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 ]  
31411 (1999 AU9)
Classification: Main-belt Asteroid          SPK-ID: 2031411
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 .1279346252952735 7.0021e-08  
a 2.193140663667794 1.848e-08 AU
q 1.912562034641627 1.6312e-07 AU
i 5.393586192767114 5.7753e-06 deg
node 76.19995596712715 7.5988e-05 deg
peri 308.59641129248 8.0803e-05 deg
M 4.665054888241004 3.1334e-05 deg
tp 2456785.127219892200
(2014-May-07.62721989)
0.00010316 JED
period 1186.30990875536
3.25
1.4995e-05
4.105e-08
d
yr
n .3034620189404815 3.8357e-09 deg/d
Q 2.473719292693961 2.0845e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      12702 days (34.78 yr)  
   first obs. used      1978-11-29  
   last obs. used      2013-09-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58493  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:50:46  

Additional Information
 Earth MOID = .920983 AU 
 T_jup = 3.655 
[ 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 14.8 mag n/a MPO231628  

31411 (1999 AU9)          Discovered 1999-Jan-10 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AU9 = 1978 WO6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-22 21:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin