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134525 (1999 RW21)
Classification: Main-belt Asteroid          SPK-ID: 2134525
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777197961408961 5.1867e-08  
a 2.36088437865274 1.0926e-08 au
q 1.941308488166349 1.2689e-07 au
i 3.32783774666819 5.6575e-06 deg
node 132.9616163776693 7.552e-05 deg
peri 237.6968285994047 7.6791e-05 deg
M 244.6576025852493 1.4732e-05 deg
tp 2459425.018848973946
(2021-Jul-29.51884897)
5.5836e-05 TDB
period 1324.983605820873
3.63
9.1976e-06
2.518e-08
d
yr
n .2717014749604902 1.8861e-09 deg/d
Q 2.780460269139131 1.2867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      10021 days (27.44 yr)  
   first obs. used      1992-11-19  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:20:01  

Additional Information
 Earth MOID = .943292 au 
 Jupiter MOID = 2.68392 au 
 T_jup = 3.527 
[ 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 16.4   n/a MPO338172  
diameter diameter 3.221 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134525 (1999 RW21)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

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