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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456996.5 (2014-Dec-05.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210116524026421 2.9556e-08  
q 1.910781468255845 6.3863e-08 au
tp 2457373.339081219004
(2015-Dec-16.83908122)
6.2923e-05 TDB
node 176.3284350943768 6.7663e-05 deg
peri 61.05214059240259 6.9918e-05 deg
i 3.008133923171096 3.348e-06 deg
  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
 Jupiter MOID = 2.55764 au 
 T_jup = 3.675 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.735617178129533E-16 -1.878041303041381E-15 2.890821263425341E-13 -1.624993429303764E-15 9.085408148095951E-14 6.032383288988314E-16
q -1.878041303041381E-15 4.078514896519338E-15 -4.526926063108969E-13 3.85389311840403E-15 -1.516672322009777E-13 -1.265338026351896E-15
tp 2.890821263425341E-13 -4.526926063108969E-13 3.959340338269547E-9 1.026640561976522E-11 1.119681429943473E-9 5.016716695390197E-13
node -1.624993429303764E-15 3.85389311840403E-15 1.026640561976522E-11 4.57827815012332E-9 -4.568763765401445E-9 -3.60622211298339E-11
peri 9.085408148095951E-14 -1.516672322009777E-13 1.119681429943473E-9 -4.568763765401445E-9 4.888464908849444E-9 3.615040043079967E-11
i 6.032383288988314E-16 -1.265338026351896E-15 5.016716695390197E-13 -3.60622211298339E-11 3.615040043079967E-11 1.120882690739998E-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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