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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07284860785215233 3.9875e-08  
a 2.886992850844225 1.3598e-08 au
q 2.676679440781106 1.1766e-07 au
i 3.234512553097429 3.6843e-06 deg
node 63.88115623978679 7.9337e-05 deg
peri 306.838512946101 8.3546e-05 deg
M 180.0152336876593 2.7874e-05 deg
tp 2460292.277680573771
(2023-Dec-13.77768057)
0.00014081 TDB
period 1791.706996173969
4.91
1.2659e-05
3.466e-08
d
yr
n .2009257098223917 1.4196e-09 deg/d
Q 3.097306260907343 1.4589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1640  
   data-arc span      11078 days (30.33 yr)  
   first obs. used      1991-02-07  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51481  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:38:00  

Additional Information
 Earth MOID = 1.67714 au 
 Jupiter MOID = 2.27576 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 14.15   n/a MPCxxxxx  
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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