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146444 (2001 RB)
Classification: Main-belt Asteroid          SPK-ID: 2146444
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3083311543786355 3.8224e-08  
a 2.643032873051219 8.4689e-09 au
q 1.828103496242655 1.0091e-07 au
i 10.60970149770101 4.9564e-06 deg
node 330.5539159647479 2.2827e-05 deg
peri 68.41412460943499 2.51e-05 deg
M 122.3044558566531 7.3076e-06 deg
tp 2458467.297652248249
(2018-Dec-14.79765225)		 3.108e-05 TDB
period 1569.467308824861
4.30		 7.5435e-06
2.065e-08		 d
yr
n .2293771893022417 1.1025e-09 deg/d
Q 3.457962249859783 1.108e-08 au
   Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      8118 days (22.23 yr)  
   first obs. used      1998-01-26  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48315  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 23:54:53  

Additional Information
 Earth MOID = .865522 au 
 Jupiter MOID = 2.1436 au 
 T_jup = 3.301 
[ 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 15.4   n/a MPO469553  

146444 (2001 RB)          Discovered 2001-Sep-02 by Hug, G. at Eskridge
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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