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120014 (2003 AT21)
Classification: Main-belt Asteroid          SPK-ID: 2120014
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1380901290490618 4.6719e-08  
a 2.353431963737381 1.0035e-08 au
q 2.028446240156699 1.0713e-07 au
i 4.55935853547245 5.0423e-06 deg
node 355.8546480427534 5.6032e-05 deg
peri 36.09311217784678 5.8948e-05 deg
M 52.0980531553295 1.7086e-05 deg
tp 2459009.659787234910
(2020-Jun-09.15978723)		 6.2422e-05 TDB
period 1318.714854672155
3.61		 8.4345e-06
2.309e-08		 d
yr
n .2729930573880578 1.7461e-09 deg/d
Q 2.678417687318063 1.1421e-08 au
   Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      8103 days (22.18 yr)  
   first obs. used      1998-11-11  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:23:55  

Additional Information
 Earth MOID = 1.03468 au 
 Jupiter MOID = 2.76154 au 
 T_jup = 3.539 
[ 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 16.3   n/a MPO436579  

120014 (2003 AT21)          Discovered 2003-Jan-05 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2003 AT21 = 2000 GD187 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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