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20693 Ramondiaz (1999 VV81)
Classification: Main-belt Asteroid          SPK-ID: 2020693
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1330757907658957 3.4654e-08  
a 3.11365156337229 1.8493e-08 au
q 2.699299919407055 1.1113e-07 au
i .2312176017839719 3.9739e-06 deg
node 258.287147124429 0.00098415 deg
peri 5.611550786071478 0.00098427 deg
M 13.63490095341244 1.5873e-05 deg
tp 2458924.493115776952
(2020-Mar-15.99311578)
8.8423e-05 TDB
period 2006.796999390675
5.49
1.7879e-05
4.895e-08
d
yr
n .1793903419774432 1.5982e-09 deg/d
Q 3.528003207337524 2.0955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1424  
   data-arc span      10828 days (29.65 yr)  
   first obs. used      1991-02-22  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:01:17  

Additional Information
 Earth MOID = 1.68358 au 
 Jupiter MOID = 1.54608 au 
 T_jup = 3.204 
[ 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 13.9   n/a MPO263532  
diameter diameter 7.658 km 0.374 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20693 Ramondiaz           Discovered 1999 Nov. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jose Ramon Diaz Navarrete (b. 1986) was awarded second place in the 2004 Intel International Science and Engineering Fair for his computer science team project. He attends the C.B.T.i.s. No. 168, Aguascalientes, Mexico.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 1999 VV81 = 1997 EK55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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