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JPL Small-Body Database Browser
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66400 (1999 LT7)
Classification: Aten [NEO]          SPK-ID: 2066400
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456128.5 (2012-Jul-20.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5725539215551606 5.179e-08  
a .8552509082427779 2.4706e-09 au
q .3655736468147626 4.3985e-08 au
i 9.065620769342509 6.8242e-06 deg
node 79.89379091285117 1.9287e-05 deg
peri 341.3047961790854 2.0146e-05 deg
M 75.81136557826373 1.5863e-05 deg
tp 2456067.662611712150
(2012-May-20.16261171)		 1.2842e-05 TDB
period 288.8941468943211
0.79		 1.2518e-06
3.427e-09		 d
yr
n 1.246131165584638 5.3996e-09 deg/d
Q 1.344928169670793 3.8851e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -4.236770278558055E-14 9.043E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
   Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      11393 days (31.19 yr)  
   first obs. used      1987-04-21  
   last obs. used      2018-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53372  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-14 15:34:15  

Additional Information
 Earth MOID = .0587702 au 
 Jupiter MOID = 4.00855 au 
 T_jup = 6.740 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 19.1   n/a MPO436244  
diameter diameter 0.411 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.182   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

66400 (1999 LT7)          Discovered 1999-Jun-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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