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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06188207301257938 5.94e-08  
a 2.724435168956291 2.4137e-08 au
q 2.555841472912899 1.6195e-07 au
i 5.914472525915849 5.6797e-06 deg
node 65.38425048793914 6.3219e-05 deg
peri 270.6219513430316 8.0601e-05 deg
M 191.0581709780651 5.2861e-05 deg
tp 2459771.310877239655
(2022-Jul-10.81087724)
0.00024476 TDB
period 1642.529368912225
4.50
2.1828e-05
5.976e-08
d
yr
n .2191741632226717 2.9126e-09 deg/d
Q 2.893028864999683 2.563e-08 au
  Orbit Determination Parameters
   # obs. used (total)      309  
   data-arc span      7102 days (19.44 yr)  
   first obs. used      2000-11-17  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 10:30:32  

Additional Information
 Earth MOID = 1.55472 au 
 Jupiter MOID = 2.33068 au 
 T_jup = 3.347 
[ 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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