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190387 (1999 RL209)
Classification: Main-belt Asteroid          SPK-ID: 2190387
[ 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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2057557162123125 4.8378e-08  
a 2.769597230528697 2.1138e-08 au
q 2.199736768741628 1.3814e-07 au
i 6.931346884325073 5.3494e-06 deg
node 264.3381346553225 4.7725e-05 deg
peri 63.59325091925231 4.962e-05 deg
M 246.5635951823212 1.6754e-05 deg
tp 2459730.985239402458
(2022-May-31.48523940)		 8.1919e-05 TDB
period 1683.539658117954
4.61		 1.9273e-05
5.277e-08		 d
yr
n .2138351765365882 2.448e-09 deg/d
Q 3.339457692315766 2.5487e-08 au
   Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      7827 days (21.43 yr)  
   first obs. used      1999-09-08  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51614  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:25  

Additional Information
 Earth MOID = 1.19682 au 
 Jupiter MOID = 2.04958 au 
 T_jup = 3.296 
[ 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 15.68   n/a E2021B55  

190387 (1999 RL209)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

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