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21932 Rios (1999 VP65)
Classification: Main-belt Asteroid          SPK-ID: 2021932
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07263436997736532 4.1462e-08  
a 2.887533552566072 1.5554e-08 au
q 2.677799372186932 1.2424e-07 au
i 3.234391048970361 4.3255e-06 deg
node 63.88710789132355 8.0545e-05 deg
peri 306.8275980079911 8.5842e-05 deg
M 140.6531477216952 2.9923e-05 deg
tp 2458500.277694668360
(2019-Jan-16.77769467)
0.00014868 TDB
period 1792.210369995922
4.91
1.4481e-05
3.965e-08
d
yr
n .2008692763008726 1.623e-09 deg/d
Q 3.097267732945212 1.6683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1434  
   data-arc span      10939 days (29.95 yr)  
   first obs. used      1991-02-07  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52356  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:55:09  

Additional Information
 Earth MOID = 1.67755 au 
 Jupiter MOID = 2.27573 au 
 T_jup = 3.286 
[ 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 14.13   n/a E2021B10  
diameter diameter 3.826 km 0.758 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.303   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21932 Rios           Discovered 1999 Nov. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Roberto Andres Rios (b. 1990) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his physical science project. He attends the Southwestern Educational Society, Mayaguez, Puerto Rico.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

Alternate Designations
 1999 VP65 = 1996 KB3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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