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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:28:46

Orbital Elements for STT157
WDS: STT157 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.781 Semi-major axis (arcseconds)
i: 129.4 Inclination (degrees)
Ω: 137.8 Longitude of ascending node (degrees)
T: 1958.300 Epoch of periastron passage (year)
e: 0.4 Eccentricity
ω: 238.4 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT157
Position: 064747.56+002024.5 Epoch-2000 right ascension and declination
WDS-ID: 06478+0020 WDS designation
Discoverer Code: STT157 Discover designation and components
ADS number: 5455 Aitken Double Star catalog
HD number: 49294 HD catalog number
Hipparcos number: 32572 Hipparcos catalog number
V1: 7.18 Magnitude of the primary
V2: 9.16 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT157
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:28:46 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 = [-0.5835695797051162, -0.5785583373558604, -0.5735078948435385, -0.5684183989269751, -0.5632899982700647, -0.5581228435142002, -0.5529170873526997, -0.5476728846073017, -0.5423903923067953, -0.5370697697678645, -0.5317111786782103, -0.5263147831820382, -0.5208807499679865, -0.515409248359576, -0.5099004504082696, -0.5043545309892344, -0.4987716678998914, -0.49315204196134743, -0.487495837122825, -0.4818032405691632, ...], y_list = [0.32612685045096956, 0.33096720694724435, 0.33578513835999513, 0.34058020381242743, 0.34535195818626985, 0.35009995202606065, 0.3548237314417502, 0.35952283800956775, 0.3641968086711128, 0.36884517563063035, 0.37346746625042476, 0.3780632029443681, 0.382631903069457, 0.3871730788153759, 0.39168623709201966, 0.39617087941491796, 0.4006265017885311, 0.4050525945873603, 0.40944864243481044, 0.413814124079784, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.5835695797051162, -0.5785583373558604, -0.5735078948435385, -0.5684183989269751, -0.5632899982700647, -0.5581228435142002, -0.5529170873526997, -0.5476728846073017, -0.5423903923067953, -0.5370697697678645, -0.5317111786782103, -0.5263147831820382, -0.5208807499679865, -0.515409248359576, -0.5099004504082696, -0.5043545309892344, -0.4987716678998914, -0.49315204196134743, -0.487495837122825, -0.4818032405691632, ...], y_list=[0.32612685045096956, 0.33096720694724435, 0.33578513835999513, 0.34058020381242743, 0.34535195818626985, 0.35009995202606065, 0.3548237314417502, 0.35952283800956775, 0.3641968086711128, 0.36884517563063035, 0.37346746625042476, 0.3780632029443681, 0.382631903069457, 0.3871730788153759, 0.39168623709201966, 0.39617087941491796, 0.4006265017885311, 0.4050525945873603, 0.40944864243481044, 0.413814124079784, ...])
    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([-0.81238649, -0.81467716, -0.81692092, -0...3, -0.80523424, -0.80766491, -0.81004904]), y = array([-0.00155337, -0.00704651, -0.01253924, -0...1, 0.01492531, 0.00943286, 0.00393985]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.81238649, -0.81467716, -0.81692092, -0...3, -0.80523424, -0.80766491, -0.81004904]), array([-0.00155337, -0.00704651, -0.01253924, -0...1, 0.01492531, 0.00943286, 0.00393985])], 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([-0.81238649, -0.81467716, -0.81692092, -0...3, -0.80523424, -0.80766491, -0.81004904]), array([-0.00155337, -0.00704651, -0.01253924, -0...1, 0.01492531, 0.00943286, 0.00393985])], 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([[-0.81238649, -0.81467716, -0.81692092, .... 0.01492531, 0.00943286, -0.00155337]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.00153851, 0.0030723 , 0.004...9888, 0.99535622, 0.99690886, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=507, 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([[-0.81238649, -0.81467716, -0.81692092, .... 0.01492531, 0.00943286, -0.00155337]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1..., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.00153851, 0.0030723 , 0.004...9888, 0.99535622, 0.99690886, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 507, 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>