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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579959674875225 1.0587e-07  
a 2.553785368837164 3.4084e-08 AU
q 2.150297578732257 2.8001e-07 AU
i 3.565485185763702 9.9248e-06 deg
node 301.7110742900418 0.00013274 deg
peri 3.915428046909497 0.00013504 deg
M 6.030819204792986 3.1063e-05 deg
tp 2456975.528258708865
(2014-Nov-14.02825871)
0.00012845 JED
period 1490.647714602988
4.08
2.9843e-05
8.171e-08
d
yr
n .2415057538231833 4.8349e-09 deg/d
Q 2.957273158942072 3.9469e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      5792 days (15.86 yr)  
   first obs. used      1998-07-26  
   last obs. used      2014-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .68225  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 17:11:36  

Additional Information
 Earth MOID = 1.13631 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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