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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:38:46

Orbital Elements for WRH37AB
WDS: WRH37AB WDS ID/Discoverer
P: 118.000 Orbital period (years)
a: 0.3038 Semi-major axis (arcseconds)
i: 107.4 Inclination (degrees)
Ω: 4.8 Longitude of ascending node (degrees)
T: 2010.880 Epoch of periastron passage (year)
e: 0.34 Eccentricity
ω: 146.0 Longitude of periastron (degrees)
Start-Year: 1966.0 Year
End-Year: 2084.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WRH37AB
Position: 230155.26+421933.5 Epoch-2000 right ascension and declination
WDS-ID: 23019+4220 WDS designation
Discoverer Code: WRH37AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 217675 HD catalog number
Hipparcos number: 113726 Hipparcos catalog number
V1: 3.73 Magnitude of the primary
V2: 6.03 Magnitude of the secondary
Equinox: 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 WRH37AB
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ValueError
Python 3.12.3: /usr/bin/python3
Fri Jul 11 19:38:46 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 = [-0.05397665127726606, -0.05034776304733064, -0.046650601051197366, -0.04288892069630576, -0.03906666051612435, -0.03518796376471365, -0.03125720213563641, -0.027279001853553298, -0.023258272413651346, -0.019200238272708673, -0.01511047382573192, -0.010994942033030567, -0.006860037093248836, -0.002712631586627587, 0.0014398714628622632, 0.005589481141397183, 0.009727555346611808, 0.013844731184424332, 0.017930848656201398, 0.021974867321571095, ...], y_list = [0.3807083301379284, 0.38071215896167454, 0.3801996073024488, 0.3791610953308428, 0.3775868594134248, 0.3754669546888228, 0.3727912610443686, 0.3695494931729115, 0.3657312155328727, 0.361325863206423, 0.35632276985649186, 0.35071120422986013, 0.3444804169486609, 0.33761969968535777, 0.33011845923703076, 0.3219663095153036, 0.3131531850611446, 0.30366948039235864, 0.2935062203086634, 0.28265526722553613, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.05397665127726606, -0.05034776304733064, -0.046650601051197366, -0.04288892069630576, -0.03906666051612435, -0.03518796376471365, -0.03125720213563641, -0.027279001853553298, -0.023258272413651346, -0.019200238272708673, -0.01511047382573192, -0.010994942033030567, -0.006860037093248836, -0.002712631586627587, 0.0014398714628622632, 0.005589481141397183, 0.009727555346611808, 0.013844731184424332, 0.017930848656201398, 0.021974867321571095, ...], y_list=[0.3807083301379284, 0.38071215896167454, 0.3801996073024488, 0.3791610953308428, 0.3775868594134248, 0.3754669546888228, 0.3727912610443686, 0.3695494931729115, 0.3657312155328727, 0.361325863206423, 0.35632276985649186, 0.35071120422986013, 0.3444804169486609, 0.33761969968535777, 0.33011845923703076, 0.3219663095153036, 0.3131531850611446, 0.30366948039235864, 0.2935062203086634, 0.28265526722553613, ...])
    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([-0.09785278, -0.09505122, -0.09202942, -0...1069308 , -0.10497279, -0.10280975, -0.10043771]), y = array([-1.35304859e-02, -2.72616845e-02, -4.0929....77248535e-02, 1.39920061e-02, 2.30901030e-04]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.09785278, -0.09505122, -0.09202942, -0...1069308 , -0.10497279, -0.10280975, -0.10043771]), array([-1.35304859e-02, -2.72616845e-02, -4.0929....77248535e-02, 1.39920061e-02, 2.30901030e-04])], 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([-0.09785278, -0.09505122, -0.09202942, -0...1069308 , -0.10497279, -0.10280975, -0.10043771]), array([-1.35304859e-02, -2.72616845e-02, -4.0929....77248535e-02, 1.39920061e-02, 2.30901030e-04])], 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([[-0.09785278, -0.09505122, -0.09202942, -...4140371, 0.02772485, 0.01399201, -0.01353049]]), 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. , 0.01075391, 0.02149534, 0.032... 0.95726874, 0.9678724 , 0.97854041, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=125, 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([[-0.09785278, -0.09505122, -0.09202942, -...4140371, 0.02772485, 0.01399201, -0.01353049]]), 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. , 0.01075391, 0.02149534, 0.032... 0.95726874, 0.9678724 , 0.97854041, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 125, 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>