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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2373052695051135 4.5453e-08  
a 3.147468757684244 2.7092e-08 au
q 2.40055783588306 1.3951e-07 au
i 18.29664528723399 7.0932e-06 deg
node 219.3010669503406 1.2882e-05 deg
peri 132.5235801666981 2.181e-05 deg
M 258.5038861309694 1.616e-05 deg
tp 2459575.526000223699
(2021-Dec-27.02600022)
9.6182e-05 TDB
period 2039.579173914522
5.58
2.6333e-05
7.21e-08
d
yr
n .1765069993870645 2.2789e-09 deg/d
Q 3.894379679485428 3.3521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      7537 days (20.64 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51138  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 12:49:44  

Additional Information
 Earth MOID = 1.43666 au 
 Jupiter MOID = 1.79747 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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