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 ]  
441464 (2008 QE21)
Classification: Main-belt Asteroid          SPK-ID: 2441464
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581352149525485 1.1114e-07  
a 2.326529993063903 4.8986e-08 au
q 1.958623672517192 2.7547e-07 au
i 6.20503967204312 6.9571e-06 deg
node 238.5222961187353 0.00011018 deg
peri 115.2615290941456 0.00011627 deg
M 348.7050109817799 4.3095e-05 deg
tp 2458641.167242242040
(2019-Jun-06.66724224)
0.00015602 TDB
period 1296.168343636117
3.55
4.0937e-05
1.121e-07
d
yr
n .277741700580419 8.7719e-09 deg/d
Q 2.694436313610615 5.6732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      93  
   data-arc span      6090 days (16.67 yr)  
   first obs. used      2001-09-15  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56667  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 17:30:10  

Additional Information
 Earth MOID = .962858 au 
 Jupiter MOID = 2.77069 au 
 T_jup = 3.549 
[ 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 17.5   n/a MPO450444  

441464 (2008 QE21)          Discovered 2008-Aug-26 by LINEAR at Socorro
Reference: Last Updated: 2015-09-02

Alternate Designations
 2008 QE21 = 2012 WB32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin