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JPL Small-Body Database Browser
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66812 (1999 UE8)
Classification: Main-belt Asteroid          SPK-ID: 2066812
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1067137402379696 4.0724e-08  
a 2.792556310875397 2.0974e-08 au
q 2.494552182116737 1.1647e-07 au
i 1.298870337171869 6.6245e-06 deg
node 317.5245644900008 0.0002136 deg
peri 98.85794441996494 0.0002161 deg
M 135.9902877220339 3.2931e-05 deg
tp 2458356.617342812932
(2018-Aug-26.11734281)
0.00015375 TDB
period 1704.51699507499
4.67
1.9203e-05
5.257e-08
d
yr
n .2112035263011043 2.3794e-09 deg/d
Q 3.090560439634057 2.3212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      7412 days (20.29 yr)  
   first obs. used      1999-10-06  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:03:53  

Additional Information
 Earth MOID = 1.50676 au 
 Jupiter MOID = 2.21219 au 
 T_jup = 3.320 
[ 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 15.4   n/a MPO426392  
diameter diameter 2.807 km 0.959 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.170   0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66812 (1999 UE8)          Discovered 1999-Oct-29 by CSS at Catalina
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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