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 ]  
43797 (1991 AF2)
Classification: Main-belt Asteroid          SPK-ID: 2043797
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605736820628983 7.4536e-08  
a 2.62211409995375 2.6844e-08 AU
q 2.201071584135133 1.9144e-07 AU
i 12.23473275446163 9.9252e-06 deg
node 184.8751691519714 3.3936e-05 deg
peri 246.0414253072591 4.5978e-05 deg
M 189.9660232489975 2.9247e-05 deg
tp 2457533.002341209866
(2016-May-24.50234121)
0.00012764 JED
period 1550.871466246506
4.25
2.3815e-05
6.52e-08
d
yr
n .2321275539818198 3.5646e-09 deg/d
Q 3.043156615772366 3.1154e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      517  
   data-arc span      8259 days (22.61 yr)  
   first obs. used      1990-11-20  
   last obs. used      2013-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59821  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-06 02:49:53  

Additional Information
 Earth MOID = 1.24502 AU 
 T_jup = 3.354 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO266162  

43797 (1991 AF2)          Discovered 1991-Jan-07 by McNaught, R. H. at Siding Spring (413)
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 AF2 = 1998 QW51 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-24 12:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin