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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:44:42

Orbital Elements for B177AB
WDS: B177AB WDS ID/Discoverer
P: 400.000 Orbital period (years)
a: 0.18 Semi-major axis (arcseconds)
i: 85.2 Inclination (degrees)
Ω: 197.0 Longitude of ascending node (degrees)
T: 2035.805 Epoch of periastron passage (year)
e: 0.7 Eccentricity
ω: 142.9 Longitude of periastron (degrees)
Start-Year: 1825.0 Year
End-Year: 2225.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B177AB
Position: 090813.85-282909.8 Epoch-2000 right ascension and declination
WDS-ID: 09082-2829 WDS designation
Discoverer Code: B177AB Discover designation and components
ADS number: 7205 Aitken Double Star catalog
HD number: 78590 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.3 Magnitude of the primary
V2: 9.6 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for B177AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:44:42 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 = [0.05334050124302827, 0.053654333962739074, 0.053965458340988766, 0.05427386134942953, 0.05457952983539554, 0.05488245051820246, 0.05518260998546276, 0.05547999468940771, 0.05577459094320893, 0.05606638491728991, 0.05635536263562105, 0.056641509971989, 0.05692481264623417, 0.057205256220449884, 0.0574828260951334, 0.057757507505287, 0.05802928551645828, 0.05829814502071678, 0.058564070732561035, 0.05882704718474881, ...], y_list = [-0.23006860762219675, -0.23085206914096704, -0.2316238777925944, -0.2323840061087117, -0.2331324260335561, -0.23386910891602988, -0.23459402550172975, -0.23530714592492089, -0.23600843970043442, -0.2366978757154642, -0.23737542222124475, -0.23804104682458754, -0.2386947164792601, -0.23933639747719235, -0.2399660554394861, -0.2405836553072258, -0.24118916133206486, -0.24178253706658273, -0.2423637453544011, -0.24293274832004527, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.05334050124302827, 0.053654333962739074, 0.053965458340988766, 0.05427386134942953, 0.05457952983539554, 0.05488245051820246, 0.05518260998546276, 0.05547999468940771, 0.05577459094320893, 0.05606638491728991, 0.05635536263562105, 0.056641509971989, 0.05692481264623417, 0.057205256220449884, 0.0574828260951334, 0.057757507505287, 0.05802928551645828, 0.05829814502071678, 0.058564070732561035, 0.05882704718474881, ...], y_list=[-0.23006860762219675, -0.23085206914096704, -0.2316238777925944, -0.2323840061087117, -0.2331324260335561, -0.23386910891602988, -0.23459402550172975, -0.23530714592492089, -0.23600843970043442, -0.2366978757154642, -0.23737542222124475, -0.23804104682458754, -0.2386947164792601, -0.23933639747719235, -0.2399660554394861, -0.2405836553072258, -0.24118916133206486, -0.24178253706658273, -0.2423637453544011, -0.24293274832004527, ...])
    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([-0.01327997, -0.01279115, -0.01229772, -0...8, -0.01471469, -0.01424217, -0.01376378]), y = array([-0.00129634, -0.00353863, -0.00577965, -0...3, 0.00542991, 0.00318883, 0.00094644]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.01327997, -0.01279115, -0.01229772, -0...8, -0.01471469, -0.01424217, -0.01376378]), array([-0.00129634, -0.00353863, -0.00577965, -0...3, 0.00542991, 0.00318883, 0.00094644])], 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([-0.01327997, -0.01279115, -0.01229772, -0...8, -0.01471469, -0.01424217, -0.01376378]), array([-0.00129634, -0.00353863, -0.00577965, -0...3, 0.00542991, 0.00318883, 0.00094644])], 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([[-0.01327997, -0.01279115, -0.01229772, -... 0.00542991, 0.00318883, -0.00129634]]), 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. , 0.00348306, 0.00696573, 0.010...9129, 0.9895619 , 0.99303797, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=407, 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([[-0.01327997, -0.01279115, -0.01229772, -... 0.00542991, 0.00318883, -0.00129634]]), 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. , 0.00348306, 0.00696573, 0.010...9129, 0.9895619 , 0.99303797, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 407, 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>