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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:42:39

Orbital Elements for BU1068AB
WDS: BU1068AB WDS ID/Discoverer
P: 416.000 Orbital period (years)
a: 0.448 Semi-major axis (arcseconds)
i: 128.1 Inclination (degrees)
Ω: 151.7 Longitude of ascending node (degrees)
T: 1964.400 Epoch of periastron passage (year)
e: 0.608 Eccentricity
ω: 82.1 Longitude of periastron (degrees)
Start-Year: 1817.0 Year
End-Year: 2233.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1068AB
Position: 084929.13+085152.8 Epoch-2000 right ascension and declination
WDS-ID: 08495+0852 WDS designation
Discoverer Code: BU1068AB Discover designation and components
ADS number: 7021 Aitken Double Star catalog
HD number: 75300 HD catalog number
Hipparcos number: 43317 Hipparcos catalog number
V1: 8.07 Magnitude of the primary
V2: 9.35 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for BU1068AB
--> -->
 
 
ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:42:39 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 = [0.31305402277985184, 0.3103814336971945, 0.30768806248997355, 0.30497394789645516, 0.3022391288181625, 0.2994836443562522, 0.29670753384924436, 0.2939108369121748, 0.2910935932526573, 0.28825584355663836, 0.2853976283370537, 0.2825189887353037, 0.27961996638881154, 0.27670060348040243, 0.2737609427897394, 0.27080102774690906, 0.2678209024882839, 0.2648206119147782, 0.2618002017526321, 0.2587597186168598, ...], y_list = [-0.28734525056269333, -0.2896358160000298, -0.29190698800505716, -0.2941584801552315, -0.2963900016809719, -0.2986012573428538, -0.30079194730514935, -0.3029617670055762, -0.3051104071909164, -0.30723755313726503, -0.30934288542042215, -0.3114260791893419, -0.3134868041528957, -0.3155247244234609, -0.31753949835549444, -0.31953077837890387, -0.32149821082699265, -0.3234414357587578, -0.32536008677530426, -0.32725379083012834, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[0.31305402277985184, 0.3103814336971945, 0.30768806248997355, 0.30497394789645516, 0.3022391288181625, 0.2994836443562522, 0.29670753384924436, 0.2939108369121748, 0.2910935932526573, 0.28825584355663836, 0.2853976283370537, 0.2825189887353037, 0.27961996638881154, 0.27670060348040243, 0.2737609427897394, 0.27080102774690906, 0.2678209024882839, 0.2648206119147782, 0.2618002017526321, 0.2587597186168598, ...], y_list=[-0.28734525056269333, -0.2896358160000298, -0.29190698800505716, -0.2941584801552315, -0.2963900016809719, -0.2986012573428538, -0.30079194730514935, -0.3029617670055762, -0.3051104071909164, -0.30723755313726503, -0.30934288542042215, -0.3114260791893419, -0.3134868041528957, -0.3155247244234609, -0.31753949835549444, -0.31953077837890387, -0.32149821082699265, -0.3234414357587578, -0.32536008677530426, -0.32725379083012834, ...])
    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([-0.11774013, -0.1219208 , -0.12565792, -0... , -0.10262877, -0.10808008, -0.11312267]), y = array([-0.0005877 , -0.01321373, -0.02579184, -0...1, 0.03711273, 0.02462312, 0.01204037]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.11774013, -0.1219208 , -0.12565792, -0... , -0.10262877, -0.10808008, -0.11312267]), array([-0.0005877 , -0.01321373, -0.02579184, -0...1, 0.03711273, 0.02462312, 0.01204037])], 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([-0.11774013, -0.1219208 , -0.12565792, -0... , -0.10262877, -0.10808008, -0.11312267]), array([-0.0005877 , -0.01321373, -0.02579184, -0...1, 0.03711273, 0.02462312, 0.01204037])], 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([[-0.11774013, -0.1219208 , -0.12565792, -... 0.03711273, 0.02462312, -0.0005877 ]]), 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. , 0.00666057, 0.01323169, 0.019...1425, 0.97965516, 0.98647962, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=423, 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([[-0.11774013, -0.1219208 , -0.12565792, -... 0.03711273, 0.02462312, -0.0005877 ]]), 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. , 0.00666057, 0.01323169, 0.019...1425, 0.97965516, 0.98647962, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 423, 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>