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JPL Small-Body Database Browser
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249609 (1999 RL161)
Classification: Main-belt Asteroid          SPK-ID: 2249609
[ 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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454816381671955 6.4473e-08  
a 2.352783915565036 1.5492e-08 au
q 2.010497057275206 1.5587e-07 au
i 6.970854303624896 6.1281e-06 deg
node 194.1609688878477 4.5239e-05 deg
peri 149.0722400568818 4.8123e-05 deg
M 157.3981098738325 1.791e-05 deg
tp 2458024.173614916799
(2017-Sep-27.67361492)		 6.3833e-05 TDB
period 1318.170204180105
3.61		 1.3019e-05
3.564e-08		 d
yr
n .2731058545083093 2.6974e-09 deg/d
Q 2.695070773854866 1.7746e-08 au
   Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      7113 days (19.47 yr)  
   first obs. used      1999-08-22  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58279  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:51  

Additional Information
 Earth MOID = 1.00604 au 
 Jupiter MOID = 2.72148 au 
 T_jup = 3.532 
[ 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 16.8   n/a MPO427417  

249609 (1999 RL161)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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