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JPL Small-Body Database Browser
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20719 Velasco (1999 XL99)
Classification: Main-belt Asteroid          SPK-ID: 2020719
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318469103585406 3.7263e-08  
a 2.331870609502886 9.1461e-09 au
q 2.024420674284043 8.9041e-08 au
i 1.965726948595263 4.3414e-06 deg
node 286.9636195504231 0.00011368 deg
peri 61.6480126633818 0.00011491 deg
M 242.2704122076029 1.8993e-05 deg
tp 2459025.841954672730
(2020-Jun-25.34195467)
6.9854e-05 TDB
period 1300.633991449952
3.56
7.6521e-06
2.095e-08
d
yr
n .2767880913205034 1.6284e-09 deg/d
Q 2.639320544721728 1.0352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1378  
   data-arc span      25342 days (69.38 yr)  
   first obs. used      1949-12-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51444  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:54:58  

Additional Information
 Earth MOID = 1.01776 au 
 Jupiter MOID = 2.75274 au 
 T_jup = 3.558 
[ 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 14.9   n/a MPO474038  

20719 Velasco           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Rodrigo Velasco Velasco (b. 1985) 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

Alternate Designations
 1999 XL99 = 1988 VP13 = 1991 ND3 = 1997 EP42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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