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JPL Small-Body Database Browser
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66404 (1999 LK20)
Classification: Main-belt Asteroid          SPK-ID: 2066404
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1943049518948348 3.6492e-08  
a 2.337701624253698 1.2523e-08 au
q 1.883474622608606 8.6304e-08 au
i 2.981893936085954 5.0439e-06 deg
node 56.67876170619383 8.6201e-05 deg
peri 207.0541087802503 8.7402e-05 deg
M 305.7869685241854 1.8986e-05 deg
tp 2459197.099874725692
(2020-Dec-13.59987473)
6.9976e-05 TDB
period 1305.515537031414
3.57
1.0491e-05
2.872e-08
d
yr
n .2757531333702828 2.2159e-09 deg/d
Q 2.79192862589879 1.4957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      10213 days (27.96 yr)  
   first obs. used      1991-01-11  
   last obs. used      2018-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59672  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:18:46  

Additional Information
 Earth MOID = .868424 au 
 Jupiter MOID = 2.28701 au 
 T_jup = 3.539 
[ 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 16.1   n/a MPO453060  
diameter diameter 1.343 km 0.245 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.427   0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66404 (1999 LK20)          Discovered 1999-Jun-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 LK20 = 1996 TL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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