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19685 (1999 RB197)
Classification: Main-belt Asteroid          SPK-ID: 2019685
[ 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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08110163331214097 4.7197e-08  
a 2.968229070717797 1.7884e-08 au
q 2.727500845038005 1.3817e-07 au
i 12.32421020962351 5.5179e-06 deg
node 322.2011488403835 1.5613e-05 deg
peri 215.7111652512665 3.0483e-05 deg
M 191.9494497628598 2.7559e-05 deg
tp 2459872.430734407111
(2022-Oct-19.93073441)		 0.00014512 TDB
period 1867.860973639271
5.11		 1.6881e-05
4.622e-08		 d
yr
n .1927338303442302 1.7419e-09 deg/d
Q 3.208957296397589 1.9335e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1822  
   data-arc span      17823 days (48.80 yr)  
   first obs. used      1971-02-18  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5054  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:38:47  

Additional Information
 Earth MOID = 1.74341 au 
 Jupiter MOID = 1.82678 au 
 T_jup = 3.224 
[ 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 12.8   n/a MPO319331  

19685 (1999 RB197)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RB197 = 1971 DG = 1981 AQ3 = 1989 SU12 = 2000 AR228 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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