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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104816950513572 4.1016e-08  
a 2.487734001507805 9.081e-09 au
q 2.226977309780831 1.0089e-07 au
i 6.72054152618684 3.3431e-06 deg
node 120.9873458300746 3.5104e-05 deg
peri 37.83088131616717 3.8789e-05 deg
M 356.1719149294894 1.6834e-05 deg
tp 2459215.739945696598
(2021-Jan-01.23994570)
6.7035e-05 TDB
period 1433.191883074748
3.92
7.8474e-06
2.149e-08
d
yr
n .2511875794521398 1.3754e-09 deg/d
Q 2.748490693234779 1.0033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1788  
   data-arc span      9337 days (25.56 yr)  
   first obs. used      1995-08-31  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:05:31  

Additional Information
 Earth MOID = 1.24074 au 
 Jupiter MOID = 2.24285 au 
 T_jup = 3.457 
[ 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 14.33   n/a MPCxxxxx  
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

Alternate Designations
 1999 RL235 = 1999 TV230 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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