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 ]  
9591 (1991 FH2)
Classification: Main-belt Asteroid          SPK-ID: 2009591
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0645515939557635 6.9662e-08  
a 2.991723080643847 3.2603e-08 AU
q 2.798602587114039 2.0391e-07 AU
i .7456526750205962 5.8249e-06 deg
node 279.6712935031268 0.00060435 deg
peri 246.0542067504983 0.00060827 deg
M 174.0321711899672 5.6558e-05 deg
tp 2455886.791736954478
(2011-Nov-21.29173695)
0.0002982 JED
period 1890.081428320137
5.17
3.0896e-05
8.459e-08
d
yr
n .1904679843978786 3.1135e-09 deg/d
Q 3.184843574173654 3.4707e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      835  
   data-arc span      13029 days (35.67 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5259  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:22:08  

Additional Information
 Earth MOID = 1.806 AU 
 T_jup = 3.252 
[ 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 13.7 mag n/a PDS3 (MPC 32887)  

9591 (1991 FH2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla (809)
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 FH2 = 1978 UR5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-01 07:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin