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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 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579619805937379 1.1637e-07  
a 2.553609175159731 4.3096e-08 AU
q 2.150236012189159 3.0574e-07 AU
i 3.565505990455374 1.2098e-05 deg
node 301.7117006610974 0.00015465 deg
peri 3.946998279092277 0.00015798 deg
M 317.702207953711 4.3153e-05 deg
tp 2456975.623838939162
(2014-Nov-14.12383894)
0.00018102 JED
period 1490.493450558948
4.08
3.7732e-05
1.033e-07
d
yr
n .2415307493400906 6.1143e-09 deg/d
Q 2.956982338130304 4.9904e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      5712 days (15.64 yr)  
   first obs. used      1998-07-26  
   last obs. used      2014-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .69831  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 16:24:49  

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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