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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048864171500888 4.3056e-08  
a 2.487761203399086 1.0415e-08 au
q 2.226828844049562 1.063e-07 au
i 6.72049232845026 3.6309e-06 deg
node 120.9877039137206 3.7203e-05 deg
peri 37.87953943758627 4.1067e-05 deg
M 305.8980276634309 1.854e-05 deg
tp 2459215.888276029883
(2021-Jan-01.38827603)
7.4315e-05 TDB
period 1433.215389789896
3.92
8.9999e-06
2.464e-08
d
yr
n .2511834596283359 1.5773e-09 deg/d
Q 2.748693562748609 1.1507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      8860 days (24.26 yr)  
   first obs. used      1995-08-31  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49345  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:45:07  

Additional Information
 Earth MOID = 1.2408 au 
 Jupiter MOID = 2.24349 au 
 T_jup = 3.457 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456828.5 (2014-Jun-20.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1043361097316812 4.3276e-08  
q 2.228400738187934 1.0681e-07 au
tp 2456351.068403510787
(2013-Feb-27.56840351)
6.9618e-05 TDB
node 121.043329866577 3.7203e-05 deg
peri 38.20086038371249 4.1067e-05 deg
i 6.720156270409047 3.6313e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      8860 days (24.26 yr)  
   first obs. used      1995-08-31  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49345  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:45:07  

Additional Information
 Jupiter MOID = 2.24349 au 
 T_jup = 3.457 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.872842775294568E-15 -4.605105541538903E-15 7.488887703589291E-13 3.161785730541596E-14 2.164479435531562E-13 1.814956553982601E-15
q -4.605105541538903E-15 1.140911448657105E-14 -1.770975183036591E-12 -7.552741306771044E-14 -5.090822682866324E-13 -4.184471711990425E-15
tp 7.488887703589291E-13 -1.770975183036591E-12 4.846615327509459E-9 2.178507375926819E-11 1.234648322945138E-9 5.035288310499972E-12
node 3.161785730541596E-14 -7.552741306771044E-14 2.178507375926819E-11 1.38407273914707E-9 -1.36736282559386E-9 2.777839389815314E-11
peri 2.164479435531562E-13 -5.090822682866324E-13 1.234648322945138E-9 -1.36736282559386E-9 1.686505604737197E-9 -2.623626741178384E-11
i 1.814956553982601E-15 -4.184471711990425E-15 5.035288310499972E-12 2.777839389815314E-11 -2.623626741178384E-11 1.318623416906123E-11

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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