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JPL Small-Body Database Browser
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201257 (2002 RP138)
Classification: Main-belt Asteroid          SPK-ID: 2201257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02696447961937879 7.797e-08  
a 2.934233324674187 3.611e-08 au
q 2.855113249992508 2.3299e-07 au
i 13.05940679307243 6.9132e-06 deg
node 100.5043141047863 3.8341e-05 deg
peri 330.471741702326 0.00019393 deg
M 32.57126827850517 0.00018548 deg
tp 2458434.398878976378
(2018-Nov-11.89887898)
0.00094674 TDB
period 1835.863530311633
5.03
3.3889e-05
9.278e-08
d
yr
n .196093006945288 3.6198e-09 deg/d
Q 3.013353399355867 3.7083e-08 au
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      6934 days (18.98 yr)  
   first obs. used      2000-03-12  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58822  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:12:31  

Additional Information
 Earth MOID = 1.87625 au 
 Jupiter MOID = 2.14519 au 
 T_jup = 3.236 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO320978  
diameter diameter 4.943 km 0.395 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201257 (2002 RP138)          Discovered 2002-Sep-10 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

Alternate Designations
 2002 RP138 = 2003 YK85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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