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118412 (1999 RG253)
Classification: Main-belt Asteroid          SPK-ID: 2118412
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2325043699669183 6.0242e-08  
a 3.116146491137024 2.6738e-08 au
q 2.391628814490588 1.9636e-07 au
i 14.45112683864787 6.8474e-06 deg
node 3.418315904871556 2.0112e-05 deg
peri 148.1054066913498 2.2968e-05 deg
M 143.0182184916441 9.9202e-06 deg
tp 2458202.295652707230
(2018-Mar-24.79565271)
5.5209e-05 TDB
period 2009.209512298503
5.50
2.586e-05
7.08e-08
d
yr
n .1791749430790648 2.3061e-09 deg/d
Q 3.840664167783461 3.2955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      1999-09-08  
   last obs. used      2018-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54716  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:38:27  

Additional Information
 Earth MOID = 1.41356 au 
 Jupiter MOID = 1.19725 au 
 T_jup = 3.128 
[ 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 14.4   n/a MPO396013  
diameter diameter 8.220 km 1.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118412 (1999 RG253)          Discovered 1999-Sep-08 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 RG253 = 2000 XB42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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