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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:57:20

Orbital Elements for RST3688
WDS: RST3688 WDS ID/Discoverer
P: 180.000 Orbital period (years)
a: 0.6852 Semi-major axis (arcseconds)
i: 80.9 Inclination (degrees)
Ω: 142.1 Longitude of ascending node (degrees)
T: 2005.080 Epoch of periastron passage (year)
e: 0.544 Eccentricity
ω: 278.5 Longitude of periastron (degrees)
Start-Year: 1935.0 Year
End-Year: 2115.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST3688
Position: 101916.88-123141.2 Epoch-2000 right ascension and declination
WDS-ID: 10193-1232 WDS designation
Discoverer Code: RST3688 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 89455 HD catalog number
Hipparcos number: 50536 Hipparcos catalog number
V1: 6.21 Magnitude of the primary
V2: 8.54 Magnitude of the secondary
Equinox: Equinox
Date: 2019 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for RST3688
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:57:20 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 = [0.36075385208972977, 0.3663029625225593, 0.37171513200746353, 0.3769866211301981, 0.3821135794276451, 0.3870920385420544, 0.3919179049802049, 0.3965869524440052, 0.40109481369628325, 0.40543697192235406, 0.40960875154454207, 0.41360530844305043, 0.41742161965728203, 0.42105247182161065, 0.42449244987760976, 0.42773592400226024, 0.4307770360832439, 0.43360968513374626, 0.4362275116438743, 0.43862388077433506, ...], y_list = [0.2214629664739173, 0.23089790034003982, 0.24024650949579487, 0.24950418962834714, 0.2586662088394142, 0.2677276985673326, 0.2766836439624941, 0.28552887366635515, 0.29425804893974056, 0.3028656520810232, 0.3113459740691317, 0.3196931013600616, 0.3279009020313249, 0.33596300969309695, 0.3438728085183484, 0.35162341501818056, 0.35920765943858163, 0.3666180655276969, 0.3738468287091884, 0.38088579250555843, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.36075385208972977, 0.3663029625225593, 0.37171513200746353, 0.3769866211301981, 0.3821135794276451, 0.3870920385420544, 0.3919179049802049, 0.3965869524440052, 0.40109481369628325, 0.40543697192235406, 0.40960875154454207, 0.41360530844305043, 0.41742161965728203, 0.42105247182161065, 0.42449244987760976, 0.42773592400226024, 0.4307770360832439, 0.43360968513374626, 0.4362275116438743, 0.43862388077433506, ...], y_list=[0.2214629664739173, 0.23089790034003982, 0.24024650949579487, 0.24950418962834714, 0.2586662088394142, 0.2677276985673326, 0.2766836439624941, 0.28552887366635515, 0.29425804893974056, 0.3028656520810232, 0.3113459740691317, 0.3196931013600616, 0.3279009020313249, 0.33596300969309695, 0.3438728085183484, 0.35162341501818056, 0.35920765943858163, 0.3666180655276969, 0.3738468287091884, 0.38088579250555843, ...])
    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([-6.48584071e-02, -9.03816519e-02, -1.1475...54e-02, -1.16608471e-02, -3.85040004e-02]), y = array([-3.62137962e-03, -3.85079324e-02, -7.2906...24e-02, 6.58499837e-02, 3.13117007e-02]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-6.48584071e-02, -9.03816519e-02, -1.1475...54e-02, -1.16608471e-02, -3.85040004e-02]), array([-3.62137962e-03, -3.85079324e-02, -7.2906...24e-02, 6.58499837e-02, 3.13117007e-02])], 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([-6.48584071e-02, -9.03816519e-02, -1.1475...54e-02, -1.16608471e-02, -3.85040004e-02]), array([-3.62137962e-03, -3.85079324e-02, -7.2906...24e-02, 6.58499837e-02, 3.13117007e-02])], 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([[-6.48584071e-02, -9.03816519e-02, -1.147...e-02, 6.58499837e-02, -3.62137962e-03]]), w=array([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. , 0.01790162, 0.03536172, 0.052...9835, 0.94587168, 0.96376293, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=187, 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([[-6.48584071e-02, -9.03816519e-02, -1.147...e-02, 6.58499837e-02, -3.62137962e-03]]), w = array([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. , 0.01790162, 0.03536172, 0.052...9835, 0.94587168, 0.96376293, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 187, 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>