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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:28:51

Orbital Elements for B1261
WDS: B1261 WDS ID/Discoverer
P: 200.000 Orbital period (years)
a: 0.471 Semi-major axis (arcseconds)
i: 78.6 Inclination (degrees)
Ω: 263.4 Longitude of ascending node (degrees)
T: 2024.270 Epoch of periastron passage (year)
e: 0.498 Eccentricity
ω: 69.0 Longitude of periastron (degrees)
Start-Year: 1925.0 Year
End-Year: 2125.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B1261
Position: 150505.43-430758.0 Epoch-2000 right ascension and declination
WDS-ID: 15051-4308 WDS designation
Discoverer Code: B1261 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 133262 HD catalog number
Hipparcos number: 73804 Hipparcos catalog number
V1: 8.95 Magnitude of the primary
V2: 11.09 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 B1261
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:28:51 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 = [-0.2603692626899089, -0.2524008860771385, -0.24435835388532026, -0.23624395890203104, -0.2280599890582653, -0.2198087298299825, -0.2114924666679391, -0.20311348687934874, -0.19467408368729175, -0.18617655687782994, -0.1776232163972504, -0.16901638475188857, -0.16035839969193802, -0.15165161696654292, -0.14289841315863183, -0.1341011886083568, -0.12526237043455166, -0.1163844156641548, -0.107469814480182, -0.09852109359951233, ...], y_list = [-0.10137438945594963, -0.10285968152108377, -0.1043147531546607, -0.105739146811386, -0.10713239942129789, -0.10849404192366739, -0.10982359879536159, -0.11112058766152932, -0.11238451856682329, -0.11361489377742394, -0.1148112071192168, -0.1159729435022579, -0.11709957839883556, -0.1181905773086278, -0.11924539520969227, -0.12026347599399725, -0.12124425188615376, -0.1221871428439683, -0.12309155593938227, -0.12395688471831087, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.2603692626899089, -0.2524008860771385, -0.24435835388532026, -0.23624395890203104, -0.2280599890582653, -0.2198087298299825, -0.2114924666679391, -0.20311348687934874, -0.19467408368729175, -0.18617655687782994, -0.1776232163972504, -0.16901638475188857, -0.16035839969193802, -0.15165161696654292, -0.14289841315863183, -0.1341011886083568, -0.12526237043455166, -0.1163844156641548, -0.107469814480182, -0.09852109359951233, ...], y_list=[-0.10137438945594963, -0.10285968152108377, -0.1043147531546607, -0.105739146811386, -0.10713239942129789, -0.10849404192366739, -0.10982359879536159, -0.11112058766152932, -0.11238451856682329, -0.11361489377742394, -0.1148112071192168, -0.1159729435022579, -0.11709957839883556, -0.1181905773086278, -0.11924539520969227, -0.12026347599399725, -0.12124425188615376, -0.1221871428439683, -0.12309155593938227, -0.12395688471831087, ...])
    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([-0.50330609, -0.50263661, -0.5017111 , -0...6, -0.50370426, -0.50384764, -0.50371229]), y = array([-0.00109203, -0.00346382, -0.00583386, -0...4, 0.00602164, 0.003652 , 0.00128033]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.50330609, -0.50263661, -0.5017111 , -0...6, -0.50370426, -0.50384764, -0.50371229]), array([-0.00109203, -0.00346382, -0.00583386, -0...4, 0.00602164, 0.003652 , 0.00128033])], 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([-0.50330609, -0.50263661, -0.5017111 , -0...6, -0.50370426, -0.50384764, -0.50371229]), array([-0.00109203, -0.00346382, -0.00583386, -0...4, 0.00602164, 0.003652 , 0.00128033])], 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([[-0.50330609, -0.50263661, -0.5017111 , -... 0.00602164, 0.003652 , -0.00109203]]), 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. , 0.00139587, 0.00283696, 0.004...8876, 0.99595095, 0.99729555, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=207, 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([[-0.50330609, -0.50263661, -0.5017111 , -... 0.00602164, 0.003652 , -0.00109203]]), 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. , 0.00139587, 0.00283696, 0.004...8876, 0.99595095, 0.99729555, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 207, 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>