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118410 (1999 RD239)
Classification: Main-belt Asteroid          SPK-ID: 2118410
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1811397966092756 5.9923e-08  
a 3.17684316700676 2.5826e-08 au
q 2.601390441875588 1.9355e-07 au
i 7.778956747692553 6.11e-06 deg
node 57.47474746887332 4.1958e-05 deg
peri 314.2313713454032 4.4138e-05 deg
M 231.5161584077178 1.6754e-05 deg
tp 2459738.638915355073
(2022-Jun-08.13891536)
0.00010195 TDB
period 2068.197885700425
5.66
2.522e-05
6.905e-08
d
yr
n .1740645817738474 2.1226e-09 deg/d
Q 3.752295892137931 3.0504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      556  
   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      .56463  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:20:27  

Additional Information
 Earth MOID = 1.60957 au 
 Jupiter MOID = 1.73826 au 
 T_jup = 3.161 
[ 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 14.6   n/a MPO396013  
diameter diameter 7.081 km 0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118410 (1999 RD239)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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