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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419709413445103 1.2948e-07  
a 3.189018678011598 7.5684e-08 AU
q 2.736270694329066 4.2941e-07 AU
i 20.24264536731778 1.1985e-05 deg
node 280.3911773087536 3.2128e-05 deg
peri 26.66871277851589 5.1573e-05 deg
M 267.2531580725642 5.1125e-05 deg
tp 2457336.396167381204
(2015-Nov-09.89616738)
0.00030909 JED
period 2080.099076669093
5.70
7.4049e-05
2.027e-07
d
yr
n .1730686792941016 6.1611e-09 deg/d
Q 3.641766661694131 8.6429e-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 = 1.73272 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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