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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048864146674225 4.1834e-08  
a 2.487761199236389 1.0176e-08 au
q 2.226828846499757 1.037e-07 au
i 6.720490153432424 3.4774e-06 deg
node 120.9876677410681 3.6547e-05 deg
peri 37.87955153632799 4.0487e-05 deg
M 305.8980557536446 1.8528e-05 deg
tp 2459215.888163657817
(2021-Jan-01.38816366)
7.4256e-05 TDB
period 1433.215386192661
3.92
8.7935e-06
2.408e-08
d
yr
n .2511834602587826 1.5411e-09 deg/d
Q 2.748693551973021 1.1243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1548  
   data-arc span      8918 days (24.42 yr)  
   first obs. used      1995-08-31  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48819  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:09:54  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1932-Jan-30 14:15 00:01 Iris 0.0308912263002535 0.030887271161815 0.0308951854336931 6.78281773303759 6.78281770560115 2426737.093488077 1.08755110774434 608.972889559676 54.3188226352081 -71.7775799645778 80827.8778579047 T 24 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
1994-Oct-01 20:16 < 00:01 Iris 0.0318461705898696 0.0318425635364746 0.0318497778937427 6.73729878399817 6.73729875720464 2449627.344376198 0.524585735917459 232.643745499079 53.8289750378955 -40.6963064948899 59748.4168453029 T 24 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10

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