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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207787519478648 2.9541e-08  
a 2.173551939665329 7.3453e-09 au
q 1.91103304909869 6.3754e-08 au
i 3.009483387808245 3.438e-06 deg
node 176.2794480548924 6.7674e-05 deg
peri 61.0893617523794 6.9977e-05 deg
M 201.9853091288916 2.0833e-05 deg
tp 2459714.245967388083
(2022-May-14.74596739)
6.9137e-05 TDB
period 1170.451603202966
3.20
5.9332e-06
1.624e-08
d
yr
n .30757358870273 1.5591e-09 deg/d
Q 2.436070830231968 8.2325e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1743  
   data-arc span      10155 days (27.80 yr)  
   first obs. used      1993-03-30  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4819  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:47:46  

Additional Information
 Earth MOID = .900051 au 
 Jupiter MOID = 2.55764 au 
 T_jup = 3.675 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456906.5 (2014-Sep-06.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211757236081061 2.9587e-08  
q 1.910116217138353 6.3891e-08 au
tp 2457373.360086789720
(2015-Dec-16.86008679)
6.3107e-05 TDB
node 176.3391423927593 6.7725e-05 deg
peri 61.08528526970186 7.0005e-05 deg
i 3.008005818234612 3.4371e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1743  
   data-arc span      10155 days (27.80 yr)  
   first obs. used      1993-03-30  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4819  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:47:46  

Additional Information
 Jupiter MOID = 2.55764 au 
 T_jup = 3.675 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.753662789359049E-16 -1.880695768500769E-15 2.834090086202235E-13 -1.630715000645886E-15 8.863048868791474E-14 5.688113813608434E-16
q -1.880695768500769E-15 4.082001326848376E-15 -4.461558075595503E-13 4.016856543464129E-15 -1.49024119851021E-13 -1.189252264203786E-15
tp 2.834090086202235E-13 -4.461558075595503E-13 3.98244187858819E-9 1.066841538393963E-11 1.129212832939448E-9 4.600416475875693E-13
node -1.630715000645886E-15 4.016856543464129E-15 1.066841538393963E-11 4.586706480504968E-9 -4.577068538873716E-9 -3.805943861879645E-11
peri 8.863048868791474E-14 -1.49024119851021E-13 1.129212832939448E-9 -4.577068538873716E-9 4.900706280503001E-9 3.813374763604811E-11
i 5.688113813608434E-16 -1.189252264203786E-15 4.600416475875693E-13 -3.805943861879645E-11 3.813374763604811E-11 1.18139616102655E-11

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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