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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:53:34

Orbital Elements for STF2267
WDS: STF2267 WDS ID/Discoverer
P: 1660.000 Orbital period (years)
a: 1.368 Semi-major axis (arcseconds)
i: 55.5 Inclination (degrees)
Ω: 37.3 Longitude of ascending node (degrees)
T: 2121.000 Epoch of periastron passage (year)
e: 0.69 Eccentricity
ω: 351.9 Longitude of periastron (degrees)
Start-Year: 1195.0 Year
End-Year: 2855.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2267
Position: 180141.17+401041.9 Epoch-2000 right ascension and declination
WDS-ID: 18017+4011 WDS designation
Discoverer Code: STF2267 Discover designation and components
ADS number: 11001 Aitken Double Star catalog
HD number: 164941 HD catalog number
Hipparcos number: 88284 Hipparcos catalog number
V1: 8.41 Magnitude of the primary
V2: 8.84 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 STF2267
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:53:34 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 = [1.1106198988519398, 1.1121356015312367, 1.1136479097776923, 1.115156820976155, 1.116662332504312, 1.1181644417326553, 1.1196631460244242, 1.1211584427355696, 1.1226503292147036, 1.1241388028030541, 1.1256238608344211, 1.1271055006351334, 1.1285837195239896, 1.1300585148122368, 1.1315298838035017, 1.1329978237937597, 1.134462332071284, 1.1359234059165966, 1.1373810426024307, 1.1388352393936807, ...], y_list = [-1.9542969942383168, -1.954349341053904, -1.9543957228518696, -1.9544361430017434, -1.954470604851183, -1.9544991117260255, -1.9545216669303505, -1.9545382737465298, -1.954548935435285, -1.9545536552357445, -1.9545524363654936, -1.9545452820206328, -1.9545321953758314, -1.9545131795843749, -1.9544882377782247, -1.9544573730680672, -1.9544205885433665, -1.9543778872724158, -1.954329272302388, -1.9542747466593862, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[1.1106198988519398, 1.1121356015312367, 1.1136479097776923, 1.115156820976155, 1.116662332504312, 1.1181644417326553, 1.1196631460244242, 1.1211584427355696, 1.1226503292147036, 1.1241388028030541, 1.1256238608344211, 1.1271055006351334, 1.1285837195239896, 1.1300585148122368, 1.1315298838035017, 1.1329978237937597, 1.134462332071284, 1.1359234059165966, 1.1373810426024307, 1.1388352393936807, ...], y_list=[-1.9542969942383168, -1.954349341053904, -1.9543957228518696, -1.9544361430017434, -1.954470604851183, -1.9544991117260255, -1.9545216669303505, -1.9545382737465298, -1.954548935435285, -1.9545536552357445, -1.9545524363654936, -1.9545452820206328, -1.9545321953758314, -1.9545131795843749, -1.9544882377782247, -1.9544573730680672, -1.9544205885433665, -1.9543778872724158, -1.954329272302388, -1.9542747466593862, ...])
    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([-0.39655334, -0.39639843, -0.39618089, ..., -0.39662708, -0.39666923, -0.39664412]), y = array([-0.00486933, -0.01219032, -0.0195094 , ..., 0.01709353, 0.00977382, 0.00245245]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.39655334, -0.39639843, -0.39618089, ..., -0.39662708, -0.39666923, -0.39664412]), array([-0.00486933, -0.01219032, -0.0195094 , ..., 0.01709353, 0.00977382, 0.00245245])], 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([-0.39655334, -0.39639843, -0.39618089, ..., -0.39662708, -0.39666923, -0.39664412]), array([-0.00486933, -0.01219032, -0.0195094 , ..., 0.01709353, 0.00977382, 0.00245245])], 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([[-0.39655334, -0.39639843, -0.39618089, .... 0.01709353, 0.00977382, -0.00486933]]), w=array([1., 1., 1., ..., 1., 1., 1.]), u=array([0. , 0.00115982, 0.0023196 , ..., 0.99652124, 0.99768062, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=1667, 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([[-0.39655334, -0.39639843, -0.39618089, .... 0.01709353, 0.00977382, -0.00486933]]), w = array([1., 1., 1., ..., 1., 1., 1.]), u = array([0. , 0.00115982, 0.0023196 , ..., 0.99652124, 0.99768062, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 1667, 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>