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117217 (2004 RA254)
Classification: Main-belt Asteroid          SPK-ID: 2117217
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318037450837003 4.8778e-08  
a 2.685463801278236 2.2243e-08 au
q 2.331509614983054 1.3613e-07 au
i 10.84652961259049 4.529e-06 deg
node 97.15936058733294 2.8104e-05 deg
peri 261.8906219775727 3.2487e-05 deg
M 111.4206180768019 1.8287e-05 deg
tp 2458103.003026152308
(2017-Dec-15.50302615)
7.9662e-05 TDB
period 1607.412646568851
4.40
1.9971e-05
5.468e-08
d
yr
n .223962403660596 2.7826e-09 deg/d
Q 3.039417987573417 2.5175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      737  
   data-arc span      6651 days (18.21 yr)  
   first obs. used      2000-10-30  
   last obs. used      2019-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:00:32  

Additional Information
 Earth MOID = 1.35653 au 
 Jupiter MOID = 2.44378 au 
 T_jup = 3.336 
[ 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 15.0   n/a MPO432677  
diameter diameter 2.999 km 0.584 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117217 (2004 RA254)          Discovered 2004-Sep-06 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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