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161715 Wenchuan (2006 MZ12)
Classification: Main-belt Asteroid          SPK-ID: 2161715
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579840846610782 7.0674e-08  
a 2.552907316852028 2.8224e-08 au
q 2.149588591174591 1.7648e-07 au
i 3.565589069842777 7.5347e-06 deg
node 301.7014456057893 0.00013145 deg
peri 3.785540178135329 0.0001338 deg
M 151.1126427400104 2.8994e-05 deg
tp 2456975.112352368760
(2014-Nov-13.61235237)
0.00011798 JED
period 1489.879000624715
4.08
2.4707e-05
6.764e-08
d
yr
n .2416303604850124 4.0071e-09 deg/d
Q 2.956226042529464 3.2683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      279  
   data-arc span      6404 days (17.53 yr)  
   first obs. used      1998-07-26  
   last obs. used      2016-02-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64509  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 08:12:07  

Additional Information
 Earth MOID = 1.13411 au 
 Jupiter MOID = 2.26912 au 
 T_jup = 3.419 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2 mag n/a MPO359840  

161715 Wenchuan           Discovered 2006 June 23 by Q.-z. Ye and T.-C. Yang at Lulin.
This minor planet is named in memory of the 90~000 people killed in the great Wenchuan earthquake on 2008 May 12.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080618/MPCPages.arcLast Updated: 2008-06-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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