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17853 Ronaldsayer (1998 JK3)
Classification: Main-belt Asteroid          SPK-ID: 2017853
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667877040467133 6.1573e-08  
a 3.114893021832518 3.7798e-08 AU
q 2.595367166369944 1.9443e-07 AU
i 6.358950141815074 5.6714e-06 deg
node 122.9068016201196 5.7471e-05 deg
peri 213.1286734020029 6.1241e-05 deg
M 276.98793223912 2.7382e-05 deg
tp 2457463.522250717112
(2016-Mar-16.02225072)
0.00015821 JED
period 2007.997328030818
5.50
3.6549e-05
1.001e-07
d
yr
n .1792831070911041 3.2633e-09 deg/d
Q 3.634418877295093 4.4102e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      945  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1992-03-05  
   last obs. used      2014-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51381  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:39:37  

Additional Information
 Earth MOID = 1.58892 AU 
 T_jup = 3.187 
[ 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 13.1 mag n/a MPO263506  

17853 Ronaldsayer           Discovered 1998 May 1 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Ronald W. Sayer (b. 1967), of the Massachusetts Institute of Technology's Lincoln Laboratory, is a data analyst for the Lincoln Near-Earth Asteroid Research program.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Alternate Designations
 1998 JK3 = 1999 RY57 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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