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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:29:10

Orbital Elements for RST1816
WDS: RST1816 WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.212 Semi-major axis (arcseconds)
i: 155.3 Inclination (degrees)
Ω: 70.0 Longitude of ascending node (degrees)
T: 2024.120 Epoch of periastron passage (year)
e: 0.866 Eccentricity
ω: 7.9 Longitude of periastron (degrees)
Start-Year: 1875.0 Year
End-Year: 2175.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST1816
Position: 150909.51-761409.9 Epoch-2000 right ascension and declination
WDS-ID: 15092-7614 WDS designation
Discoverer Code: RST1816 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 133123 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.9 Magnitude of the primary
V2: 10.1 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for RST1816
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:29:10 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 = [0.35084534431657, 0.3502927618834384, 0.34971652286969973, 0.3491166563278609, 0.3484931887916115, 0.3478461442869776, 0.347175544342069, 0.3464814079954494, 0.345763751803154, 0.3450225898443828, 0.3442579337258973, 0.3434697925186974, 0.3426581729719122, 0.3418230792418088, 0.3409645130473314, 0.3400824736320452, 0.3391769577595565, 0.33824795970749233, 0.3372954712600309, 0.33631948169896814, ...], y_list = [-0.18126617557809444, -0.18219952108281084, -0.18312056196774856, -0.18402923086456216, -0.184925459002404, -0.18580917617559628, -0.18668031071034166, -0.18753878943042612, -0.18838453762186647, -0.1892174789964547, -0.1900375356541519, -0.19084462811079125, -0.19163867504049084, -0.19241959351489235, -0.1931872987969948, -0.19394170433413835, -0.1946827217129854, -0.1954102606130156, -0.19612422875846872, -0.19682453186866583, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.35084534431657, 0.3502927618834384, 0.34971652286969973, 0.3491166563278609, 0.3484931887916115, 0.3478461442869776, 0.347175544342069, 0.3464814079954494, 0.345763751803154, 0.3450225898443828, 0.3442579337258973, 0.3434697925186974, 0.3426581729719122, 0.3418230792418088, 0.3409645130473314, 0.3400824736320452, 0.3391769577595565, 0.33824795970749233, 0.3372954712600309, 0.33631948169896814, ...], y_list=[-0.18126617557809444, -0.18219952108281084, -0.18312056196774856, -0.18402923086456216, -0.184925459002404, -0.18580917617559628, -0.18668031071034166, -0.18753878943042612, -0.18838453762186647, -0.1892174789964547, -0.1900375356541519, -0.19084462811079125, -0.19163867504049084, -0.19241959351489235, -0.1931872987969948, -0.19394170433413835, -0.1946827217129854, -0.1954102606130156, -0.19612422875846872, -0.19682453186866583, ...])
    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([-0.03034771, -0.03048612, -0.02800171, -0...7, -0.00584365, -0.01728816, -0.02606348]), y = array([-0.00273856, -0.01658394, -0.0291079 , -0...2, 0.03215786, 0.0234648 , 0.0113531 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.03034771, -0.03048612, -0.02800171, -0...7, -0.00584365, -0.01728816, -0.02606348]), array([-0.00273856, -0.01658394, -0.0291079 , -0...2, 0.03215786, 0.0234648 , 0.0113531 ])], 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([-0.03034771, -0.03048612, -0.02800171, -0...7, -0.00584365, -0.01728816, -0.02606348]), array([-0.00273856, -0.01658394, -0.0291079 , -0...2, 0.03215786, 0.0234648 , 0.0113531 ])], 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([[-0.03034771, -0.03048612, -0.02800171, -... 0.03215786, 0.0234648 , -0.00273856]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.01382574, 0.02657498, 0.038...7779, 0.95641498, 0.97076558, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=307, 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([[-0.03034771, -0.03048612, -0.02800171, -... 0.03215786, 0.0234648 , -0.00273856]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.01382574, 0.02657498, 0.038...7779, 0.95641498, 0.97076558, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 307, 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>