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11571 Daens (1993 OR8)
Classification: Main-belt Asteroid          SPK-ID: 2011571
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2270407684365254 3.9634e-08  
a 3.083888476832896 2.0475e-08 au
q 2.38372006728021 1.2586e-07 au
i 2.887833177938518 4.7277e-06 deg
node 136.7713538522969 8.9648e-05 deg
peri 270.8236445868836 9.0414e-05 deg
M 307.0340572970868 1.4197e-05 deg
tp 2459491.531922907257
(2021-Oct-04.03192291)
7.9807e-05 TDB
period 1978.091711390423
5.42
1.97e-05
5.394e-08
d
yr
n .1819935839814787 1.8125e-09 deg/d
Q 3.784056886385583 2.5124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1180  
   data-arc span      9961 days (27.27 yr)  
   first obs. used      1993-07-13  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:58:40  

Additional Information
 Earth MOID = 1.39496 au 
 Jupiter MOID = 1.62246 au 
 T_jup = 3.185 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.11   n/a E2021B10  
diameter diameter 6.015 km 1.400 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.134   0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11571 Daens           Discovered 1993 July 20 by E. W. Elst at the European Southern Observatory.
Adolf Daens (1839-1907), a Flemish priest at Aalst, will always be remembered for his dedication to fighting industrial exploitation of the Flemish people. Confronting great resistance from the higher clergy for his actions, in 1899 he was finally ordered to resign his office by the bishop of Ghent.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1993 OR8 = 1994 VS2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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