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390854 (2004 RJ208)
Classification: Main-belt Asteroid          SPK-ID: 2390854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2910081909988753 9.2762e-08  
a 3.157070364043681 4.5461e-08 au
q 2.238337028547169 3.1055e-07 au
i 13.13113658208995 6.7177e-06 deg
node 261.305400847901 3.5896e-05 deg
peri 52.1456423900438 3.8347e-05 deg
M 239.3427652988151 1.1189e-05 deg
tp 2459287.213659279438
(2021-Mar-13.71365928)
7.2529e-05 TDB
period 2048.919138192132
5.61
4.4256e-05
1.212e-07
d
yr
n .1757023951260696 3.7951e-09 deg/d
Q 4.075803699540194 5.869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      226  
   data-arc span      5358 days (14.67 yr)  
   first obs. used      2004-08-29  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50769  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:27:46  

Additional Information
 Earth MOID = 1.25028 au 
 Jupiter MOID = 1.37637 au 
 T_jup = 3.100 
[ 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 15.5   n/a MPO397417  
diameter diameter 5.826 km 0.688 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.047   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

390854 (2004 RJ208)          Discovered 2004-Sep-11 by LINEAR at Socorro
Reference: Last Updated: 2014-04-17

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