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 ]  
442431 (2011 UJ142)
Classification: Main-belt Asteroid          SPK-ID: 2442431
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1369458817210732 1.1181e-07  
a 2.714612331759172 4.9609e-08 au
q 2.342857352455514 2.9067e-07 au
i 3.224997682598826 1.4208e-05 deg
node 121.0788189292497 0.00013921 deg
peri 309.7691759590504 0.00016317 deg
M 216.8579930704306 8.0162e-05 deg
tp 2459250.068198401376
(2021-Feb-04.56819840)
0.00037452 TDB
period 1633.654274105256
4.47
4.4782e-05
1.226e-07
d
yr
n .2203648628147899 6.0407e-09 deg/d
Q 3.086367311062831 5.6403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      89  
   data-arc span      6110 days (16.73 yr)  
   first obs. used      2002-10-11  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59498  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:10  

Additional Information
 Earth MOID = 1.35879 au 
 Jupiter MOID = 2.17977 au 
 T_jup = 3.346 
[ 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 17.2   n/a MPO446755  

442431 (2011 UJ142)          Discovered 2007-Dec-04 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
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