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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:39:34

Orbital Elements for STF3105
WDS: STF3105 WDS ID/Discoverer
P: 540.000 Orbital period (years)
a: 0.635 Semi-major axis (arcseconds)
i: 127.0 Inclination (degrees)
Ω: 17.0 Longitude of ascending node (degrees)
T: 1955.000 Epoch of periastron passage (year)
e: 0.65 Eccentricity
ω: 87.0 Longitude of periastron (degrees)
Start-Year: 1755.0 Year
End-Year: 2295.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF3105
Position: 163147.95-070123.9 Epoch-2000 right ascension and declination
WDS-ID: 16318-0701 WDS designation
Discoverer Code: STF3105 Discover designation and components
ADS number: 10092 Aitken Double Star catalog
HD number: 148931 HD catalog number
Hipparcos number: 80954 Hipparcos catalog number
V1: 7.68 Magnitude of the primary
V2: 9.25 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for STF3105


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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:39:34 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>
    956 
    957 # Smooth curve if necessary
=>  958 xa_smooth, ya_smooth = Q_get_smoothed_orbit(xa_list, ya_list)
    959 plt.plot(xa_smooth, ya_smooth, label=f'Orbit of {wds}', color='#528B8B')
    960 
xa_smooth undefined, ya_smooth undefined, Q_get_smoothed_orbit = <function Q_get_smoothed_orbit>, xa_list = [0.6171074428356627, 0.6168400887935038, 0.616551052560572, 0.6162402457142141, 0.6159075786344572, 0.6155529604861204, 0.6151762992005563, 0.614777501457008, 0.6143564726635748, 0.613913116937775, 0.6134473370866982, 0.6129590345867361, 0.6124481095628787, 0.6119144607675708, 0.6113579855591108, 0.6107785798232315, 0.6101761381627127, 0.6095505535731798, 0.6089017176103155, 0.6082295203203414, ...], ya_list = [-0.000670677736591343, -0.004147423714361965, -0.007624023815747027, -0.01110035461559595, -0.014576291549324539, -0.018051708881764206, -0.021526479675316124, -0.025000475757408838, -0.02847356768721252, -0.03194562472161152, -0.035416514780388625, -0.0388861044106063, -0.04235425875015544, -0.04582084149044599, -0.0492857148382056, -0.052748739806544896, -0.05620977491632122, -0.05966867796042102, -0.06312530480770039, -0.06657950963717013, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.6171074428356627, 0.6168400887935038, 0.616551052560572, 0.6162402457142141, 0.6159075786344572, 0.6155529604861204, 0.6151762992005563, 0.614777501457008, 0.6143564726635748, 0.613913116937775, 0.6134473370866982, 0.6129590345867361, 0.6124481095628787, 0.6119144607675708, 0.6113579855591108, 0.6107785798232315, 0.6101761381627127, 0.6095505535731798, 0.6089017176103155, 0.6082295203203414, ...], y_list=[-0.000670677736591343, -0.004147423714361965, -0.007624023815747027, -0.01110035461559595, -0.014576291549324539, -0.018051708881764206, -0.021526479675316124, -0.025000475757408838, -0.02847356768721252, -0.03194562472161152, -0.035416514780388625, -0.0388861044106063, -0.04235425875015544, -0.04582084149044599, -0.0492857148382056, -0.052748739806544896, -0.05620977491632122, -0.05966867796042102, -0.06312530480770039, -0.06657950963717013, ...])
    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([-1.38007006e-01, -1.33862693e-01, -1.2930...69e-01, -1.45022170e-01, -1.41727648e-01]), y = array([-0.00416317, -0.01957801, -0.03493174, -0... , 0.0419749 , 0.02665868, 0.0112646 ]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-1.38007006e-01, -1.33862693e-01, -1.2930...69e-01, -1.45022170e-01, -1.41727648e-01]), array([-0.00416317, -0.01957801, -0.03493174, -0... , 0.0419749 , 0.02665868, 0.0112646 ])], 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([-1.38007006e-01, -1.33862693e-01, -1.2930...69e-01, -1.45022170e-01, -1.41727648e-01]), array([-0.00416317, -0.01957801, -0.03493174, -0... , 0.0419749 , 0.02665868, 0.0112646 ])], 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([[-0.13800701, -0.13386269, -0.12930117, .... 0.0419749 , 0.02665868, -0.00416317]]), 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. , 0.00585446, 0.011729 , 0.017...4523, 0.98269111, 0.98840638, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=547, 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([[-0.13800701, -0.13386269, -0.12930117, .... 0.0419749 , 0.02665868, -0.00416317]]), 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. , 0.00585446, 0.011729 , 0.017...4523, 0.98269111, 0.98840638, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 547, 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>