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24138 Benjaminlu (1999 VB81)
Classification: Main-belt Asteroid          SPK-ID: 2024138
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08786112774809955 6.1866e-08  
a 2.281699647453014 1.8468e-08 AU
q 2.081226943245351 1.4245e-07 AU
i 6.392797229741109 7.4096e-06 deg
node 186.8332057577579 5.8072e-05 deg
peri 75.03164810457602 7.422e-05 deg
M 279.8033708328077 4.8668e-05 deg
tp 2457280.939867602815
(2015-Sep-15.43986760)
0.00017082 JED
period 1258.885234771369
3.45
1.5284e-05
4.185e-08
d
yr
n .2859672907875364 3.472e-09 deg/d
Q 2.482172351660677 2.0091e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      8678 days (23.76 yr)  
   first obs. used      1991-05-13  
   last obs. used      2015-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60294  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:14:25  

Additional Information
 Earth MOID = 1.0787 AU 
 T_jup = 3.592 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO244394  

24138 Benjaminlu           Discovered 1999 Nov. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro.
Benjamin Brice Lu (b. 1990) is a finalist in the 2008 Intel Science Talent Search (STS), a science competition for high school seniors, for his zoology project. He attends the Richard Montgomery High School, Rockville, Maryland.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080221/MPCPages.arcLast Updated: 2008-03-05

[ show close-approach data ]
Alternate Designations
 1999 VB81 = 1991 JN4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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