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JPL Small-Body Database Browser
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268101 (2004 RA321)
Classification: Main-belt Asteroid          SPK-ID: 2268101
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1033101022883105 5.6877e-08  
a 2.773204553488955 2.6545e-08 au
q 2.486704507401603 1.6421e-07 au
i 4.53217572776814 6.4606e-06 deg
node 275.3065914877258 9.5336e-05 deg
peri 149.0990191794848 0.00010477 deg
M 84.63472025828844 4.1389e-05 deg
tp 2458603.932293054421
(2019-Apr-30.43229305)
0.00019255 TDB
period 1686.829873894776
4.62
2.4219e-05
6.631e-08
d
yr
n .2134180841656452 3.0642e-09 deg/d
Q 3.059704599576308 2.9287e-08 au
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      6949 days (19.03 yr)  
   first obs. used      2000-12-27  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55796  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 04:14:52  

Additional Information
 Earth MOID = 1.5016 au 
 Jupiter MOID = 2.20529 au 
 T_jup = 3.324 
[ 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 16.3   n/a MPO413198  
diameter diameter 2.992 km 0.706 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

268101 (2004 RA321)          Discovered 2004-Sep-13 by LINEAR at Socorro
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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Alternate Designations
 2004 RA321 = 2000 YA144 = 2005 YZ32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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