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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:41:43

Orbital Elements for STT495
WDS: STT495 WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.296 Semi-major axis (arcseconds)
i: 71.0 Inclination (degrees)
Ω: 138.6 Longitude of ascending node (degrees)
T: 1935.200 Epoch of periastron passage (year)
e: 0.98 Eccentricity
ω: 142.4 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 STT495
Position: 232407.91+573207.9 Epoch-2000 right ascension and declination
WDS-ID: 23241+5732 WDS designation
Discoverer Code: STT495 Discover designation and components
ADS number: 16731 Aitken Double Star catalog
HD number: 220562 HD catalog number
Hipparcos number: 115529 Hipparcos catalog number
V1: 7.49 Magnitude of the primary
V2: 7.76 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2005 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STT495
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:41:43 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 = [-0.3072002690157506, -0.3048713582075289, -0.30250174671585756, -0.3000907501337899, -0.2976376555021477, -0.29514171965194125, -0.2926021674168128, -0.2900181897027197, -0.2873889414005502, -0.2847135391256262, -0.28199105876605773, -0.279220532819629, -0.27640094749627925, -0.2735312395602144, -0.2706102928821929, -0.26763693466847677, -0.26460993132822613, -0.2615279839356228, -0.25838972323656945, -0.25519370414225145, ...], y_list = [-0.2358625866973839, -0.2344614833884248, -0.2330290789869458, -0.2315647937888313, -0.23006802342831845, -0.22853813740341508, -0.22697447748330568, -0.22537635598592398, -0.22374305391243152, -0.22207381892371497, -0.22036786314212553, -0.21862436075953373, -0.21684244543028805, -0.21502120742479652, -0.21315969051612507, -0.2112568885681479, -0.20931174178928286, -0.20732313261058097, -0.20528988114077312, -0.20321074014359336, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.3072002690157506, -0.3048713582075289, -0.30250174671585756, -0.3000907501337899, -0.2976376555021477, -0.29514171965194125, -0.2926021674168128, -0.2900181897027197, -0.2873889414005502, -0.2847135391256262, -0.28199105876605773, -0.279220532819629, -0.27640094749627925, -0.2735312395602144, -0.2706102928821929, -0.26763693466847677, -0.26460993132822613, -0.2615279839356228, -0.25838972323656945, -0.25519370414225145, ...], y_list=[-0.2358625866973839, -0.2344614833884248, -0.2330290789869458, -0.2315647937888313, -0.23006802342831845, -0.22853813740341508, -0.22697447748330568, -0.22537635598592398, -0.22374305391243152, -0.22207381892371497, -0.22036786314212553, -0.21862436075953373, -0.21684244543028805, -0.21502120742479652, -0.21315969051612507, -0.2112568885681479, -0.20931174178928286, -0.20732313261058097, -0.20528988114077312, -0.20321074014359336, ...])
    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([-0.03001384, -0.03994688, -0.04904586, -0...6, -0.00096355, -0.00581562, -0.01888835]), y = array([-0.00322559, -0.0082357 , -0.01307973, -0...8, -0.00547368, 0.00664457, 0.00189124]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.03001384, -0.03994688, -0.04904586, -0...6, -0.00096355, -0.00581562, -0.01888835]), array([-0.00322559, -0.0082357 , -0.01307973, -0...8, -0.00547368, 0.00664457, 0.00189124])], 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([-0.03001384, -0.03994688, -0.04904586, -0...6, -0.00096355, -0.00581562, -0.01888835]), array([-0.00322559, -0.0082357 , -0.01307973, -0...8, -0.00547368, 0.00664457, 0.00189124])], 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([[-0.03001384, -0.03994688, -0.04904586, -... -0.00547368, 0.00664457, -0.00322559]]), 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. , 0.01136359, 0.02189267, 0.031...601 , 0.95997246, 0.97330588, 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([[-0.03001384, -0.03994688, -0.04904586, -... -0.00547368, 0.00664457, -0.00322559]]), 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. , 0.01136359, 0.02189267, 0.031...601 , 0.95997246, 0.97330588, 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>