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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06499172152434753 6.1374e-08  
a 2.990277986129337 2.5443e-08 au
q 2.795934671974432 1.8533e-07 au
i .7458014511605686 4.9015e-06 deg
node 279.644113503354 0.0005425 deg
peri 246.3535830437566 0.00054486 deg
M 288.0964246975968 4.5526e-05 deg
tp 2457777.736543740362
(2017-Jan-24.23654374)
0.0002403 JED
period 1888.712142273564
5.17
2.4105e-05
6.6e-08
d
yr
n .1906060706353298 2.4327e-09 deg/d
Q 3.184621300284242 2.7097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      13566 days (37.14 yr)  
   first obs. used      1978-10-27  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50088  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:11:12  

Additional Information
 Earth MOID = 1.80297 au 
 Jupiter MOID = 1.79114 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 13.8 mag n/a MPO319205  

9591 (1991 FH2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla
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 2016-Feb-13 23:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin