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 ]  
16640 (1993 QU9)
Classification: Main-belt Asteroid          SPK-ID: 2016640
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494627318529345 2.9449e-08  
a 2.348259251229092 1.0904e-08 au
q 1.997282008441466 7.0136e-08 au
i 7.285290601733671 3.5447e-06 deg
node 146.871710179535 3.4204e-05 deg
peri 152.8148875811062 3.7402e-05 deg
M 244.1428564754378 1.5746e-05 deg
tp 2459623.497504997942
(2022-Feb-12.99750500)
5.847e-05 TDB
period 1314.3695517314
3.60
9.1551e-06
2.507e-08
d
yr
n .2738955718547932 1.9078e-09 deg/d
Q 2.699236494016719 1.2534e-08 au
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      10066 days (27.56 yr)  
   first obs. used      1993-08-15  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:37:35  

Additional Information
 Earth MOID = .983059 au 
 Jupiter MOID = 2.52493 au 
 T_jup = 3.534 
[ 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 15.90   n/a E2021B10  

16640 (1993 QU9)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 QU9 = 1996 LB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-15 06:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin