Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08786114118295696 6.0937e-08  
a 2.281699658372036 1.4582e-08 AU
q 2.081226922550706 1.4172e-07 AU
i 6.392801591183995 7.1661e-06 deg
node 186.83314772359 5.0796e-05 deg
peri 75.03171963466919 6.7073e-05 deg
M 279.8033499733377 4.2565e-05 deg
tp 2457280.939942559425
(2015-Sep-15.43994256)
0.0001484 JED
period 1258.88524380792
3.45
1.2068e-05
3.304e-08
d
yr
n .2859672887348013 2.7414e-09 deg/d
Q 2.482172394193367 1.5863e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      708  
   data-arc span      8777 days (24.03 yr)  
   first obs. used      1991-05-13  
   last obs. used      2015-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61088  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:34:31  

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 15.1 mag n/a MPO337462  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Aug-01 13:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin