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18664 Rafaelta (1998 FA43)
Classification: Main-belt Asteroid          SPK-ID: 2018664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1223085182458016 3.3727e-08  
a 2.969492522126968 1.7499e-08 au
q 2.60629829180363 9.72e-08 au
i 1.1211982756358 3.8446e-06 deg
node 232.3457793762541 0.00020428 deg
peri 28.10581625869805 0.00020525 deg
M 88.66453560131831 1.8102e-05 deg
tp 2458740.170058634658
(2019-Sep-13.67005863)
9.4662e-05 TDB
period 1869.053706395989
5.12
1.6521e-05
4.523e-08
d
yr
n .1926108376490538 1.7025e-09 deg/d
Q 3.332686752450305 1.9639e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      10124 days (27.72 yr)  
   first obs. used      1993-03-21  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55988  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:30  

Additional Information
 Earth MOID = 1.58927 au 
 Jupiter MOID = 1.72414 au 
 T_jup = 3.252 
[ 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 14.95   n/a E2021B10  
diameter diameter 5.199 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18664 Rafaelta           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Rafael Andres Torrech-Antonetty (b. 1988) was awarded third place in the 2003 Intel International Science and Engineering Fair for his behavioral and social sciences team project. He attends the Isidro A. Sanchez High School, Luquillo, Puerto Rico, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 FA43 = 1993 FT73 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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