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201271 (2002 RA201)
Classification: Main-belt Asteroid          SPK-ID: 2201271
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07646913573020341 7.392e-08  
a 2.99984908967482 3.2886e-08 au
q 2.770453222466349 2.1731e-07 au
i 17.12483831450707 7.5232e-06 deg
node 159.632381944396 2.0532e-05 deg
peri 195.5152157206818 4.438e-05 deg
M 58.9818023874055 4.0856e-05 deg
tp 2458289.569677474777
(2018-Jun-20.06967747)
0.00021473 TDB
period 1897.787310293891
5.20
3.1206e-05
8.544e-08
d
yr
n .1896945975174902 3.1193e-09 deg/d
Q 3.229244956883291 3.54e-08 au
  Orbit Determination Parameters
   # obs. used (total)      334  
   data-arc span      6419 days (17.57 yr)  
   first obs. used      2001-06-16  
   last obs. used      2019-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61666  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:54:19  

Additional Information
 Earth MOID = 1.76601 au 
 Jupiter MOID = 2.19383 au 
 T_jup = 3.182 
[ 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 MPO454424  
diameter diameter 4.665 km 1.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201271 (2002 RA201)          Discovered 2002-Sep-13 by LINEAR at Socorro
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

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