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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:02:46

Orbital Elements for KAS1CA,CB
WDS: KAS1CA,CB WDS ID/Discoverer
P: 26.000 Orbital period (years)
a: 0.308 Semi-major axis (arcseconds)
i: 93.2 Inclination (degrees)
Ω: 18.9 Longitude of ascending node (degrees)
T: 2032.440 Epoch of periastron passage (year)
e: 0.16 Eccentricity
ω: 273.1 Longitude of periastron (degrees)
Start-Year: 2012.0 Year
End-Year: 2038.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KAS1CA,CB
Position: 043737.46-022928.4 Epoch-2000 right ascension and declination
WDS-ID: 04376-0228 WDS designation
Discoverer Code: KAS1CA,CB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.5 r Magnitude of the primary
V2: 13.0 r Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2020 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for KAS1CA,CB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:02:46 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 = [-0.09524469396680954, -0.08886016978484881, -0.07769392314601081, -0.06274577803907377, -0.04499390372755411, -0.025365613387909526, -0.00473205507741944, 0.016085005428326835, 0.036301208017139895, 0.05515637426694171, 0.07190257520486683, 0.08579577631354812, 0.096094081271287, 0.10206736100276968, 0.10302595241532013, 0.09837986121459863, 0.08774271945391326, 0.07109112924310587, 0.048968683779979545, 0.0226729575973949, ...], y_list = [0.28591787973210764, 0.27988929921955924, 0.25881313307371695, 0.2251511657618075, 0.1814402824831015, 0.1301745847697762, 0.07376423213976818, 0.014537223619590027, -0.045236700382464565, -0.10331238315435146, -0.15743371735690076, -0.20530296479427837, -0.24456337206454987, -0.2728084865694656, -0.2876404614752805, -0.28681242422737513, -0.26850285279233604, -0.23176838249592968, -0.17717190333998642, -0.10744116964830071, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.09524469396680954, -0.08886016978484881, -0.07769392314601081, -0.06274577803907377, -0.04499390372755411, -0.025365613387909526, -0.00473205507741944, 0.016085005428326835, 0.036301208017139895, 0.05515637426694171, 0.07190257520486683, 0.08579577631354812, 0.096094081271287, 0.10206736100276968, 0.10302595241532013, 0.09837986121459863, 0.08774271945391326, 0.07109112924310587, 0.048968683779979545, 0.0226729575973949, ...], y_list=[0.28591787973210764, 0.27988929921955924, 0.25881313307371695, 0.2251511657618075, 0.1814402824831015, 0.1301745847697762, 0.07376423213976818, 0.014537223619590027, -0.045236700382464565, -0.10331238315435146, -0.15743371735690076, -0.20530296479427837, -0.24456337206454987, -0.2728084865694656, -0.2876404614752805, -0.28681242422737513, -0.26850285279233604, -0.23176838249592968, -0.17717190333998642, -0.10744116964830071, ...])
    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([-0.00570368, 0.02267296, 0.04896868, 0...7, -0.07735232, -0.05810392, -0.03351816]), y = array([-0.02779544, -0.10744117, -0.1771719 , -0... , 0.19660525, 0.13159409, 0.05451727]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.00570368, 0.02267296, 0.04896868, 0...7, -0.07735232, -0.05810392, -0.03351816]), array([-0.02779544, -0.10744117, -0.1771719 , -0... , 0.19660525, 0.13159409, 0.05451727])], 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([-0.00570368, 0.02267296, 0.04896868, 0...7, -0.07735232, -0.05810392, -0.03351816]), array([-0.02779544, -0.10744117, -0.1771719 , -0... , 0.19660525, 0.13159409, 0.05451727])], 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([[-0.00570368, 0.02267296, 0.04896868, ... 0.19660525, 0.13159409, -0.02779544]]), 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. , 0.06926391, 0.13031464, 0.178...2109, 0.80700864, 0.86255162, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=33, 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([[-0.00570368, 0.02267296, 0.04896868, ... 0.19660525, 0.13159409, -0.02779544]]), 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. , 0.06926391, 0.13031464, 0.178...2109, 0.80700864, 0.86255162, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 33, 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>