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JPL Small-Body Database Browser
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172384 (2003 AF21)
Classification: Main-belt Asteroid          SPK-ID: 2172384
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05155036895579981 4.3992e-08  
a 3.051429819474941 3.4281e-08 au
q 2.894127486438278 1.4244e-07 au
i 10.55765513113943 6.8499e-06 deg
node 72.61730040982063 3.3527e-05 deg
peri 46.78035230753571 8.3214e-05 deg
M 84.03106683041935 7.5758e-05 deg
tp 2458546.045003851954
(2019-Mar-03.54500385)
0.0004095 TDB
period 1946.944205093343
5.33
3.2809e-05
8.983e-08
d
yr
n .184905144717663 3.116e-09 deg/d
Q 3.208732152511604 3.6048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      6686 days (18.31 yr)  
   first obs. used      2001-10-15  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:47:55  

Additional Information
 Earth MOID = 1.92198 au 
 Jupiter MOID = 1.93354 au 
 T_jup = 3.209 
[ 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 15.2   n/a MPO469846  

172384 (2003 AF21)          Discovered 2003-Jan-05 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2003 AF21 = 2004 FL121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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