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 ]  
28241 (1999 AC22)
Classification: Main-belt Asteroid          SPK-ID: 2028241
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05381005303637562 5.4499e-08  
a 2.617316889743855 1.9952e-08 AU
q 2.476478929093737 1.4696e-07 AU
i 5.238261395234576 6.9193e-06 deg
node 60.05258175775968 6.0668e-05 deg
peri 40.80139888663898 8.9624e-05 deg
M 309.9485579429264 6.477e-05 deg
tp 2457215.528973818550
(2015-Jul-12.02897382)
0.00027836 JED
period 1546.617387894776
4.23
1.7685e-05
4.842e-08
d
yr
n .2327660369123515 2.6616e-09 deg/d
Q 2.758154850393974 2.1026e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      806  
   data-arc span      10125 days (27.72 yr)  
   first obs. used      1987-06-02  
   last obs. used      2015-02-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54974  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:28:33  

Additional Information
 Earth MOID = 1.49584 AU 
 T_jup = 3.399 
[ 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 MPO313639  

28241 (1999 AC22)          Discovered 1999-Jan-10 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-30 14:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin