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JPL Small-Body Database Browser
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20611 (1999 RL235)
Classification: Main-belt Asteroid          SPK-ID: 2020611
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048864158670454 4.1754e-08  
a 2.48776119943552 1.0162e-08 au
q 2.226828843693626 1.0353e-07 au
i 6.720490113729731 3.4714e-06 deg
node 120.9876673843713 3.6487e-05 deg
peri 37.87955212451723 4.0436e-05 deg
M 305.8980554152835 1.8521e-05 deg
tp 2459215.888165030745
(2021-Jan-01.38816503)
7.4229e-05 TDB
period 1433.215386364741
3.92
8.7815e-06
2.404e-08
d
yr
n .251183460228624 1.539e-09 deg/d
Q 2.748693555177413 1.1228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1570  
   data-arc span      8994 days (24.62 yr)  
   first obs. used      1995-08-31  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48758  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:14:27  

Additional Information
 Earth MOID = 1.2408 au 
 Jupiter MOID = 2.24349 au 
 T_jup = 3.457 
[ 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 14.3   n/a MPO358827  
diameter diameter 3.320 km 0.873 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.254   0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20611 (1999 RL235)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RL235 = 1999 TV230 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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