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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:22:38

Orbital Elements for STF1816
WDS: STF1816 WDS ID/Discoverer
P: 1340.000 Orbital period (years)
a: 1.642 Semi-major axis (arcseconds)
i: 81.7 Inclination (degrees)
Ω: 80.2 Longitude of ascending node (degrees)
T: 2079.000 Epoch of periastron passage (year)
e: 0.54 Eccentricity
ω: 125.3 Longitude of periastron (degrees)
Start-Year: 1355.0 Year
End-Year: 2695.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1816
Position: 141354.63+290619.5 Epoch-2000 right ascension and declination
WDS-ID: 14139+2906 WDS designation
Discoverer Code: STF1816 Discover designation and components
ADS number: 9174 Aitken Double Star catalog
HD number: 124587 HD catalog number
Hipparcos number: 69523 Hipparcos catalog number
V1: 7.43 Magnitude of the primary
V2: 7.75 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2011 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STF1816
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:22:38 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 = [-1.191559840116042, -1.1954220779779918, -1.1992770199773508, -1.2031246463565513, -1.206964937352064, -1.210797873193893, -1.2146234341050854, -1.218441600301215, -1.2222523519898907, -1.2260556693702664, -1.229851532632532, -1.2336399226478454, -1.2374208181003035, -1.2411941999607718, -1.244960048377017, -1.2487183434855273, -1.2524690654110215, -1.2562121942659379, -1.2599477101499428, -1.2636755931494255, ...], y_list = [0.5246679167652688, 0.5250794584927129, 0.5254877955709688, 0.5258929271597149, 0.5262948524080439, 0.5266935704544348, 0.5270890804267241, 0.5274813814420756, 0.5278704726069506, 0.528256353017081, 0.5286390217574375, 0.5290184779711316, 0.5293947205727169, 0.5297677486961283, 0.5301375613828142, 0.5305041576633349, 0.5308675365573318, 0.5312276970734958, 0.5315846382095374, 0.5319383589521541, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-1.191559840116042, -1.1954220779779918, -1.1992770199773508, -1.2031246463565513, -1.206964937352064, -1.210797873193893, -1.2146234341050854, -1.218441600301215, -1.2222523519898907, -1.2260556693702664, -1.229851532632532, -1.2336399226478454, -1.2374208181003035, -1.2411941999607718, -1.244960048377017, -1.2487183434855273, -1.2524690654110215, -1.2562121942659379, -1.2599477101499428, -1.2636755931494255, ...], y_list=[0.5246679167652688, 0.5250794584927129, 0.5254877955709688, 0.5258929271597149, 0.5262948524080439, 0.5266935704544348, 0.5270890804267241, 0.5274813814420756, 0.5278704726069506, 0.528256353017081, 0.5286390217574375, 0.5290184779711316, 0.5293947205727169, 0.5297677486961283, 0.5301375613828142, 0.5305041576633349, 0.5308675365573318, 0.5312276970734958, 0.5315846382095374, 0.5319383589521541, ...])
    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([-0.65920523, -0.64832644, -0.63738724, ..., -0.69147776, -0.68078102, -0.67002348]), y = array([-0.00126453, -0.00357373, -0.0058826 , ..., 0.00566294, 0.00335401, 0.00104479]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.65920523, -0.64832644, -0.63738724, ..., -0.69147776, -0.68078102, -0.67002348]), array([-0.00126453, -0.00357373, -0.0058826 , ..., 0.00566294, 0.00335401, 0.00104479])], 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([-0.65920523, -0.64832644, -0.63738724, ..., -0.69147776, -0.68078102, -0.67002348]), array([-0.00126453, -0.00357373, -0.0058826 , ..., 0.00566294, 0.00335401, 0.00104479])], 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([[-0.65920523, -0.64832644, -0.63738724, .... 0.00566294, 0.00335401, -0.00126453]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0. , 0.00182766, 0.00366503, ..., 0.99457549, 0.99637389, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1347, 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([[-0.65920523, -0.64832644, -0.63738724, .... 0.00566294, 0.00335401, -0.00126453]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0. , 0.00182766, 0.00366503, ..., 0.99457549, 0.99637389, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1347, 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>