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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07284860786403319 3.9875e-08  
a 2.886992850843626 1.3598e-08 au
q 2.676679440746252 1.1766e-07 au
i 3.234512553078711 3.6843e-06 deg
node 63.8811562399516 7.9337e-05 deg
peri 306.838512944338 8.3546e-05 deg
M 180.0152336890447 2.7874e-05 deg
tp 2460292.277680566598
(2023-Dec-13.77768057)
0.00014081 TDB
period 1791.706996173412
4.91
1.2659e-05
3.466e-08
d
yr
n .2009257098224542 1.4196e-09 deg/d
Q 3.097306260941 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-Aug-25 15:03:34  

Additional Information
 Earth MOID = 1.67714 au 
 Jupiter MOID = 2.27576 au 
 T_jup = 3.286 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457094.5 (2015-Mar-13.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07070068551062728 3.9916e-08  
q 2.683039893105564 1.1743e-07 au
tp 2456694.912022571325
(2014-Feb-06.41202257)
0.00013789 TDB
node 64.03930773248754 7.9427e-05 deg
peri 304.2863670909005 8.387e-05 deg
i 3.233240128244643 3.6792e-06 deg
  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-Aug-25 15:03:34  

Additional Information
 Jupiter MOID = 2.27576 au 
 T_jup = 3.286 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.593284602837637E-15 -4.660788445995547E-15 -9.394928049390008E-13 8.028807458786603E-15 -1.968896095275215E-13 9.996445485522917E-17
q -4.660788445995547E-15 1.378947688790323E-14 3.054546176116743E-12 -2.317696993285623E-14 6.419591203005725E-13 -1.282945327507673E-16
tp -9.394928049390008E-13 3.054546176116743E-12 1.901459747410677E-8 4.602942862844904E-12 3.745358530341733E-9 9.676219209163595E-13
node 8.028807458786603E-15 -2.317696993285623E-14 4.602942862844904E-12 6.308582552596687E-9 -6.297389112451986E-9 -4.740302667330448E-11
peri -1.968896095275215E-13 6.419591203005725E-13 3.745358530341733E-9 -6.297389112451986E-9 7.034095443446523E-9 4.750880862140612E-11
i 9.996445485522917E-17 -1.282945327507673E-16 9.676219209163595E-13 -4.740302667330448E-11 4.750880862140612E-11 1.353655599134459E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.17   n/a MPO636392  
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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