Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
172072 (2002 AF81)
Classification: Main-belt Asteroid          SPK-ID: 2172072
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1083777292865318 4.6798e-08  
a 3.078529205409051 2.8202e-08 au
q 2.744885200584547 1.4675e-07 au
i 8.635510640306563 5.4648e-06 deg
node 138.4510719373677 3.9582e-05 deg
peri 314.9605229091771 5.1106e-05 deg
M 146.3366610782556 2.9566e-05 deg
tp 2458198.519174743715
(2018-Mar-21.01917474)
0.0001627 TDB
period 1972.937573981335
5.40
2.7111e-05
7.423e-08
d
yr
n .1824690272756729 2.5074e-09 deg/d
Q 3.412173210233555 3.1258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      395  
   data-arc span      6771 days (18.54 yr)  
   first obs. used      2000-09-26  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55642  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:43:20  

Additional Information
 Earth MOID = 1.76982 au 
 Jupiter MOID = 1.75323 au 
 T_jup = 3.202 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO469843  
diameter diameter 5.712 km 1.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172072 (2002 AF81)          Discovered 2002-Jan-09 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2002 AF81 = 2003 FG63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-31 14:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin