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JPL Small-Body Database Browser
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59542 (1999 JG31)
Classification: Main-belt Asteroid          SPK-ID: 2059542
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2677685204184799 4.076e-08  
a 2.636192904801058 1.295e-08 au
q 1.930303431144784 1.0625e-07 au
i 9.781747824536222 6.1191e-06 deg
node 225.4204283152056 2.4427e-05 deg
peri 104.5063039957398 2.7246e-05 deg
M 163.1740331242027 1.2632e-05 deg
tp 2457891.881062740835
(2017-May-18.38106274)
5.3309e-05 TDB
period 1563.378759040193
4.28
1.152e-05
3.154e-08
d
yr
n .2302704945415885 1.6968e-09 deg/d
Q 3.342082378457332 1.6418e-08 au
  Orbit Determination Parameters
   # obs. used (total)      923  
   data-arc span      7237 days (19.81 yr)  
   first obs. used      1999-05-07  
   last obs. used      2019-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52466  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:39:17  

Additional Information
 Earth MOID = .947191 au 
 Jupiter MOID = 2.16733 au 
 T_jup = 3.325 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO365938  
diameter diameter 7.367 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59542 (1999 JG31)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JG31 = 2000 UQ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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