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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1280363273447611 5.6011e-08  
a 2.193578418526539 1.3288e-08 AU
q 1.912720694075672 1.2624e-07 AU
i 5.393105563470686 5.7129e-06 deg
node 76.19911412397757 6.8907e-05 deg
peri 308.6748892005029 7.3897e-05 deg
M 65.27697483750345 2.8436e-05 deg
tp 2456785.328031709638
(2014-May-07.82803171)
9.3109e-05 JED
period 1186.665110896445
3.25
1.0783e-05
2.952e-08
d
yr
n .3033711842493157 2.7566e-09 deg/d
Q 2.474436142977406 1.4989e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      13183 days (36.09 yr)  
   first obs. used      1978-11-29  
   last obs. used      2015-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5751  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:24:10  

Additional Information
 Earth MOID = .9223 AU 
 T_jup = 3.654 
[ 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 2015-Jan-27 20:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin