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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09213065004505322 4.9409e-08  
a 2.770930131571772 2.5587e-08 au
q 2.51564253732064 1.4089e-07 au
i 13.10442218099043 7.1337e-06 deg
node 19.00395358711341 2.0419e-05 deg
peri 227.5912353287197 4.2799e-05 deg
M 286.2276276477102 4.1372e-05 deg
tp 2459545.745509554838
(2021-Nov-27.24550955)
0.00019596 TDB
period 1684.755139040662
4.61
2.3336e-05
6.389e-08
d
yr
n .2136809033299595 2.9598e-09 deg/d
Q 3.026217725822903 2.7945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      9230 days (25.27 yr)  
   first obs. used      1995-10-18  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 10:48:55  

Additional Information
 Earth MOID = 1.52227 au 
 Jupiter MOID = 2.01179 au 
 T_jup = 3.293 
[ 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 15.4   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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