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
JPL Small-Body Database Browser
Search: [ help ]  
249138 (2008 AK4)
Classification: Main-belt Asteroid          SPK-ID: 2249138
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05216439547065259 4.2056e-08  
a 2.723378504403832 2.3674e-08 au
q 2.581315111083836 1.2261e-07 au
i 12.18097982568705 8.4417e-06 deg
node 302.3131746649139 2.4873e-05 deg
peri 113.9413480364132 9.5443e-05 deg
M 335.2613894285211 9.2387e-05 deg
tp 2459113.306269690980
(2020-Sep-20.80626969)
0.00042166 TDB
period 1641.573885947032
4.49
2.1405e-05
5.86e-08
d
yr
n .2193017341965782 2.8595e-09 deg/d
Q 2.865441897723828 2.4908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      7538 days (20.64 yr)  
   first obs. used      1999-01-07  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56566  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:30  

Additional Information
 Earth MOID = 1.62169 au 
 Jupiter MOID = 2.32836 au 
 T_jup = 3.323 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO437157  
diameter diameter 4.525 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249138 (2008 AK4)          Discovered 2008-Jan-09 by LUSS at Lulin
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 AK4 = 2006 UU186 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-12 10:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin