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17853 Ronaldsayer (1998 JK3)
Classification: Main-belt Asteroid          SPK-ID: 2017853
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1677139512908181 3.8449e-08  
a 3.114044642191207 1.82e-08 au
q 2.591775910753317 1.2653e-07 au
i 6.360566857433672 3.6056e-06 deg
node 122.8965277219165 4.583e-05 deg
peri 212.6629064147366 4.8355e-05 deg
M 276.0455177459343 1.7831e-05 deg
tp 2459468.587523073273
(2021-Sep-11.08752307)
0.00010081 TDB
period 2007.177029529209
5.50
1.7596e-05
4.818e-08
d
yr
n .1793563769930345 1.5724e-09 deg/d
Q 3.636313373629096 2.1252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1749  
   data-arc span      10375 days (28.41 yr)  
   first obs. used      1992-03-05  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49224  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:15:51  

Additional Information
 Earth MOID = 1.58459 au 
 Jupiter MOID = 1.74286 au 
 T_jup = 3.187 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a MPO474003  
diameter diameter 11.982 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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