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20431 (1999 AA10)
Classification: Main-belt Asteroid          SPK-ID: 2020431
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1209643200473758 2.9686e-08  
a 2.17318858690268 7.9068e-09 au
q 1.91031030715328 6.3862e-08 au
i 3.00968300454799 4.1109e-06 deg
node 176.2840290404348 6.9548e-05 deg
peri 61.081644392361 7.214e-05 deg
M 140.4634046339417 2.1279e-05 deg
tp 2458543.932240755690
(2019-Mar-01.43224076)		 6.8273e-05 TDB
period 1170.158118808935
3.20		 6.3861e-06
1.748e-08		 d
yr
n .3076507304554977 1.679e-09 deg/d
Q 2.436066866652081 8.8632e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1603  
   data-arc span      10093 days (27.63 yr)  
   first obs. used      1993-03-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:13:47  

Additional Information
 Earth MOID = .900712 au 
 Jupiter MOID = 2.5588 au 
 T_jup = 3.676 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO384929  
diameter diameter 2.457 km 0.452 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.386   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20431 (1999 AA10)          Discovered 1999-Jan-13 by Korlevic, K. at Visnjan
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AA10 = 1996 JP2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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