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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 17:14:20

Orbital Elements for HDS719AB
WDS: HDS719AB WDS ID/Discoverer
P: 80.000 Orbital period (years)
a: 0.156 Semi-major axis (arcseconds)
i: 86.6 Inclination (degrees)
Ω: 19.1 Longitude of ascending node (degrees)
T: 2014.100 Epoch of periastron passage (year)
e: 0.2 Eccentricity
ω: 90.6 Longitude of periastron (degrees)
Start-Year: 1985.0 Year
End-Year: 2065.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS719AB
Position: 052730.31-772254.9 Epoch-2000 right ascension and declination
WDS-ID: 05275-7723 WDS designation
Discoverer Code: HDS719AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 37288 HD catalog number
Hipparcos number: 25526 Hipparcos catalog number
V1: 10.15 Magnitude of the primary
V2: 10.39 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS719AB
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ValueError		 Python 3.12.3: /usr/bin/python3
Fri Jul 11 17:14:20 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 = [-0.02538173397076725, -0.028263487901805173, -0.031027666672422786, -0.033659256422793375, -0.0361427707195874, -0.038462238567067875, -0.040601202967662536, -0.042542733394093805, -0.044269456346649666, -0.04576360911165466, -0.047007122900492686, -0.04798174269996637, -0.04866919233634404, -0.04905139432682214, -0.04911075486973193, -0.04883052451877362, -0.04819524429047656, -0.047191284637061875, -0.04580748024375219, -0.044035856312203685, ...], y_list = [0.09994763901138433, 0.10692256836243139, 0.11345277367889399, 0.11949823810609715, 0.12501807300504494, 0.12997054537873112, 0.134313143345729, 0.1380026896754387, 0.14099551552741124, 0.14324770892196612, 0.14471545504038966, 0.1453554880664272, 0.14512567668375892, 0.1439857671302624, 0.14189830826766475, 0.138829781587651, 0.13475195428709263, 0.12964346407548227, 0.12349162862813547, 0.11629444906118705, ...]
 /var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.02538173397076725, -0.028263487901805173, -0.031027666672422786, -0.033659256422793375, -0.0361427707195874, -0.038462238567067875, -0.040601202967662536, -0.042542733394093805, -0.044269456346649666, -0.04576360911165466, -0.047007122900492686, -0.04798174269996637, -0.04866919233634404, -0.04905139432682214, -0.04911075486973193, -0.04883052451877362, -0.04819524429047656, -0.047191284637061875, -0.04580748024375219, -0.044035856312203685, ...], y_list=[0.09994763901138433, 0.10692256836243139, 0.11345277367889399, 0.11949823810609715, 0.12501807300504494, 0.12997054537873112, 0.134313143345729, 0.1380026896754387, 0.14099551552741124, 0.14324770892196612, 0.14471545504038966, 0.1453554880664272, 0.14512567668375892, 0.1439857671302624, 0.14189830826766475, 0.138829781587651, 0.13475195428709263, 0.12964346407548227, 0.12349162862813547, 0.11629444906118705, ...])
    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([-0.00705743, -0.00211431, 0.00285422, 0...3, -0.02115007, -0.01663126, -0.01191566]), y = array([-0.0022389 , -0.01637647, -0.03031781, -0...6, 0.03966261, 0.02594753, 0.01192562]), s undefined, per undefined
 /usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-0.00705743, -0.00211431, 0.00285422, 0...3, -0.02115007, -0.01663126, -0.01191566]), array([-0.0022389 , -0.01637647, -0.03031781, -0...6, 0.03966261, 0.02594753, 0.01192562])], 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([-0.00705743, -0.00211431, 0.00285422, 0...3, -0.02115007, -0.01663126, -0.01191566]), array([-0.0022389 , -0.01637647, -0.03031781, -0...6, 0.03966261, 0.02594753, 0.01192562])], 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([[-0.00705743, -0.00211431, 0.00285422, ... 0.03966261, 0.02594753, -0.0022389 ]]), 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. , 0.02433791, 0.04838888, 0.071...2915, 0.92815978, 0.95162586, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=87, 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([[-0.00705743, -0.00211431, 0.00285422, ... 0.03966261, 0.02594753, -0.0022389 ]]), 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. , 0.02433791, 0.04838888, 0.071...2915, 0.92815978, 0.95162586, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 87, 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>