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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:30:41

Orbital Elements for RST2955AB
WDS: RST2955AB WDS ID/Discoverer
P: 510.000 Orbital period (years)
a: 0.427 Semi-major axis (arcseconds)
i: 84.7 Inclination (degrees)
Ω: 226.0 Longitude of ascending node (degrees)
T: 1998.100 Epoch of periastron passage (year)
e: 0.645 Eccentricity
ω: 60.2 Longitude of periastron (degrees)
Start-Year: 1770.0 Year
End-Year: 2280.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST2955AB
Position: 152506.45-381009.0 Epoch-2000 right ascension and declination
WDS-ID: 15251-3810 WDS designation
Discoverer Code: RST2955AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.10 Magnitude of the primary
V2: 7.63 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for RST2955AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:30:41 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 = [-0.24785462858576213, -0.24615357373011607, -0.24444390592472812, -0.24272566873603013, -0.24099890564215568, -0.2392636600411012, -0.23751997525894875, -0.23576789455815367, -0.2340074611459003, -0.23223871818253214, -0.23046170879006014, -0.22867647606075336, -0.22688306306581868, -0.22508151286417205, -0.22327186851130773, -0.22145417306827353, -0.2196284696107497, -0.21779480123824688, -0.21595321108341953, -0.2141037423215068, ...], y_list = [0.157869947923677, 0.1561467383012404, 0.15441806508847333, 0.15268397850369425, 0.15094452879736678, 0.14919976626142473, 0.14744974123868423, 0.14569450413234625, 0.14393410541559348, 0.14216859564128873, 0.14039802545177868, 0.13862244558880724, 0.13684190690354764, 0.1350564603667538, 0.13326615707903983, 0.13147104828129583, 0.12967118536523758, 0.1278666198841075, 0.1260574035635221, 0.12424358831248049, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.24785462858576213, -0.24615357373011607, -0.24444390592472812, -0.24272566873603013, -0.24099890564215568, -0.2392636600411012, -0.23751997525894875, -0.23576789455815367, -0.2340074611459003, -0.23223871818253214, -0.23046170879006014, -0.22867647606075336, -0.22688306306581868, -0.22508151286417205, -0.22327186851130773, -0.22145417306827353, -0.2196284696107497, -0.21779480123824688, -0.21595321108341953, -0.2141037423215068, ...], y_list=[0.157869947923677, 0.1561467383012404, 0.15441806508847333, 0.15268397850369425, 0.15094452879736678, 0.14919976626142473, 0.14744974123868423, 0.14569450413234625, 0.14393410541559348, 0.14216859564128873, 0.14039802545177868, 0.13862244558880724, 0.13684190690354764, 0.1350564603667538, 0.13326615707903983, 0.13147104828129583, 0.12967118536523758, 0.1278666198841075, 0.1260574035635221, 0.12424358831248049, ...])
    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([-0.07922461, -0.07696362, -0.07469845, -0...4, -0.08598181, -0.08373379, -0.08148137]), y = array([-0.00072707, -0.00270771, -0.00468821, -0...5, 0.00521467, 0.00323423, 0.00125361]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.07922461, -0.07696362, -0.07469845, -0...4, -0.08598181, -0.08373379, -0.08148137]), array([-0.00072707, -0.00270771, -0.00468821, -0...5, 0.00521467, 0.00323423, 0.00125361])], 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([-0.07922461, -0.07696362, -0.07469845, -0...4, -0.08598181, -0.08373379, -0.08148137]), array([-0.00072707, -0.00270771, -0.00468821, -0...5, 0.00521467, 0.00323423, 0.00125361])], 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([[-0.07922461, -0.07696362, -0.07469845, .... 0.00521467, 0.00323423, -0.00072707]]), 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. , 0.00208811, 0.00417833, 0.006...7045, 0.99374923, 0.99583047, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=517, 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([[-0.07922461, -0.07696362, -0.07469845, .... 0.00521467, 0.00323423, -0.00072707]]), 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. , 0.00208811, 0.00417833, 0.006...7045, 0.99374923, 0.99583047, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 517, 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>