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 ]  
16793 (1997 AA18)
Classification: Main-belt Asteroid          SPK-ID: 2016793
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08165973018630938 2.0142e-08  
a 3.045299051130511 1.5452e-08 au
q 2.79662075227857 6.5023e-08 au
i 11.12121396747702 8.4759e-07 deg
node 109.3169641636802 2.7866e-06 deg
peri 299.8726393876637 1.2417e-05 deg
M 261.8883639013274 1.2765e-05 deg
tp 2459729.506934321237
(2022-May-30.00693432)
7.0002e-05 TDB
period 1941.079610211717
5.31
1.4774e-05
4.045e-08
d
yr
n .1854637996845138 1.4116e-09 deg/d
Q 3.293977349982453 1.6714e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1891  
   data-arc span      8700 days (23.82 yr)  
   first obs. used      1997-01-15  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50206  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:41:43  

Additional Information
 Earth MOID = 1.82754 au 
 Jupiter MOID = 2.01058 au 
 T_jup = 3.205 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.83   n/a E2021B10  

16793 (1997 AA18)          Discovered 1997-Jan-15 by Kobayashi, T. at Oizumi
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AA18 = 1998 HA119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 07:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin