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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1415177302174008 7.2784e-08  
a 3.182233405897632 4.9456e-08 au
q 2.731890957273011 2.5925e-07 au
i 4.390440800632475 7.1242e-06 deg
node 313.7721159629741 8.2697e-05 deg
peri 85.28576941778397 8.8895e-05 deg
M 257.42273199033 3.8142e-05 deg
tp 2459591.306275819245
(2022-Jan-11.80627582)
0.00023051 TDB
period 2073.463871887071
5.68
4.8337e-05
1.323e-07
d
yr
n .173622509116767 4.0475e-09 deg/d
Q 3.632575854522254 5.6455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      5392 days (14.76 yr)  
   first obs. used      2004-08-27  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59211  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:58:45  

Additional Information
 Earth MOID = 1.74415 au 
 Jupiter MOID = 1.81862 au 
 T_jup = 3.179 
[ 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-August); 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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