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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1423528122180207 1.2945e-07  
a 3.190902257919441 7.6293e-08 au
q 2.736668347991777 4.2978e-07 au
i 20.2388188018854 1.1983e-05 deg
node 280.3841582765971 3.2132e-05 deg
peri 26.48905087167708 5.1493e-05 deg
M 45.80834804581672 5.4585e-05 deg
tp 2457335.582402112886
(2015-Nov-09.08240211)
0.00030864 JED
period 2081.942250874741
5.70
7.4668e-05
2.044e-07
d
yr
n .1729154590377056 6.2015e-09 deg/d
Q 3.645136167847105 8.7154e-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 = 1.73336 au 
 Jupiter MOID = 1.59094 au 
 T_jup = 3.085 
[ 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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