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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639594213801024 4.1896e-08  
a 2.840991083904924 1.2912e-08 au
q 2.375183829641843 1.1768e-07 au
i 1.274233004260412 4.3264e-06 deg
node 211.838748735728 0.00016069 deg
peri 296.8022876716726 0.00016109 deg
M 235.2480282124715 1.2496e-05 deg
tp 2459806.605396620315
(2022-Aug-15.10539662)		 6.3144e-05 TDB
period 1749.054060283211
4.79		 1.1924e-05
3.265e-08		 d
yr
n .2058255420313926 1.4032e-09 deg/d
Q 3.306798338168005 1.5029e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1769  
   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      .50398  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:44:00  

Additional Information
 Earth MOID = 1.38677 au 
 Jupiter MOID = 1.70269 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-Apr-15 06:16 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin