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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:13:14

Orbital Elements for B1722
WDS: B1722 WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.333 Semi-major axis (arcseconds)
i: 47.1 Inclination (degrees)
Ω: 32.7 Longitude of ascending node (degrees)
T: 2016.630 Epoch of periastron passage (year)
e: 0.906 Eccentricity
ω: 97.8 Longitude of periastron (degrees)
Start-Year: 1875.0 Year
End-Year: 2175.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B1722
Position: 124619.87-605019.5 Epoch-2000 right ascension and declination
WDS-ID: 12463-6050 WDS designation
Discoverer Code: B1722 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 110925 HD catalog number
Hipparcos number: 62324 Hipparcos catalog number
V1: 8.88 Magnitude of the primary
V2: 9.45 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2020 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for B1722
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:13:14 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 = [0.3050400522631387, 0.30391650228681333, 0.3027735525779751, 0.30161124300519493, 0.3004296116508496, 0.29922869453783674, 0.298008525810252, 0.296769137709225, 0.295510560584718, 0.29423282290634656, 0.29293595127323274, 0.2916199704229013, 0.2902849032392314, 0.28893077075946844, 0.2875575921803058, 0.28616538486304194, 0.28475416433781764, 0.28332394430694186, 0.281874736647303, 0.2804065514118727, ...], y_list = [0.3132180494645059, 0.31425809171427904, 0.31527807404779556, 0.31627789702123127, 0.3172574585219672, 0.31821665396721793, 0.31915537610511724, 0.3200735149918671, 0.32097095793448577, 0.32184758943145136, 0.3227032911111613, 0.3235379416681158, 0.32435141679673657, 0.3251435891227228, 0.32591432813184257, 0.32666350009605327, 0.3273909679968422, 0.32809659144565784, 0.32878022660132417, 0.3294417260842932, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.3050400522631387, 0.30391650228681333, 0.3027735525779751, 0.30161124300519493, 0.3004296116508496, 0.29922869453783674, 0.298008525810252, 0.296769137709225, 0.295510560584718, 0.29423282290634656, 0.29293595127323274, 0.2916199704229013, 0.2902849032392314, 0.28893077075946844, 0.2875575921803058, 0.28616538486304194, 0.28475416433781764, 0.28332394430694186, 0.281874736647303, 0.2804065514118727, ...], y_list=[0.3132180494645059, 0.31425809171427904, 0.31527807404779556, 0.31627789702123127, 0.3172574585219672, 0.31821665396721793, 0.31915537610511724, 0.3200735149918671, 0.32097095793448577, 0.32184758943145136, 0.3227032911111613, 0.3235379416681158, 0.32435141679673657, 0.3251435891227228, 0.32591432813184257, 0.32666350009605327, 0.3273909679968422, 0.32809659144565784, 0.32878022660132417, 0.3294417260842932, ...])
    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([-7.88304165e-03, 1.38907511e-02, 3.3273...74e-02, -3.41028934e-02, -2.56839215e-02]), y = array([-0.02345152, -0.03885112, -0.04598144, -0...7, 0.04816856, 0.02690284, 0.00151066]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-7.88304165e-03, 1.38907511e-02, 3.3273...74e-02, -3.41028934e-02, -2.56839215e-02]), array([-0.02345152, -0.03885112, -0.04598144, -0...7, 0.04816856, 0.02690284, 0.00151066])], 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([-7.88304165e-03, 1.38907511e-02, 3.3273...74e-02, -3.41028934e-02, -2.56839215e-02]), array([-0.02345152, -0.03885112, -0.04598144, -0...7, 0.04816856, 0.02690284, 0.00151066])], 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([[-7.88304165e-03, 1.38907511e-02, 3.327...e-02, 2.69028359e-02, -2.34515175e-02]]), 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. , 0.02269094, 0.04026308, 0.054...5226, 0.93347528, 0.95169683, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=307, 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([[-7.88304165e-03, 1.38907511e-02, 3.327...e-02, 2.69028359e-02, -2.34515175e-02]]), 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. , 0.02269094, 0.04026308, 0.054...5226, 0.93347528, 0.95169683, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 307, 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>