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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607991971191167 3.8626e-08  
a 2.421194971981297 7.5769e-09 au
q 2.031868764417862 9.4416e-08 au
i 1.246433934228046 4.1872e-06 deg
node 222.9340407925579 0.00016148 deg
peri 308.4986829304137 0.00016187 deg
M 356.3662068938011 1.0829e-05 deg
tp 2459214.389952731435
(2020-Dec-30.88995273)		 4.1406e-05 TDB
period 1376.078064209708
3.77		 6.4594e-06
1.768e-08		 d
yr
n .2616130649584555 1.228e-09 deg/d
Q 2.810521179544732 8.7952e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2022  
   data-arc span      10899 days (29.84 yr)  
   first obs. used      1991-05-13  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48614  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:58:25  

Additional Information
 Earth MOID = 1.03741 au 
 Jupiter MOID = 2.1587 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 14.43   n/a E2021B10  
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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