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JPL Small-Body Database Browser
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243631 (1999 RP203)
Classification: Main-belt Asteroid          SPK-ID: 2243631
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2371189414910429 4.593e-08  
a 3.147274450660987 2.7919e-08 au
q 2.40099606433845 1.4107e-07 au
i 18.2966505071291 7.1284e-06 deg
node 219.3024586905146 1.446e-05 deg
peri 132.5877587224877 2.4014e-05 deg
M 187.7877333378129 1.6364e-05 deg
tp 2459576.077854593616
(2021-Dec-27.57785459)
9.96e-05 TDB
period 2039.390308604637
5.58
2.7136e-05
7.429e-08
d
yr
n .1765233454729488 2.3488e-09 deg/d
Q 3.893552836983523 3.4539e-08 au
  Orbit Determination Parameters
   # obs. used (total)      355  
   data-arc span      7176 days (19.65 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52834  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:37:47  

Additional Information
 Earth MOID = 1.4362 au 
 Jupiter MOID = 1.79458 au 
 T_jup = 3.088 
[ 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 MPO433596  
diameter diameter 4.830 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243631 (1999 RP203)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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