node (degrees)
T: 1950.000 Epoch of periastron passage (year)
e: 0.8 Eccentricity
ω: 350.0 Longitude of periastron (degrees)
Start-Year: -12975.0 Year
End-Year: 17025.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RMK8
Position: 081515.91-625456.2 Epoch-2000 right ascension and declination
WDS-ID: 08153-6255 WDS designation
Discoverer Code: RMK8 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 69863 HD catalog number
Hipparcos number: 40429 Hipparcos catalog number
V1: 5.27 Magnitude of the primary
V2: 7.62 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 RMK8
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:38:47 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 = [34.45289360531884, 34.45325548180753, 34.45361709914537, 34.453978457329306, 34.45433955635624, 34.4547003962231, 34.45506097692678, 34.45542129846423, 34.455781360832304, 34.456141164027954, 34.45650070804807, 34.45685999288954, 34.45721901854928, 34.457577785024135, 34.457936292311075, 34.458294540406946, 34.45865252930863, 34.45901025901301, 34.459367729517005, 34.45972494081746, ...], y_list = [-14.271609697955066, -14.271289318311851, -14.27096883132274, -14.270648236989942, -14.27032753531575, -14.270006726302423, -14.269685809952206, -14.269364786267351, -14.269043655250155, -14.268722416902836, -14.268401071227649, -14.268079618226878, -14.267758057902734, -14.267436390257513, -14.267114615293426, -14.266792733012736, -14.2664707434177, -14.266148646510556, -14.26582644229353, -14.265504130768903, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[34.45289360531884, 34.45325548180753, 34.45361709914537, 34.453978457329306, 34.45433955635624, 34.4547003962231, 34.45506097692678, 34.45542129846423, 34.455781360832304, 34.456141164027954, 34.45650070804807, 34.45685999288954, 34.45721901854928, 34.457577785024135, 34.457936292311075, 34.458294540406946, 34.45865252930863, 34.45901025901301, 34.459367729517005, 34.45972494081746, ...], y_list=[-14.271609697955066, -14.271289318311851, -14.27096883132274, -14.270648236989942, -14.27032753531575, -14.270006726302423, -14.269685809952206, -14.269364786267351, -14.269043655250155, -14.268722416902836, -14.268401071227649, -14.268079618226878, -14.267758057902734, -14.267436390257513, -14.267114615293426, -14.266792733012736, -14.2664707434177, -14.266148646510556, -14.26582644229353, -14.265504130768903, ...])
    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([-3.65519584, -3.65183151, -3.64845794, ..., -3.66523309, -3.66189667, -3.6585509 ]), y = array([-0.00218004, -0.00661078, -0.01104151, ..., 0.01111217, 0.00668145, 0.00225071]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-3.65519584, -3.65183151, -3.64845794, ..., -3.66523309, -3.66189667, -3.6585509 ]), array([-0.00218004, -0.00661078, -0.01104151, ..., 0.01111217, 0.00668145, 0.00225071])], 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([-3.65519584, -3.65183151, -3.64845794, ..., -3.66523309, -3.66189667, -3.6585509 ]), array([-0.00218004, -0.00661078, -0.01104151, ..., 0.01111217, 0.00668145, 0.00225071])], 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([[-3.65519584e+00, -3.65183151e+00, -3.648...11121689e-02, 6.68144561e-03, -2.18004083e-03]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0.00000000e+00, 6.41451223e-05, 1.2835452... 9.99807953e-01, 9.99871904e-01, 1.00000000e+00]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=30007, 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([[-3.65519584e+00, -3.65183151e+00, -3.648...11121689e-02, 6.68144561e-03, -2.18004083e-03]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0.00000000e+00, 6.41451223e-05, 1.2835452... 9.99807953e-01, 9.99871904e-01, 1.00000000e+00]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 30007, 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>