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JPL Small-Body Database Browser
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226819 (2004 RH254)
Classification: Main-belt Asteroid          SPK-ID: 2226819
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06154166131216075 6.024e-08  
a 2.725151219522516 2.5621e-08 au
q 2.55744088614624 1.6582e-07 au
i 5.914824360806924 6.7315e-06 deg
node 65.39106910227257 6.512e-05 deg
peri 270.6090689363033 8.5898e-05 deg
M 103.4330467773945 5.7117e-05 deg
tp 2458128.392224285102
(2018-Jan-09.89222429)
0.00025986 TDB
period 1643.176958937926
4.50
2.3173e-05
6.344e-08
d
yr
n .219087784819407 3.0897e-09 deg/d
Q 2.892861552898793 2.7198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      279  
   data-arc span      6600 days (18.07 yr)  
   first obs. used      2000-11-17  
   last obs. used      2018-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61797  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:00:32  

Additional Information
 Earth MOID = 1.55542 au 
 Jupiter MOID = 2.3296 au 
 T_jup = 3.346 
[ 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 16.1   n/a MPO418210  
diameter diameter 4.152 km 0.632 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226819 (2004 RH254)          Discovered 2004-Sep-06 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2004 RH254 = 2004 RM341 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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