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JPL Small-Body Database Browser
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74186 (1998 RJ40)
Classification: Main-belt Asteroid          SPK-ID: 2074186
[ 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 .05775173533737202 3.9868e-08  
a 2.335050845653434 9.236e-09 au
q 2.200197607215951 9.1453e-08 au
i 7.183280136600424 4.0535e-06 deg
node 125.9453328055322 2.9768e-05 deg
peri 351.3022521255188 4.764e-05 deg
M 157.6623915054818 3.9344e-05 deg
tp 2458029.720260903841
(2017-Oct-03.22026090)		 0.00014072 TDB
period 1303.295631333061
3.57		 7.7325e-06
2.117e-08		 d
yr
n .2762228241583055 1.6388e-09 deg/d
Q 2.469904084090918 9.7694e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1998-08-23  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54184  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:50:33  

Additional Information
 Earth MOID = 1.21682 au 
 Jupiter MOID = 2.56773 au 
 T_jup = 3.555 
[ 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 14.9   n/a MPO296658  
diameter diameter 2.895 km 0.591 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74186 (1998 RJ40)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RJ40 = 1999 XW33 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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