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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579619964138303 1.1908e-07  
a 2.553609186087648 4.6719e-08 AU
q 2.150235980992547 3.097e-07 AU
i 3.565508057226741 1.2844e-05 deg
node 301.7117084132022 0.0001555 deg
peri 3.946997695488321 0.00015931 deg
M 317.7021964296085 4.721e-05 deg
tp 2456975.623887776075
(2014-Nov-14.12388778)
0.00019836 JED
period 1490.493460126576
4.08
4.0903e-05
1.12e-07
d
yr
n .2415307477896804 6.6283e-09 deg/d
Q 2.95698239118275 5.4099e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      5346 days (14.64 yr)  
   first obs. used      1998-07-26  
   last obs. used      2013-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .70308  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-07 15:45:46  

Additional Information
 Earth MOID = 1.13431 AU 
 T_jup = 3.418 
[ 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 16.1 mag n/a MPO257723  

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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