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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .122502250419731 4.063e-08  
a 2.971070827837597 2.1298e-08 au
q 2.607107965271078 1.243e-07 au
i 1.121050864637007 4.8981e-06 deg
node 232.3663097246964 0.00020988 deg
peri 28.30495729490002 0.00021082 deg
M 49.92818704775195 1.8407e-05 deg
tp 2458741.075355421610
(2019-Sep-14.57535542)
9.5813e-05 TDB
period 1870.544026741813
5.12
2.0113e-05
5.507e-08
d
yr
n .1924573786306768 2.0694e-09 deg/d
Q 3.335033690404116 2.3907e-08 au
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      9626 days (26.35 yr)  
   first obs. used      1993-03-21  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58864  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:31:29  

Additional Information
 Earth MOID = 1.59176 au 
 Jupiter MOID = 1.72356 au 
 T_jup = 3.251 
[ 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 14.9   n/a MPO347669  
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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