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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:05:09

Orbital Elements for KOI3158A,BC
WDS: KOI3158A,BC WDS ID/Discoverer
P: 198.000 Orbital period (years)
a: 1.028 Semi-major axis (arcseconds)
i: 90.4 Inclination (degrees)
Ω: 73.1 Longitude of ascending node (degrees)
T: 2101.181 Epoch of periastron passage (year)
e: 0.864 Eccentricity
ω: 342.8 Longitude of periastron (degrees)
Start-Year: 1926.0 Year
End-Year: 2124.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KOI3158A,BC
Position: 191900.54+413804.5 Epoch-2000 right ascension and declination
WDS-ID: 19190+4138 WDS designation
Discoverer Code: KOI3158A,BC Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 94931 Hipparcos catalog number
V1: 14.03r Magnitude of the primary
V2: 16.90r 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: n Flags

Double Star Orbit for KOI3158A,BC
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:05:09 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 = [0.6831176477362647, 0.7122660545908047, 0.7407794670345043, 0.7686794719548055, 0.7959861257262147, 0.8227180929313217, 0.8488927707397155, 0.8745264003193246, 0.8996341666230571, 0.9242302878098745, 0.9483280954522312, 0.9719401065677998, 0.9950780884012749, 1.0177531167769793, 1.03997562874678, 1.0617554701714444, 1.0831019387967373, 1.1040238233177495, 1.1245294388653961, 1.1446266592969323, ...], y_list = [-0.20198539572458674, -0.21077657655612472, -0.21937984920488138, -0.2278014644454336, -0.2360472388758869, -0.2441225929356984, -0.25203258524631367, -0.2597819435607907, -0.2673750926278325, -0.2748161792720169, -0.2821090949760983, -0.2892574962294403, -0.29626482288253414, -0.3031343147234429, -0.3098690264689269, -0.3164718413416627, -0.32294548338552986, -0.3292925286534923, -0.3355154153870545, -0.341616453292525, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.6831176477362647, 0.7122660545908047, 0.7407794670345043, 0.7686794719548055, 0.7959861257262147, 0.8227180929313217, 0.8488927707397155, 0.8745264003193246, 0.8996341666230571, 0.9242302878098745, 0.9483280954522312, 0.9719401065677998, 0.9950780884012749, 1.0177531167769793, 1.03997562874678, 1.0617554701714444, 1.0831019387967373, 1.1040238233177495, 1.1245294388653961, 1.1446266592969323, ...], y_list=[-0.20198539572458674, -0.21077657655612472, -0.21937984920488138, -0.2278014644454336, -0.2360472388758869, -0.2441225929356984, -0.25203258524631367, -0.2597819435607907, -0.2673750926278325, -0.2748161792720169, -0.2821090949760983, -0.2892574962294403, -0.29626482288253414, -0.3031343147234429, -0.3098690264689269, -0.3164718413416627, -0.32294548338552986, -0.3292925286534923, -0.3355154153870545, -0.341616453292525, ...])
    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([ 0.01683196, 0.09272042, 0.16397164, 0...11666132, -0.13859547, -0.12091954, -0.05983902]), y = array([-0.00671073, -0.03004895, -0.05187723, -0...03660103, 0.04250646, 0.03628669, 0.01703328]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([ 0.01683196, 0.09272042, 0.16397164, 0...11666132, -0.13859547, -0.12091954, -0.05983902]), array([-0.00671073, -0.03004895, -0.05187723, -0...03660103, 0.04250646, 0.03628669, 0.01703328])], 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([ 0.01683196, 0.09272042, 0.16397164, 0...11666132, -0.13859547, -0.12091954, -0.05983902]), array([-0.00671073, -0.03004895, -0.05187723, -0...03660103, 0.04250646, 0.03628669, 0.01703328])], 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([[ 1.68319603e-02, 9.27204242e-02, 1.639...e-02, 3.62866880e-02, -6.71073104e-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., 1.]), u=array([0. , 0.01997506, 0.03872334, 0.056... 0.95326517, 0.95898004, 0.96369437, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=205, 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([[ 1.68319603e-02, 9.27204242e-02, 1.639...e-02, 3.62866880e-02, -6.71073104e-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., 1.]), u = array([0. , 0.01997506, 0.03872334, 0.056... 0.95326517, 0.95898004, 0.96369437, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 205, 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>