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JPL Small-Body Database Browser
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382728 (2003 AD21)
Classification: Main-belt Asteroid          SPK-ID: 2382728
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809448190103276 6.0321e-08  
a 2.384416056402513 3.1472e-08 au
q 1.952968324631442 1.3661e-07 au
i 11.60814823054042 1.2863e-05 deg
node 295.8789905538173 3.6653e-05 deg
peri 125.5324674704021 6.0248e-05 deg
M 186.752934630123 4.7885e-05 deg
tp 2459247.694576803619
(2021-Feb-02.19457680)
0.00018745 TDB
period 1344.842679741077
3.68
2.6626e-05
7.29e-08
d
yr
n .2676893033089276 5.2999e-09 deg/d
Q 2.815863788173585 3.7167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      7073 days (19.36 yr)  
   first obs. used      1998-11-07  
   last obs. used      2018-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49051  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 11:38:05  

Additional Information
 Earth MOID = .991023 au 
 Jupiter MOID = 2.52285 au 
 T_jup = 3.487 
[ 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 17.0   n/a MPO437566  

382728 (2003 AD21)          Discovered 2003-Jan-05 by LINEAR at Socorro
Reference: Last Updated: 2014-01-21

[ show close-approach data ]
Alternate Designations
 2003 AD21 = 2009 UA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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