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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207787502849606 2.9516e-08  
a 2.173551939820907 7.2925e-09 au
q 1.911033052849886 6.3727e-08 au
i 3.009483605439975 3.3486e-06 deg
node 176.2794473720174 6.7624e-05 deg
peri 61.08936350806878 6.9895e-05 deg
M 201.9853084044655 2.0779e-05 deg
tp 2459714.245969798536
(2022-May-14.74596980)		 6.8986e-05 TDB
period 1170.451603328634
3.20		 5.8905e-06
1.613e-08		 d
yr
n .3075735886697068 1.5479e-09 deg/d
Q 2.436070826791928 8.1733e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      10177 days (27.86 yr)  
   first obs. used      1993-03-30  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48206  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:20:31  

Additional Information
 Earth MOID = .900051 au 
 Jupiter MOID = 2.55764 au 
 T_jup = 3.675 
[ 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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