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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:37:28

Orbital Elements for STT187
WDS: STT187 WDS ID/Discoverer
P: 254.000 Orbital period (years)
a: 0.3268 Semi-major axis (arcseconds)
i: 144.6 Inclination (degrees)
Ω: 225.0 Longitude of ascending node (degrees)
T: 1934.200 Epoch of periastron passage (year)
e: 0.695 Eccentricity
ω: 88.8 Longitude of periastron (degrees)
Start-Year: 1898.0 Year
End-Year: 2152.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT187
Position: 080408.38+330150.8 Epoch-2000 right ascension and declination
WDS-ID: 08041+3302 WDS designation
Discoverer Code: STT187 Discover designation and components
ADS number: 6549 Aitken Double Star catalog
HD number: 66299 HD catalog number
Hipparcos number: 39480 Hipparcos catalog number
V1: 6.94 Magnitude of the primary
V2: 8.50 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT187
--> -->
 
 
ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:37:28 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 = [0.3000240190168047, 0.29553833325394935, 0.2908698449944365, 0.2860116755323207, 0.2809564967746503, 0.2756964925101577, 0.2702233158775737, 0.2645280427100022, 0.25860112044639194, 0.25243231234228003, 0.24601063679431612, 0.23932430173853203, 0.23236063432339335, 0.22510600644394552, 0.21754575732517112, 0.20966411526908102, 0.2014441220928654, 0.19286756592682228, 0.18391493127403175, 0.17456538010235953, ...], y_list = [-0.02522475560484412, -0.030007871885890804, -0.034772399011285364, -0.03951421933215965, -0.04422878699918365, -0.048911071888987766, -0.05355549466590935, -0.058155851331202914, -0.06270522526232525, -0.0671958843134073, -0.07161916001423053, -0.07596530524360526, -0.0802233259329395, -0.08438078133921317, -0.08842354616903082, -0.0923355262866001, -0.09609831784588041, -0.09969079740529348, -0.10308862789300716, -0.10626366223788938, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.3000240190168047, 0.29553833325394935, 0.2908698449944365, 0.2860116755323207, 0.2809564967746503, 0.2756964925101577, 0.2702233158775737, 0.2645280427100022, 0.25860112044639194, 0.25243231234228003, 0.24601063679431612, 0.23932430173853203, 0.23236063432339335, 0.22510600644394552, 0.21754575732517112, 0.20966411526908102, 0.2014441220928654, 0.19286756592682228, 0.18391493127403175, 0.17456538010235953, ...], y_list=[-0.02522475560484412, -0.030007871885890804, -0.034772399011285364, -0.03951421933215965, -0.04422878699918365, -0.048911071888987766, -0.05355549466590935, -0.058155851331202914, -0.06270522526232525, -0.0671958843134073, -0.07161916001423053, -0.07596530524360526, -0.0802233259329395, -0.08438078133921317, -0.08842354616903082, -0.0923355262866001, -0.09609831784588041, -0.09969079740529348, -0.10308862789300716, -0.10626366223788938, ...])
    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([-0.09749906, -0.0887702 , -0.07842522, -0...1179121 , -0.11471596, -0.11034766, -0.10465571]), y = array([-0.00242337, -0.0180415 , -0.03332541, -0...05856335, 0.04386509, 0.02872237, 0.01323956]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.09749906, -0.0887702 , -0.07842522, -0...1179121 , -0.11471596, -0.11034766, -0.10465571]), array([-0.00242337, -0.0180415 , -0.03332541, -0...05856335, 0.04386509, 0.02872237, 0.01323956])], 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([-0.09749906, -0.0887702 , -0.07842522, -0...1179121 , -0.11471596, -0.11034766, -0.10465571]), array([-0.00242337, -0.0180415 , -0.03332541, -0...05856335, 0.04386509, 0.02872237, 0.01323956])], 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([[-0.09749906, -0.0887702 , -0.07842522, -...5856335, 0.04386509, 0.02872237, -0.00242337]]), 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. , 0.01134913, 0.02305596, 0.035... 0.95909043, 0.96863167, 0.97862865, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=261, 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([[-0.09749906, -0.0887702 , -0.07842522, -...5856335, 0.04386509, 0.02872237, -0.00242337]]), 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. , 0.01134913, 0.02305596, 0.035... 0.95909043, 0.96863167, 0.97862865, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 261, 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>