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JPL Small-Body Database Browser
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154877 (2004 RA118)
Classification: Main-belt Asteroid          SPK-ID: 2154877
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09221315220628949 4.9733e-08  
a 2.77124710696493 2.8096e-08 au
q 2.515701675689134 1.4111e-07 au
i 13.10343337204257 7.1932e-06 deg
node 19.01153183714619 2.0689e-05 deg
peri 227.5044823805959 4.3615e-05 deg
M 243.5871030519662 4.2643e-05 deg
tp 2459545.391335443213
(2021-Nov-26.89133544)		 0.00020407 TDB
period 1685.04423394877
4.61		 2.5626e-05
7.016e-08		 d
yr
n .2136442431284833 3.249e-09 deg/d
Q 3.026792538240727 3.0687e-08 au
   Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      8859 days (24.25 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:34:56  

Additional Information
 Earth MOID = 1.52359 au 
 Jupiter MOID = 2.01217 au 
 T_jup = 3.293 
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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO366898  

154877 (2004 RA118)          Discovered 2004-Sep-07 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

Alternate Designations
 2004 RA118 = 1998 HJ21 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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