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
JPL Small-Body Database Browser
Search: [ help ]  
442479 (2011 UH321)
Classification: Main-belt Asteroid          SPK-ID: 2442479
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05205805315533626 6.575e-08  
a 2.731264989474716 3.0942e-08 au
q 2.589080651471332 1.9606e-07 au
i 10.70870854443088 5.7837e-06 deg
node 312.2952434141575 3.5399e-05 deg
peri 164.6220382650428 7.7711e-05 deg
M 252.085977585561 6.9937e-05 deg
tp 2459494.719143372776
(2021-Oct-07.21914337)
0.0003223 TDB
period 1648.709663799854
4.51
2.8017e-05
7.671e-08
d
yr
n .218352574685765 3.7105e-09 deg/d
Q 2.8734493274781 3.2553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      169  
   data-arc span      6547 days (17.92 yr)  
   first obs. used      2002-11-25  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:45:13  

Additional Information
 Earth MOID = 1.60624 au 
 Jupiter MOID = 2.18517 au 
 T_jup = 3.327 
[ 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 16.2   n/a MPO495192  

442479 (2011 UH321)          Discovered 2011-Oct-24 by CSS at Catalina
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 2020-Nov-29 18:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin