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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:41:28

Orbital Elements for A1750AB
WDS: A1750AB WDS ID/Discoverer
P: 250.000 Orbital period (years)
a: 0.205 Semi-major axis (arcseconds)
i: 79.7 Inclination (degrees)
Ω: 219.9 Longitude of ascending node (degrees)
T: 1987.400 Epoch of periastron passage (year)
e: 0.162 Eccentricity
ω: 127.3 Longitude of periastron (degrees)
Start-Year: 1900.0 Year
End-Year: 2150.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1750AB
Position: 084158.19-010854.1 Epoch-2000 right ascension and declination
WDS-ID: 08420-0109 WDS designation
Discoverer Code: A1750AB Discover designation and components
ADS number: 6936 Aitken Double Star catalog
HD number: 74113 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.2 Magnitude of the primary
V2: 9.2 Magnitude of the secondary
Equinox: Equinox
Date: 2021 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A1750AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:41:28 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 = [0.13638569106394036, 0.13724255179234823, 0.13803552538479857, 0.13876375442118336, 0.13942639054703157, 0.14002259508722484, 0.14055153970437465, 0.14101240710383217, 0.14140439178736022, 0.14172670085755082, 0.14197855487511943, 0.14215918877125433, 0.14226785281723703, 0.14230381365358066, 0.1422663553809592, 0.14215478071521265, 0.14196841220871587, 0.14170659354039075, 0.14136869087661444, 0.14095409430523786, ...], y_list = [-0.1761730146302243, -0.17591355347605267, -0.17557220441724256, -0.17514850530579418, -0.17464201523034997, -0.1740523154622689, -0.17337901045361498, -0.17262172888871266, -0.17178012479092503, -0.17085387868631, -0.1698426988257939, -0.16874632246748034, -0.16756451722067614, -0.16629708245316754, -0.1649438507632162, -0.1635046895176637, -0.16197950245743584, -0.1603682313716156, -0.1586708578411144, -0.15688740505280355, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.13638569106394036, 0.13724255179234823, 0.13803552538479857, 0.13876375442118336, 0.13942639054703157, 0.14002259508722484, 0.14055153970437465, 0.14101240710383217, 0.14140439178736022, 0.14172670085755082, 0.14197855487511943, 0.14215918877125433, 0.14226785281723703, 0.14230381365358066, 0.1422663553809592, 0.14215478071521265, 0.14196841220871587, 0.14170659354039075, 0.14136869087661444, 0.14095409430523786, ...], y_list=[-0.1761730146302243, -0.17591355347605267, -0.17557220441724256, -0.17514850530579418, -0.17464201523034997, -0.1740523154622689, -0.17337901045361498, -0.17262172888871266, -0.17178012479092503, -0.17085387868631, -0.1698426988257939, -0.16874632246748034, -0.16756451722067614, -0.16629708245316754, -0.1649438507632162, -0.1635046895176637, -0.16197950245743584, -0.1603682313716156, -0.1586708578411144, -0.15688740505280355, ...])
    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([-0.05058618, -0.04785829, -0.04510782, -0...7, -0.05861946, -0.05596826, -0.05329 ]), y = array([-0.0017043 , -0.00529606, -0.00888531, -0...9, 0.00906891, 0.00547991, 0.00188826]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.05058618, -0.04785829, -0.04510782, -0...7, -0.05861946, -0.05596826, -0.05329 ]), array([-0.0017043 , -0.00529606, -0.00888531, -0...9, 0.00906891, 0.00547991, 0.00188826])], 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([-0.05058618, -0.04785829, -0.04510782, -0...7, -0.05861946, -0.05596826, -0.05329 ]), array([-0.0017043 , -0.00529606, -0.00888531, -0...9, 0.00906891, 0.00547991, 0.00188826])], 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([[-0.05058618, -0.04785829, -0.04510782, -... 0.00906891, 0.00547991, -0.0017043 ]]), 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. , 0.00532145, 0.01065672, 0.016...0376, 0.98414418, 0.98940879, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=257, 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([[-0.05058618, -0.04785829, -0.04510782, -... 0.00906891, 0.00547991, -0.0017043 ]]), 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. , 0.00532145, 0.01065672, 0.016...0376, 0.98414418, 0.98940879, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 257, 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>