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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379303488917062 5.5699e-08  
a 2.352952549725932 1.1665e-08 au
q 2.028408983616604 1.3011e-07 au
i 4.559464380001875 6.5735e-06 deg
node 355.8581841956552 5.6893e-05 deg
peri 36.0586654867325 5.9994e-05 deg
M 357.5233031666324 1.8373e-05 deg
tp 2459009.569608250979
(2020-Jun-09.06960825)		 6.7297e-05 TDB
period 1318.311925126858
3.61		 9.8035e-06
2.684e-08		 d
yr
n .2730764951286913 2.0307e-09 deg/d
Q 2.67749611583526 1.3274e-08 au
   Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      7101 days (19.44 yr)  
   first obs. used      1998-11-11  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62089  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:25:46  

Additional Information
 Earth MOID = 1.03582 au 
 Jupiter MOID = 2.76156 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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