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 ]  
18342 (1989 ST9)
Classification: Main-belt Asteroid          SPK-ID: 2018342
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2363902599278489 7.0012e-08  
a 2.349786070818007 2.0213e-08 au
q 1.7943195307625 1.6861e-07 au
i 2.274322013988458 7.728e-06 deg
node 19.3162152814138 0.00016325 deg
peri 315.4492900719478 0.00016388 deg
M 121.4557605172493 1.7519e-05 deg
tp 2456956.629245506087
(2014-Oct-26.12924551)
6.0416e-05 JED
period 1315.651649104898
3.60
1.6976e-05
4.648e-08
d
yr
n .2736286616939411 3.5307e-09 deg/d
Q 2.905252610873515 2.4991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      9598 days (26.28 yr)  
   first obs. used      1989-09-04  
   last obs. used      2015-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57696  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:39:29  

Additional Information
 Earth MOID = .783403 au 
 Jupiter MOID = 2.46431 au 
 T_jup = 3.519 
[ 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 15.9 mag n/a PDS3 (MPO 5165)  

18342 (1989 ST9)          Discovered 1989-Sep-26 by Debehogne, H. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 ST9 = 1999 FM14 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-11 21:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin