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 ]  
58557 (1997 KE3)
Classification: Main-belt Asteroid          SPK-ID: 2058557
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090046443724627 4.9416e-08  
a 2.694777255572775 1.8803e-08 au
q 2.131556293608786 1.3258e-07 au
i 12.43003173320362 6.4875e-06 deg
node 221.0016641155494 2.5255e-05 deg
peri 144.3423981948505 3.0227e-05 deg
M 239.8565433367422 1.9554e-05 deg
tp 2459139.737838009581
(2020-Oct-17.23783801)		 9.1603e-05 TDB
period 1615.781891705937
4.42		 1.6911e-05
4.63e-08		 d
yr
n .2228023484159196 2.3319e-09 deg/d
Q 3.257998217536763 2.2732e-08 au
   Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      8013 days (21.94 yr)  
   first obs. used      1997-05-30  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54852  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:13:17  

Additional Information
 Earth MOID = 1.14361 au 
 Jupiter MOID = 2.26596 au 
 T_jup = 3.305 
[ 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 15.3   n/a MPO432139  

58557 (1997 KE3)          Discovered 1997-May-30 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 KE3 = 1998 UR21 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-25 17:09 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin