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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02692784056062901 7.5537e-08  
a 2.933101990693639 2.8608e-08 au
q 2.854119887940177 2.1877e-07 au
i 13.05976239733843 6.0562e-06 deg
node 100.5052404309352 3.7354e-05 deg
peri 329.6177397010188 0.00018682 deg
M 111.8759263799818 0.00017947 deg
tp 2458430.305114380567
(2018-Nov-07.80511438)
0.00091612 TDB
period 1834.801869043789
5.02
2.6844e-05
7.349e-08
d
yr
n .1962064711584443 2.8705e-09 deg/d
Q 3.012084093447101 2.9378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      457  
   data-arc span      7373 days (20.19 yr)  
   first obs. used      2000-03-12  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52338  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 05:06:40  

Additional Information
 Earth MOID = 1.87555 au 
 Jupiter MOID = 2.14607 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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