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 ]  
16840 (1997 WT44)
Classification: Main-belt Asteroid          SPK-ID: 2016840
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640715840055996 4.1903e-08  
a 2.841088883241968 1.2833e-08 au
q 2.374946929867758 1.1774e-07 au
i 1.274218590178882 4.3263e-06 deg
node 211.8385093306464 0.00016068 deg
peri 296.7789166529004 0.00016108 deg
M 275.6282741680483 1.2648e-05 deg
tp 2459806.439804857795
(2022-Aug-14.93980486)		 6.3115e-05 TDB
period 1749.14437619478
4.79		 1.1851e-05
3.245e-08		 d
yr
n .205814914365829 1.3945e-09 deg/d
Q 3.307230836616177 1.4939e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1770  
   data-arc span      13528 days (37.04 yr)  
   first obs. used      1984-01-25  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:43:59  

Additional Information
 Earth MOID = 1.38742 au 
 Jupiter MOID = 1.70184 au 
 T_jup = 3.289 
[ 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 13.96   n/a E2021B10  

16840 (1997 WT44)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WT44 = 1984 BZ1 = 1999 JO20 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-03 02:43 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin