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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:19:50

Orbital Elements for STT270AB
WDS: STT270AB WDS ID/Discoverer
P: 964.000 Orbital period (years)
a: 7.6 Semi-major axis (arcseconds)
i: 37.0 Inclination (degrees)
Ω: 171.9 Longitude of ascending node (degrees)
T: 2030.000 Epoch of periastron passage (year)
e: 0.836 Eccentricity
ω: 334.2 Longitude of periastron (degrees)
Start-Year: 1543.0 Year
End-Year: 2507.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT270AB
Position: 134715.74+172724.8 Epoch-2000 right ascension and declination
WDS-ID: 13473+1727 WDS designation
Discoverer Code: STT270AB Discover designation and components
ADS number: 9025 Aitken Double Star catalog
HD number: 120136 HD catalog number
Hipparcos number: 67275 Hipparcos catalog number
V1: 4.5 Magnitude of the primary
V2: 11.1 Magnitude of the secondary
Equinox: Equinox
Date: 2012 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT270AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:19:50 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 = [6.619446840770929, 6.610019581165077, 6.600546943012768, 6.591028994075329, 6.581465801638109, 6.5718574325136085, 6.562203953044319, 6.55250542910585, 6.542761926109773, 6.53297350900659, 6.5231402422886156, 6.5132621899928855, 6.503339415703905, 6.493371982556598, 6.483359953239008, 6.47330338999514, 6.46320235462766, 6.453056908500682, 6.442867112542416, 6.432633027247883, ...], y_list = [11.713563802377317, 11.721805447413766, 11.729966620906433, 11.73804727167999, 11.746047347731023, 11.753966796225681, 11.761805563497411, 11.76956359504447, 11.777240835527529, 11.784837228767177, 11.792352717741371, 11.799787244582822, 11.807140750576433, 11.814413176156512, 11.82160446090412, 11.828714543544235, 11.835743361942939, 11.84269085310451, 11.849556953168527, 11.856341597406855, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[6.619446840770929, 6.610019581165077, 6.600546943012768, 6.591028994075329, 6.581465801638109, 6.5718574325136085, 6.562203953044319, 6.55250542910585, 6.542761926109773, 6.53297350900659, 6.5231402422886156, 6.5132621899928855, 6.503339415703905, 6.493371982556598, 6.483359953239008, 6.47330338999514, 6.46320235462766, 6.453056908500682, 6.442867112542416, 6.432633027247883, ...], y_list=[11.713563802377317, 11.721805447413766, 11.729966620906433, 11.73804727167999, 11.746047347731023, 11.753966796225681, 11.761805563497411, 11.76956359504447, 11.777240835527529, 11.784837228767177, 11.792352717741371, 11.799787244582822, 11.807140750576433, 11.814413176156512, 11.82160446090412, 11.828714543544235, 11.835743361942939, 11.84269085310451, 11.849556953168527, 11.856341597406855, ...])
    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([-1.22272062e+00, -1.16896006e+00, -1.1082...50e+00, -1.31138079e+00, -1.27002527e+00]), y = array([-1.24077356e-01, -2.53426294e-01, -3.8125...31e-01, 1.35943383e-01, 5.94079353e-03]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.22272062e+00, -1.16896006e+00, -1.1082...50e+00, -1.31138079e+00, -1.27002527e+00]), array([-1.24077356e-01, -2.53426294e-01, -3.8125...31e-01, 1.35943383e-01, 5.94079353e-03])], 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([-1.22272062e+00, -1.16896006e+00, -1.1082...50e+00, -1.31138079e+00, -1.27002527e+00]), array([-1.24077356e-01, -2.53426294e-01, -3.8125...31e-01, 1.35943383e-01, 5.94079353e-03])], 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([[-1.22272062, -1.16896006, -1.1082661 , .... 0.26539243, 0.13594338, -0.12407736]]), 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. , 0.00399398, 0.00802875, 0.012... 0.98456827, 0.98833654, 0.99216692, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=971, 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([[-1.22272062, -1.16896006, -1.1082661 , .... 0.26539243, 0.13594338, -0.12407736]]), 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. , 0.00399398, 0.00802875, 0.012... 0.98456827, 0.98833654, 0.99216692, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 971, 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>