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192587 (1999 AA31)
Classification: Main-belt Asteroid          SPK-ID: 2192587
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956632564761372 3.9271e-08  
a 3.082477048312517 2.1378e-08 au
q 2.479349551026739 1.2486e-07 au
i 11.97213025698268 4.7514e-06 deg
node 127.0810082904477 2.6891e-05 deg
peri 314.6626721508714 3.2438e-05 deg
M 45.24432044019794 1.6008e-05 deg
tp 2458952.066720118576
(2020-Apr-12.56672012)
8.7692e-05 TDB
period 1976.733872608948
5.41
2.0564e-05
5.63e-08
d
yr
n .1821185972418543 1.8946e-09 deg/d
Q 3.685604545598296 2.5561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      394  
   data-arc span      8099 days (22.17 yr)  
   first obs. used      1999-01-14  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56383  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:20:00  

Additional Information
 Earth MOID = 1.51164 au 
 Jupiter MOID = 1.60366 au 
 T_jup = 3.165 
[ 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 15.76   n/a MPCxxxxx  
diameter diameter 4.452 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

192587 (1999 AA31)          Discovered 1999-Jan-14 by Spacewatch at Kitt Peak
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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