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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1775480782619519 4.6012e-08  
a 2.361821138733925 1.0772e-08 au
q 1.942484334353262 1.1344e-07 au
i 3.328269027928854 4.2767e-06 deg
node 132.9542475810295 6.9505e-05 deg
peri 237.5671741718858 7.0472e-05 deg
M 299.1071399805188 1.3734e-05 deg
tp 2459424.750183223195
(2021-Jul-29.25018322)		 5.1549e-05 TDB
period 1325.772281586419
3.63		 9.07e-06
2.483e-08		 d
yr
n .2715398451151987 1.8577e-09 deg/d
Q 2.781157943114589 1.2684e-08 au
   Orbit Determination Parameters
   # obs. used (total)      588  
   data-arc span      10103 days (27.66 yr)  
   first obs. used      1992-11-19  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:45  

Additional Information
 Earth MOID = .942914 au 
 Jupiter MOID = 2.68421 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 16.41   n/a E2021B55  
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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