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 ]  
268047 (2004 QM21)
Classification: Main-belt Asteroid          SPK-ID: 2268047
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723381076964841 5.775e-08  
a 2.589775201985817 2.2734e-08 au
q 2.143458244316302 1.5369e-07 au
i 4.840128985213884 5.7369e-06 deg
node 150.1232278191771 7.1709e-05 deg
peri 137.4746482806867 7.3311e-05 deg
M 221.0569516415218 1.7553e-05 deg
tp 2459188.024323426533
(2020-Dec-04.52432343)
7.7916e-05 TDB
period 1522.269440122339
4.17
2.0045e-05
5.488e-08
d
yr
n .2364890146983888 3.114e-09 deg/d
Q 3.036092159655333 2.6652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      227  
   data-arc span      5278 days (14.45 yr)  
   first obs. used      2004-08-23  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57203  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:47:51  

Additional Information
 Earth MOID = 1.12954 au 
 Jupiter MOID = 2.14441 au 
 T_jup = 3.394 
[ 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 MPO433740  

268047 (2004 QM21)          Discovered 2004-Aug-23 by Spacewatch at Kitt Peak
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-22 03:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin