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JPL Small-Body Database Browser
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56234 (1999 JL42)
Classification: Main-belt Asteroid          SPK-ID: 2056234
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01429109116188966 3.4844e-08  
a 2.833989264414575 1.5603e-08 au
q 2.793488465485009 9.9059e-08 au
i 3.111125052426473 3.6716e-06 deg
node 68.68059849009295 7.3424e-05 deg
peri 228.552284251377 0.00015859 deg
M .08784616890306469 0.00013979 deg
tp 2458600.074777679407
(2019-Apr-26.57477768)
0.00067668 TDB
period 1742.592048407439
4.77
1.4391e-05
3.94e-08
d
yr
n .2065887999024243 1.7061e-09 deg/d
Q 2.87449006334414 1.5826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      7477 days (20.47 yr)  
   first obs. used      1999-05-08  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:12:09  

Additional Information
 Earth MOID = 1.77788 au 
 Jupiter MOID = 2.12967 au 
 T_jup = 3.310 
[ 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 14.4   n/a MPO436176  
diameter diameter 3.547 km 0.937 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.293   0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56234 (1999 JL42)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030318/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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