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JPL Small-Body Database Browser
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146473 (2001 RD81)
Classification: Main-belt Asteroid          SPK-ID: 2146473
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143966103451021 5.3078e-08  
a 2.592417713348037 2.2238e-08 au
q 2.295853914342421 1.3867e-07 au
i 14.47751732172386 6.144e-06 deg
node 280.4845966960487 2.2094e-05 deg
peri 341.7165459923203 3.3793e-05 deg
M 148.956975757894 2.6572e-05 deg
tp 2457969.667234155866
(2017-Aug-04.16723416)
0.00011223 TDB
period 1524.599935977507
4.17
1.9618e-05
5.371e-08
d
yr
n .2361275187704791 3.0383e-09 deg/d
Q 2.888981512353653 2.4782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      6311 days (17.28 yr)  
   first obs. used      2001-09-09  
   last obs. used      2018-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55633  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:06:15  

Additional Information
 Earth MOID = 1.28324 au 
 Jupiter MOID = 2.23844 au 
 T_jup = 3.365 
[ 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 15.5   n/a MPO412892  

146473 (2001 RD81)          Discovered 2001-Sep-14 by NEAT at Palomar
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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