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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
100649 (1997 WF4)
Classification: Main-belt Asteroid          SPK-ID: 2100649
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08259960625257139 3.8732e-08  
a 2.648338350375182 1.8535e-08 au
q 2.429586645410608 1.0194e-07 au
i 2.129753296141879 5.1789e-06 deg
node 221.5983558139828 0.00014866 deg
peri 218.2236441976138 0.00015499 deg
M 51.37547630933221 4.3775e-05 deg
tp 2458775.847119367378
(2019-Oct-19.34711937)
0.0001906 TDB
period 1574.195371752754
4.31
1.6526e-05
4.525e-08
d
yr
n .2286882597038548 2.4007e-09 deg/d
Q 2.867090055339756 2.0065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      8109 days (22.20 yr)  
   first obs. used      1997-10-23  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5586  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:57:57  

Additional Information
 Earth MOID = 1.44561 au 
 Jupiter MOID = 2.30869 au 
 T_jup = 3.386 
[ 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 16.6   n/a MPO412741  

100649 (1997 WF4)          Discovered 1997-Nov-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 WF4 = 2003 BZ32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-04 15:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin