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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08786113068416042 6.1309e-08  
a 2.281699650431548 1.6528e-08 AU
q 2.081226939262979 1.4199e-07 AU
i 6.392797210897113 7.4003e-06 deg
node 186.833206043494 5.5275e-05 deg
peri 75.03165191099346 7.1236e-05 deg
M 279.8033648287364 4.5757e-05 deg
tp 2457280.939889147602
(2015-Sep-15.43988915)
0.00016013 JED
period 1258.885237236395
3.45
1.3678e-05
3.745e-08
d
yr
n .285967290227583 3.1071e-09 deg/d
Q 2.482172361600118 1.798e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      8719 days (23.87 yr)  
   first obs. used      1991-05-13  
   last obs. used      2015-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59577  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:16:39  

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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