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20002 Tillysmith (1991 EM)
Classification: Main-belt Asteroid          SPK-ID: 2020002
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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1420413800818031 1.2949e-07  
a 3.189617724005712 7.5594e-08 AU
q 2.736560020554561 4.2966e-07 AU
i 20.24252493714618 1.1985e-05 deg
node 280.3913841959948 3.2126e-05 deg
peri 26.60032094282751 5.1557e-05 deg
M 301.9366972370339 5.1977e-05 deg
tp 2457336.087376354692
(2015-Nov-09.58737635)
0.00030903 JED
period 2080.685213186749
5.70
7.3968e-05
2.025e-07
d
yr
n .173019925223878 6.1509e-09 deg/d
Q 3.642675427456863 8.6331e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      343  
   data-arc span      8410 days (23.03 yr)  
   first obs. used      1991-03-10  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57766  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:35:27  

Additional Information
 Earth MOID = 1.73486 AU 
 T_jup = 3.086 
[ 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 13.4 mag n/a MPO257011  

20002 Tillysmith           Discovered 1991 Mar. 10 by R. H. McNaught at Siding Spring.
Tilly Smith (b. 1994), in recognising the signs of a tsunami and alerting beachgoers, saved many lives on the island of Phuket in the 2004 Dec. 26 tsunami disaster.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1991 EM = 1998 MP28 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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