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JPL Small-Body Database Browser
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19571 (1999 LA7)
Classification: Main-belt Asteroid          SPK-ID: 2019571
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160893681174941 4.1365e-08  
a 2.421324272779269 8.4605e-09 au
q 2.031748497213575 1.021e-07 au
i 1.246462309641334 4.2826e-06 deg
node 222.9425580869872 0.00016757 deg
peri 308.5099870987048 0.00016794 deg
M 304.0365307223914 1.153e-05 deg
tp 2459214.434087473065
(2020-Dec-30.93408747)		 4.4424e-05 TDB
period 1376.188297195474
3.77		 7.213e-06
1.975e-08		 d
yr
n .2615921096943215 1.3711e-09 deg/d
Q 2.810900048344962 9.8218e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1803  
   data-arc span      10488 days (28.71 yr)  
   first obs. used      1991-05-13  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:50:52  

Additional Information
 Earth MOID = 1.03766 au 
 Jupiter MOID = 2.15929 au 
 T_jup = 3.495 
[ 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 14.4   n/a MPO395190  
diameter diameter 3.661 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.275   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19571 (1999 LA7)          Discovered 1999-Jun-08 by Spacewatch at Kitt Peak
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 LA7 = 1991 JO3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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