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117211 (2004 RO205)
Classification: Main-belt Asteroid          SPK-ID: 2117211
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2093365865281332 6.7295e-08  
a 2.758986029394745 1.8126e-08 au
q 2.181429311722442 1.8197e-07 au
i 10.52956730932639 5.9533e-06 deg
node 40.01960632308907 2.5577e-05 deg
peri 336.0206522436334 2.7523e-05 deg
M 145.9940537438302 1.1302e-05 deg
tp 2458321.678880378425
(2018-Jul-22.17888038)
5.0459e-05 TDB
period 1673.873673598809
4.58
1.6495e-05
4.516e-08
d
yr
n .21506999343983 2.1194e-09 deg/d
Q 3.336542747067049 2.192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      9812 days (26.86 yr)  
   first obs. used      1993-03-23  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:44:12  

Additional Information
 Earth MOID = 1.1883 au 
 Jupiter MOID = 2.13232 au 
 T_jup = 3.286 
[ 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 MPO459553  
diameter diameter 4.155 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117211 (2004 RO205)          Discovered 2004-Sep-08 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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