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JPL Small-Body Database Browser
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390287 (2013 AM21)
Classification: Main-belt Asteroid          SPK-ID: 2390287
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04480931129854663 8.6373e-08  
a 3.098837658666916 5.2653e-08 au
q 2.959980877356051 2.8007e-07 au
i 11.06337164381063 6.3438e-06 deg
node 99.29839915004541 5.2677e-05 deg
peri 234.1940875867345 0.00010979 deg
M 202.2216192087473 9.798e-05 deg
tp 2459473.756161338708
(2021-Sep-16.25616134)
0.00054067 TDB
period 1992.492358619539
5.46
5.0782e-05
1.39e-07
d
yr
n .180678233691907 4.6049e-09 deg/d
Q 3.237694439977781 5.5012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      6236 days (17.07 yr)  
   first obs. used      2002-02-08  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64214  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 15:01:09  

Additional Information
 Earth MOID = 1.9616 au 
 Jupiter MOID = 1.97677 au 
 T_jup = 3.192 
[ 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 15.5   n/a MPO434437  

390287 (2013 AM21)          Discovered 2006-Nov-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 2013 AM21 = 2009 HW71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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