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 ]  
21410 Cahill (1998 FH65)
Classification: Main-belt Asteroid          SPK-ID: 2021410
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296210927776144 4.3773e-08  
a 2.279936486333713 1.1459e-08 au
q 1.984408627511583 1.0254e-07 au
i 1.749916848117708 5.4789e-06 deg
node 220.8035222517904 0.00015466 deg
peri 46.79152500016961 0.00015634 deg
M 359.3937967760215 2.5368e-05 deg
tp 2457402.617377486214
(2016-Jan-15.11737749)
8.8612e-05 JED
period 1257.426329794605
3.44
9.4794e-06
2.595e-08
d
yr
n .2862990788961803 2.1583e-09 deg/d
Q 2.575464345155844 1.2944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      8854 days (24.24 yr)  
   first obs. used      1991-03-11  
   last obs. used      2015-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5375  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:29:01  

Additional Information
 Earth MOID = .967515 au 
 Jupiter MOID = 2.48888 au 
 T_jup = 3.594 
[ 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 14.9 mag n/a MPO324507  

21410 Cahill           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
James Andrew Cahill (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his earth and planetary science project. He attends the Flagstaff High School, Flagstaff, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

[ show close-approach data ]
Alternate Designations
 1998 FH65 = 1991 EM3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-08 23:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin