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226828 (2004 RR321)
Classification: Main-belt Asteroid          SPK-ID: 2226828
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1445525577186823 7.7917e-08  
a 3.174536050590481 4.8013e-08 au
q 2.715648744907463 2.7283e-07 au
i 4.382742684203446 9.7308e-06 deg
node 313.9441570503557 9.0955e-05 deg
peri 85.46713522008032 9.983e-05 deg
M 187.6416349572185 4.3079e-05 deg
tp 2459589.619324867876
(2022-Jan-10.11932487)
0.00026245 TDB
period 2065.945316109555
5.66
4.6869e-05
1.283e-07
d
yr
n .1742543702356687 3.9533e-09 deg/d
Q 3.6334233562735 5.4954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      4983 days (13.64 yr)  
   first obs. used      2004-08-27  
   last obs. used      2018-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58725  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:02:48  

Additional Information
 Earth MOID = 1.72742 au 
 Jupiter MOID = 1.81666 au 
 T_jup = 3.180 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO437075  
diameter diameter 5.319 km 0.579 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 259.241 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.057   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

226828 (2004 RR321)          Discovered 2004-Sep-13 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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