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JPL Small-Body Database Browser
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56233 (1999 JK42)
Classification: Main-belt Asteroid          SPK-ID: 2056233
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128764039207918 3.5237e-08  
a 2.790122930658305 1.5727e-08 au
q 2.475183887748655 9.9198e-08 au
i 16.61803759056986 4.5077e-06 deg
node 227.3472548133446 1.3811e-05 deg
peri 226.4058695167007 2.5235e-05 deg
M 228.1882731506667 2.1552e-05 deg
tp 2459223.782571846571
(2021-Jan-09.28257185)
0.00010378 TDB
period 1702.289555171703
4.66
1.4393e-05
3.941e-08
d
yr
n .2114798853733719 1.7881e-09 deg/d
Q 3.105061973567956 1.7502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1123  
   data-arc span      7506 days (20.55 yr)  
   first obs. used      1999-05-10  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51826  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 04:42:01  

Additional Information
 Earth MOID = 1.51724 au 
 Jupiter MOID = 2.28071 au 
 T_jup = 3.259 
[ 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 14.1   n/a MPO449364  
diameter diameter 5.317 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.189   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56233 (1999 JK42)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JK42 = 2001 QE142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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