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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08101238250924694 2.3459e-08  
a 2.968688398490516 1.5755e-08 au
q 2.728187878401239 7.2395e-08 au
i 12.3240657649375 8.3419e-07 deg
node 322.2000785200581 7.6792e-06 deg
peri 215.5908750638221 2.0028e-05 deg
M 230.6265045853887 2.0544e-05 deg
tp 2459871.910549963040
(2022-Oct-19.41054996)		 0.0001091 TDB
period 1868.294562283244
5.12		 1.4873e-05
4.072e-08		 d
yr
n .1926891012089891 1.534e-09 deg/d
Q 3.209188918579794 1.7032e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2318  
   data-arc span      18269 days (50.02 yr)  
   first obs. used      1971-02-18  
   last obs. used      2021-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47086  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:23:07  

Additional Information
 Earth MOID = 1.74372 au 
 Jupiter MOID = 1.82561 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 12.90   n/a E2021B10  

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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