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JPL Small-Body Database Browser
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172385 (2003 AN21)
Classification: Main-belt Asteroid          SPK-ID: 2172385
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05804598389094832 4.6706e-08  
a 3.189315872627652 3.4545e-08 au
q 3.004188894861961 1.5511e-07 au
i 2.726168306654847 4.9802e-06 deg
node 46.14458179081946 0.00010657 deg
peri 127.5252264961993 0.00011431 deg
M 321.796048490893 4.1754e-05 deg
tp 2459221.275314793026
(2021-Jan-06.77531479)
0.000242 TDB
period 2080.389859843246
5.70
3.38e-05
9.254e-08
d
yr
n .1730444888955215 2.8115e-09 deg/d
Q 3.374442850393342 3.655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      6620 days (18.12 yr)  
   first obs. used      2001-11-21  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55165  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 21:45:53  

Additional Information
 Earth MOID = 2.00976 au 
 Jupiter MOID = 1.58673 au 
 T_jup = 3.193 
[ 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 15.4   n/a MPO459802  

172385 (2003 AN21)          Discovered 2003-Jan-05 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2003 AN21 = 2004 FA136 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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