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17698 Racheldavis (1997 EW42)
Classification: Main-belt Asteroid          SPK-ID: 2017698
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0554092236289102 3.9796e-08  
a 3.114502434556894 2.0299e-08 au
q 2.941930272667746 1.2634e-07 au
i 11.20253824723622 4.5334e-06 deg
node 160.5239871060703 2.1852e-05 deg
peri 172.7334903876946 4.5632e-05 deg
M 261.1808689063558 4.188e-05 deg
tp 2459551.586749707109
(2021-Dec-03.08674971)
0.00023541 TDB
period 2007.619655211879
5.50
1.9627e-05
5.374e-08
d
yr
n .1793168337764688 1.7531e-09 deg/d
Q 3.287074596446042 2.1424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1443  
   data-arc span      8365 days (22.90 yr)  
   first obs. used      1997-03-10  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50741  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:09:42  

Additional Information
 Earth MOID = 1.93236 au 
 Jupiter MOID = 2.00145 au 
 T_jup = 3.186 
[ 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 13.3   n/a MPO474001  
diameter diameter 11.716 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17698 Racheldavis           Discovered 1997 Mar. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Rachel Michelle Davis (b. 1993) is a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors, for her materials science project. She attends the Smithtown High School East, St. James, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ show close-approach data ]
Alternate Designations
 1997 EW42 = 1998 HU124 = 1999 RZ46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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