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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06474171108046929 6.9007e-08  
a 2.991148170951872 2.8026e-08 AU
q 2.797496120269231 2.0348e-07 AU
i .7456368709249672 5.0527e-06 deg
node 279.6600825013925 0.00059732 deg
peri 246.1295269851116 0.00059983 deg
M 212.0634134819628 4.7677e-05 deg
tp 2457776.976667695106
(2017-Jan-23.47666770)
0.00025382 JED
period 1889.536638295735
5.17
2.6556e-05
7.271e-08
d
yr
n .1905229000082801 2.6777e-09 deg/d
Q 3.184800221634512 2.984e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      13151 days (36.01 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51958  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:10:03  

Additional Information
 Earth MOID = 1.80542 AU 
 T_jup = 3.253 
[ 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-Dec-20 11:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin